Manifest Checks: Models

Note

The below checks require manifest.json to be present.

Classes:

Name	Description
CheckModelAccess	Models must have the specified access attribute. Requires dbt 1.7+.
CheckModelCodeDoesNotContainRegexpPattern	The raw code for a model must not match the specified regexp pattern.
CheckModelContractsEnforcedForPublicModel	Public models must have contracts enforced.
CheckModelDependsOnMultipleSources	Models cannot reference more than one source.
CheckModelDescriptionContainsRegexPattern	Models must have a description that matches the provided pattern.
CheckModelDescriptionPopulated	Models must have a populated description.
CheckModelDirectories	Only specified sub-directories are permitted.
CheckModelDocumentedInSameDirectory	Models must be documented in the same directory where they are defined (i.e. .yml and .sql files are in the same directory).
CheckModelGrantPrivilege	Model can have grant privileges that match the specified pattern.
CheckModelGrantPrivilegeRequired	Model must have the specified grant privilege.
CheckModelHasContractsEnforced	Model must have contracts enforced.
CheckModelHasMetaKeys	The meta config for models must have the specified keys.
CheckModelHasNoUpstreamDependencies	Identify if models have no upstream dependencies as this likely indicates hard-coded tables references.
CheckModelHasSemiColon	Model may not end with a semi-colon (;).
CheckModelHasTags	Models must have the specified tags.
CheckModelHasUniqueTest	Models must have a test for uniqueness of a column.
CheckModelHasUnitTests	Models must have more than the specified number of unit tests.
CheckModelLatestVersionSpecified	Check that the latest_version attribute of the model is set.
CheckModelMaxChainedViews	Models cannot have more than the specified number of upstream dependents that are not tables.
CheckModelMaxFanout	Models cannot have more than the specified number of downstream models.
CheckModelMaxNumberOfLines	Models may not have more than the specified number of lines.
CheckModelMaxUpstreamDependencies	Limit the number of upstream dependencies a model has.
CheckModelNames	Models must have a name that matches the supplied regex.
CheckModelNumberOfGrants	Model can have the specified number of privileges.
CheckModelPropertyFileLocation	Model properties files must follow the guidance provided by dbt here.
CheckModelSchemaName	Models must have a schema name that matches the supplied regex.
CheckModelVersionAllowed	Check that the version of the model matches the supplied regex pattern.
CheckModelVersionPinnedInRef	Check that the version of the model is always specified in downstream nodes.
CheckModelsDocumentationCoverage	Set the minimum percentage of models that have a populated description.
CheckModelsTestCoverage	Set the minimum percentage of models that have at least one test.

CheckModelAccess

Models must have the specified access attribute. Requires dbt 1.7+.

Parameters:

Name	Type	Description	Default
access	Literal['private', 'protected', 'public']	The access level to check for.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    # Align with dbt best practices that marts should be `public`, everything else should be `protected`
    - name: check_model_access
      access: protected
      include: ^models/intermediate
    - name: check_model_access
      access: public
      include: ^models/marts
    - name: check_model_access
      access: protected
      include: ^models/staging

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelAccess(BaseCheck):
    """Models must have the specified access attribute. Requires dbt 1.7+.

    Parameters:
        access (Literal["private", "protected", "public"]): The access level to check for.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            # Align with dbt best practices that marts should be `public`, everything else should be `protected`
            - name: check_model_access
              access: protected
              include: ^models/intermediate
            - name: check_model_access
              access: public
              include: ^models/marts
            - name: check_model_access
              access: protected
              include: ^models/staging
        ```

    """

    access: Literal["private", "protected", "public"]
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_access"]

    def execute(self) -> None:
        """Execute the check."""
        assert self.model.access.value == self.access, (
            f"`{get_clean_model_name(self.model.unique_id)}` has `{self.model.access.value}` access, it should have access `{self.access}`."
        )

CheckModelCodeDoesNotContainRegexpPattern

The raw code for a model must not match the specified regexp pattern.

Parameters:

Name	Type	Description	Default
regexp_pattern	str	The regexp pattern that should not be matched by the model code.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    # Prefer `coalesce` over `ifnull`: https://docs.sqlfluff.com/en/stable/rules.html#sqlfluff.rules.sphinx.Rule_CV02
    - name: check_model_code_does_not_contain_regexp_pattern
      regexp_pattern: .*[i][f][n][u][l][l].*

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelCodeDoesNotContainRegexpPattern(BaseCheck):
    """The raw code for a model must not match the specified regexp pattern.

    Parameters:
        regexp_pattern (str): The regexp pattern that should not be matched by the model code.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            # Prefer `coalesce` over `ifnull`: https://docs.sqlfluff.com/en/stable/rules.html#sqlfluff.rules.sphinx.Rule_CV02
            - name: check_model_code_does_not_contain_regexp_pattern
              regexp_pattern: .*[i][f][n][u][l][l].*
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_code_does_not_contain_regexp_pattern"]
    regexp_pattern: str

    def execute(self) -> None:
        """Execute the check."""
        assert (
            re.compile(self.regexp_pattern.strip(), flags=re.DOTALL).match(
                self.model.raw_code
            )
            is None
        ), (
            f"`{get_clean_model_name(self.model.unique_id)}` contains a banned string: `{self.regexp_pattern.strip()}`."
        )

CheckModelContractsEnforcedForPublicModel

Public models must have contracts enforced.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_contract_enforced_for_public_model

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelContractsEnforcedForPublicModel(BaseCheck):
    """Public models must have contracts enforced.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_contract_enforced_for_public_model
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_contract_enforced_for_public_model"]

    def execute(self) -> None:
        """Execute the check."""
        if self.model.access.value == "public":
            assert self.model.contract.enforced is True, (
                f"`{get_clean_model_name(self.model.unique_id)}` is a public model but does not have contracts enforced."
            )

CheckModelDependsOnMultipleSources

Models cannot reference more than one source.

Parameters:

Name	Type	Description	Default
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_depends_on_multiple_sources

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelDependsOnMultipleSources(BaseCheck):
    """Models cannot reference more than one source.

    Parameters:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_depends_on_multiple_sources
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_depends_on_multiple_sources"]

    def execute(self) -> None:
        """Execute the check."""
        num_reffed_sources = sum(
            x.split(".")[0] == "source" for x in self.model.depends_on.nodes
        )
        assert num_reffed_sources <= 1, (
            f"`{get_clean_model_name(self.model.unique_id)}` references more than one source."
        )

CheckModelDescriptionContainsRegexPattern

Models must have a description that matches the provided pattern.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.
regexp_pattern	str	The regexp pattern that should match the model description.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_description_contains_regex_pattern
    - regex_pattern: .*pattern_to_match.*

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelDescriptionContainsRegexPattern(BaseCheck):
    """Models must have a description that matches the provided pattern.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        regexp_pattern (str): The regexp pattern that should match the model description.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_description_contains_regex_pattern
            - regex_pattern: .*pattern_to_match.*
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_description_contains_regex_pattern"]
    regexp_pattern: str

    def execute(self) -> None:
        """Execute the check."""
        assert re.compile(self.regexp_pattern.strip(), flags=re.DOTALL).match(
            self.model.description
        ), (
            f"""`{get_clean_model_name(self.model.unique_id)}`'s description "{self.model.description}" doesn't match the supplied regex: {self.regexp_pattern}."""
        )

CheckModelDescriptionPopulated

Models must have a populated description.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_description_populated

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelDescriptionPopulated(BaseCheck):
    """Models must have a populated description.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_description_populated
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_description_populated"]

    def execute(self) -> None:
        """Execute the check."""
        assert self.is_description_populated(self.model.description), (
            f"`{get_clean_model_name(self.model.unique_id)}` does not have a populated description."
        )

CheckModelDirectories

Only specified sub-directories are permitted.

Parameters:

Name	Type	Description	Default
include	str	Regex pattern to the directory to check.	required
permitted_sub_directories	List[str]	List of permitted sub-directories.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Example(s):

manifest_checks:
- name: check_model_directories
  include: models
  permitted_sub_directories:
    - intermediate
    - marts
    - staging

# Restrict sub-directories within `./models/staging`
- name: check_model_directories
  include: ^models/staging
  permitted_sub_directories:
    - crm
    - payments

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelDirectories(BaseCheck):
    """Only specified sub-directories are permitted.

    Parameters:
        include (str): Regex pattern to the directory to check.
        permitted_sub_directories (List[str]): List of permitted sub-directories.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Raises:
        AssertionError: If the model directory does not contain a permitted sub-directory.

    Example(s):
        ```yaml
        manifest_checks:
        - name: check_model_directories
          include: models
          permitted_sub_directories:
            - intermediate
            - marts
            - staging
        ```
        ```yaml
        # Restrict sub-directories within `./models/staging`
        - name: check_model_directories
          include: ^models/staging
          permitted_sub_directories:
            - crm
            - payments
        ```

    """

    include: str
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_directories"]
    permitted_sub_directories: List[str]

    def execute(self) -> None:
        """Execute the check.

        Raises:
            AssertionError: If model located in `./models`.

        """
        matched_path = re.compile(self.include.strip().rstrip("/")).match(
            clean_path_str(self.model.original_file_path)
        )
        path_after_match = clean_path_str(self.model.original_file_path)[
            matched_path.end() + 1 :
        ]
        directory_to_check = path_after_match.split("/")[0]

        if directory_to_check.replace(".sql", "") == self.model.name:
            raise AssertionError(
                f"`{get_clean_model_name(self.model.unique_id)}` is not located in a valid sub-directory ({self.permitted_sub_directories})."
            )
        else:
            assert directory_to_check in self.permitted_sub_directories, (
                f"`{get_clean_model_name(self.model.unique_id)}` is located in the `{directory_to_check}` sub-directory, this is not a valid sub-directory ({self.permitted_sub_directories})."
            )

CheckModelDocumentedInSameDirectory

Models must be documented in the same directory where they are defined (i.e. .yml and .sql files are in the same directory).

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_documented_in_same_directory

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelDocumentedInSameDirectory(BaseCheck):
    """Models must be documented in the same directory where they are defined (i.e. `.yml` and `.sql` files are in the same directory).

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_documented_in_same_directory
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_documented_in_same_directory"]

    def execute(self) -> None:
        """Execute the check."""
        model_sql_dir = clean_path_str(self.model.original_file_path).split("/")[:-1]
        assert (  # noqa: PT018
            hasattr(self.model, "patch_path")
            and clean_path_str(self.model.patch_path) is not None
        ), f"`{get_clean_model_name(self.model.unique_id)}` is not documented."

        model_doc_dir = clean_path_str(
            self.model.patch_path[
                clean_path_str(self.model.patch_path).find("models") :
            ]
        ).split("/")[:-1]

        assert model_doc_dir == model_sql_dir, (
            f"`{get_clean_model_name(self.model.unique_id)}` is documented in a different directory to the `.sql` file: `{'/'.join(model_doc_dir)}` vs `{'/'.join(model_sql_dir)}`."
        )

CheckModelGrantPrivilege

Model can have grant privileges that match the specified pattern.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.
privilege_pattern	str	Regex pattern to match the privilege.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_grant_privilege
      include: ^models/marts
      privilege_pattern: ^select

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelGrantPrivilege(BaseCheck):
    """Model can have grant privileges that match the specified pattern.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        privilege_pattern (str): Regex pattern to match the privilege.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_grant_privilege
              include: ^models/marts
              privilege_pattern: ^select
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_grant_privilege"]
    privilege_pattern: str

    def execute(self) -> None:
        """Execute the check."""
        non_complying_grants = [
            i
            for i in self.model.config.grants
            if re.compile(self.privilege_pattern.strip()).match(i) is None
        ]

        assert not non_complying_grants, (
            f"`{get_clean_model_name(self.model.unique_id)}` has grants (`{self.privilege_pattern}`) that don't comply with the specified regexp pattern ({non_complying_grants})."
        )

CheckModelGrantPrivilegeRequired

Model must have the specified grant privilege.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.
privilege	str	The privilege that is required.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_grant_privilege_required
      include: ^models/marts
      privilege: select

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelGrantPrivilegeRequired(BaseCheck):
    """Model must have the specified grant privilege.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        privilege (str): The privilege that is required.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_grant_privilege_required
              include: ^models/marts
              privilege: select
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_grant_privilege_required"]
    privilege: str

    def execute(self) -> None:
        """Execute the check."""
        assert self.privilege in self.model.config.grants, (
            f"`{get_clean_model_name(self.model.unique_id)}` does not have the required grant privilege (`{self.privilege}`)."
        )

CheckModelHasContractsEnforced

Model must have contracts enforced.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_has_contracts_enforced
      include: ^models/marts

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasContractsEnforced(BaseCheck):
    """Model must have contracts enforced.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_contracts_enforced
              include: ^models/marts
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_contracts_enforced"]

    def execute(self) -> None:
        """Execute the check."""
        assert self.model.contract.enforced is True, (
            f"`{get_clean_model_name(self.model.unique_id)}` does not have contracts enforced."
        )

CheckModelHasMetaKeys

The meta config for models must have the specified keys.

Parameters:

Name	Type	Description	Default
keys	NestedDict	A list (that may contain sub-lists) of required keys.	required
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_has_meta_keys
      keys:
        - maturity
        - owner

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasMetaKeys(BaseCheck):
    """The `meta` config for models must have the specified keys.

    Parameters:
        keys (NestedDict): A list (that may contain sub-lists) of required keys.
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_meta_keys
              keys:
                - maturity
                - owner
        ```

    """

    keys: NestedDict
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_meta_keys"]

    def execute(self) -> None:
        """Execute the check."""
        missing_keys = find_missing_meta_keys(
            meta_config=self.model.meta,
            required_keys=self.keys.model_dump(),
        )
        assert missing_keys == [], (
            f"`{get_clean_model_name(self.model.unique_id)}` is missing the following keys from the `meta` config: {[x.replace('>>', '') for x in missing_keys]}"
        )

CheckModelHasNoUpstreamDependencies

Identify if models have no upstream dependencies as this likely indicates hard-coded tables references.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_has_no_upstream_dependencies

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasNoUpstreamDependencies(BaseCheck):
    """Identify if models have no upstream dependencies as this likely indicates hard-coded tables references.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_no_upstream_dependencies
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_no_upstream_dependencies"]

    def execute(self) -> None:
        """Execute the check."""
        assert len(self.model.depends_on.nodes) > 0, (
            f"`{get_clean_model_name(self.model.unique_id)}` has no upstream dependencies, this likely indicates hard-coded tables references."
        )

CheckModelHasSemiColon

Model may not end with a semi-colon (;).

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_has_semi_colon
      include: ^models/marts

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasSemiColon(BaseCheck):
    """Model may not end with a semi-colon (`;`).

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_semi_colon
              include: ^models/marts
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_semi_colon"]

    def execute(self) -> None:
        """Execute the check."""
        assert self.model.raw_code.strip()[-1] != ";", (
            f"`{get_clean_model_name(self.model.unique_id)}` ends with a semi-colon, this is not permitted."
        )

CheckModelHasTags

Models must have the specified tags.

Parameters:

Name	Type	Description	Default
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.	required
tags	List[str]	List of tags to check for.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_has_tags
      tags:
        - tag_1
        - tag_2

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasTags(BaseCheck):
    """Models must have the specified tags.

    Parameters:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        tags (List[str]): List of tags to check for.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_tags
              tags:
                - tag_1
                - tag_2
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_tags"]
    tags: List[str]

    def execute(self) -> None:
        """Execute the check."""
        missing_tags = [tag for tag in self.tags if tag not in self.model.tags]
        assert not missing_tags, (
            f"`{get_clean_model_name(self.model.unique_id)}` is missing required tags: {missing_tags}."
        )

CheckModelHasUniqueTest

Models must have a test for uniqueness of a column.

Parameters:

Name	Type	Description	Default
accepted_uniqueness_tests	Optional[List[str]]	List of tests that are accepted as uniqueness tests.	required
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.	required
tests	List[DbtBouncerTestBase]	List of DbtBouncerTestBase objects parsed from manifest.json.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_has_unique_test
      include: ^models/marts

manifest_checks:
# Example of allowing a custom uniqueness test
    - name: check_model_has_unique_test
      accepted_uniqueness_tests:
        - dbt_expectations.expect_compound_columns_to_be_unique # i.e. tests from packages must include package name
        - my_custom_uniqueness_test
        - unique

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasUniqueTest(BaseCheck):
    """Models must have a test for uniqueness of a column.

    Parameters:
        accepted_uniqueness_tests (Optional[List[str]]): List of tests that are accepted as uniqueness tests.
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        tests (List[DbtBouncerTestBase]): List of DbtBouncerTestBase objects parsed from `manifest.json`.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_unique_test
              include: ^models/marts
        ```
        ```yaml
        manifest_checks:
        # Example of allowing a custom uniqueness test
            - name: check_model_has_unique_test
              accepted_uniqueness_tests:
                - dbt_expectations.expect_compound_columns_to_be_unique # i.e. tests from packages must include package name
                - my_custom_uniqueness_test
                - unique
        ```

    """

    accepted_uniqueness_tests: Optional[List[str]] = Field(
        default=[
            "dbt_expectations.expect_compound_columns_to_be_unique",
            "dbt_utils.unique_combination_of_columns",
            "unique",
        ],
    )
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_unique_test"]
    tests: List["DbtBouncerTestBase"] = Field(default=[])

    def execute(self) -> None:
        """Execute the check."""
        num_unique_tests = sum(
            test.attached_node == self.model.unique_id
            and (
                (
                    f"{test.test_metadata.namespace}.{test.test_metadata.name}"  # type: ignore[operator]
                    in self.accepted_uniqueness_tests
                )  # tests from packages
                or (
                    test.test_metadata.namespace is None
                    and test.test_metadata.name in self.accepted_uniqueness_tests  # type: ignore[operator]
                )  # tests from within package
            )
            for test in self.tests
            if hasattr(test, "test_metadata")
        )
        assert num_unique_tests >= 1, (
            f"`{get_clean_model_name(self.model.unique_id)}` does not have a test for uniqueness of a column."
        )

CheckModelHasUnitTests

Models must have more than the specified number of unit tests.

Parameters:

Name	Type	Description	Default
min_number_of_unit_tests	Optional[int]	The minimum number of unit tests that a model must have.	required

Receives at execution time:

Name	Type	Description
manifest_obj	DbtBouncerManifest	The DbtBouncerManifest object parsed from manifest.json.
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.
unit_tests	List[UnitTests]	List of UnitTests objects parsed from manifest.json.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Warning

This check is only supported for dbt 1.8.0 and above.

Example(s):

manifest_checks:
    - name: check_model_has_unit_tests
      include: ^models/marts

manifest_checks:
    - name: check_model_has_unit_tests
      min_number_of_unit_tests: 2

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelHasUnitTests(BaseCheck):
    """Models must have more than the specified number of unit tests.

    Parameters:
        min_number_of_unit_tests (Optional[int]): The minimum number of unit tests that a model must have.

    Receives:
        manifest_obj (DbtBouncerManifest): The DbtBouncerManifest object parsed from `manifest.json`.
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        unit_tests (List[UnitTests]): List of UnitTests objects parsed from `manifest.json`.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    !!! warning

        This check is only supported for dbt 1.8.0 and above.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_has_unit_tests
              include: ^models/marts
        ```
        ```yaml
        manifest_checks:
            - name: check_model_has_unit_tests
              min_number_of_unit_tests: 2
        ```

    """

    manifest_obj: "DbtBouncerManifest" = Field(default=None)
    min_number_of_unit_tests: int = Field(default=1)
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_has_unit_tests"]
    unit_tests: List["UnitTests"] = Field(default=[])

    def execute(self) -> None:
        """Execute the check."""
        if get_package_version_number(
            self.manifest_obj.manifest.metadata.dbt_version
        ) >= get_package_version_number("1.8.0"):
            num_unit_tests = len(
                [
                    t.unique_id
                    for t in self.unit_tests
                    if t.depends_on.nodes[0] == self.model.unique_id
                ],
            )
            assert num_unit_tests >= self.min_number_of_unit_tests, (
                f"`{get_clean_model_name(self.model.unique_id)}` has {num_unit_tests} unit tests, this is less than the minimum of {self.min_number_of_unit_tests}."
            )
        else:
            logging.warning(
                "The `check_model_has_unit_tests` check is only supported for dbt 1.8.0 and above.",
            )

CheckModelLatestVersionSpecified

Check that the latest_version attribute of the model is set.

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_latest_version_specified
      include: ^models/marts

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelLatestVersionSpecified(BaseCheck):
    r"""Check that the `latest_version` attribute of the model is set.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_latest_version_specified
              include: ^models/marts
        ```

    """

    model_config = ConfigDict(extra="forbid", protected_namespaces=())

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_latest_version_specified"]

    def execute(self) -> None:
        """Execute the check."""
        assert self.model.latest_version is not None, (
            f"`{self.model.name}` does not have a specified `latest_version`."
        )

CheckModelMaxChainedViews

Models cannot have more than the specified number of upstream dependents that are not tables.

Parameters:

Name	Type	Description	Default
materializations_to_include	Optional[List[str]]	List of materializations to include in the check.	required
max_chained_views	Optional[int]	The maximum number of upstream dependents that are not tables.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.
models	List[DbtBouncerModelBase]	List of DbtBouncerModelBase objects parsed from manifest.json.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_max_chained_views

manifest_checks:
    - name: check_model_max_chained_views
      materializations_to_include:
        - ephemeral
        - my_custom_materialization
        - view
      max_chained_views: 5

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelMaxChainedViews(BaseCheck):
    """Models cannot have more than the specified number of upstream dependents that are not tables.

    Parameters:
        materializations_to_include (Optional[List[str]]): List of materializations to include in the check.
        max_chained_views (Optional[int]): The maximum number of upstream dependents that are not tables.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        models (List[DbtBouncerModelBase]): List of DbtBouncerModelBase objects parsed from `manifest.json`.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_max_chained_views
        ```
        ```yaml
        manifest_checks:
            - name: check_model_max_chained_views
              materializations_to_include:
                - ephemeral
                - my_custom_materialization
                - view
              max_chained_views: 5
        ```

    """

    manifest_obj: "DbtBouncerManifest" = Field(default=None)
    materializations_to_include: List[str] = Field(
        default=["ephemeral", "view"],
    )
    max_chained_views: int = Field(
        default=3,
    )
    model: "DbtBouncerModelBase" = Field(default=None)
    models: List["DbtBouncerModelBase"] = Field(default=[])
    name: Literal["check_model_max_chained_views"]

    def execute(self) -> None:
        """Execute the check."""

        def return_upstream_view_models(
            materializations,
            max_chained_views,
            models,
            model_unique_ids_to_check,
            package_name,
            depth=0,
        ):
            """Recursive function to return model unique_id's of upstream models that are views. Depth of recursion can be specified. If no models meet the criteria then an empty list is returned.

            Returns
            -
                List[str]: List of model unique_id's of upstream models that are views.

            """
            if depth == max_chained_views or model_unique_ids_to_check == []:
                return model_unique_ids_to_check

            relevant_upstream_models = []
            for model in model_unique_ids_to_check:
                upstream_nodes = list(
                    next(m2 for m2 in models if m2.unique_id == model).depends_on.nodes,
                )
                if upstream_nodes != []:
                    upstream_models = [
                        m
                        for m in upstream_nodes
                        if m.split(".")[0] == "model"
                        and m.split(".")[1] == package_name
                    ]
                    for i in upstream_models:
                        if (
                            next(
                                m for m in models if m.unique_id == i
                            ).config.materialized
                            in materializations
                        ):
                            relevant_upstream_models.append(i)

            depth += 1
            return return_upstream_view_models(
                materializations=materializations,
                max_chained_views=max_chained_views,
                models=models,
                model_unique_ids_to_check=relevant_upstream_models,
                package_name=package_name,
                depth=depth,
            )

        assert (
            len(
                return_upstream_view_models(
                    materializations=self.materializations_to_include,
                    max_chained_views=self.max_chained_views,
                    models=self.models,
                    model_unique_ids_to_check=[self.model.unique_id],
                    package_name=self.manifest_obj.manifest.metadata.project_name,
                ),
            )
            == 0
        ), (
            f"`{get_clean_model_name(self.model.unique_id)}` has more than {self.max_chained_views} upstream dependents that are not tables."
        )

CheckModelMaxFanout

Models cannot have more than the specified number of downstream models.

Parameters:

Name	Type	Description	Default
max_downstream_models	Optional[int]	The maximum number of permitted downstream models.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.
models	List[DbtBouncerModelBase]	List of DbtBouncerModelBase objects parsed from manifest.json.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_max_fanout
      max_downstream_models: 2

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelMaxFanout(BaseCheck):
    """Models cannot have more than the specified number of downstream models.

    Parameters:
        max_downstream_models (Optional[int]): The maximum number of permitted downstream models.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.
        models (List[DbtBouncerModelBase]): List of DbtBouncerModelBase objects parsed from `manifest.json`.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_max_fanout
              max_downstream_models: 2
        ```

    """

    max_downstream_models: int = Field(default=3)
    model: "DbtBouncerModelBase" = Field(default=None)
    models: List["DbtBouncerModelBase"] = Field(default=[])
    name: Literal["check_model_max_fanout"]

    def execute(self) -> None:
        """Execute the check."""
        num_downstream_models = sum(
            self.model.unique_id in m.depends_on.nodes for m in self.models
        )

        assert num_downstream_models <= self.max_downstream_models, (
            f"`{get_clean_model_name(self.model.unique_id)}` has {num_downstream_models} downstream models, which is more than the permitted maximum of {self.max_downstream_models}."
        )

CheckModelMaxNumberOfLines

Models may not have more than the specified number of lines.

Parameters:

Name	Type	Description	Default
max_number_of_lines	int	The maximum number of permitted lines.	required
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_max_number_of_lines

manifest_checks:
    - name: check_model_max_number_of_lines
      max_number_of_lines: 150

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelMaxNumberOfLines(BaseCheck):
    """Models may not have more than the specified number of lines.

    Parameters:
        max_number_of_lines (int): The maximum number of permitted lines.

        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_max_number_of_lines
        ```
        ```yaml
        manifest_checks:
            - name: check_model_max_number_of_lines
              max_number_of_lines: 150
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_max_number_of_lines"]
    max_number_of_lines: int = Field(default=100)

    def execute(self) -> None:
        """Execute the check."""
        actual_number_of_lines = self.model.raw_code.count("\n") + 1

        assert actual_number_of_lines <= self.max_number_of_lines, (
            f"`{get_clean_model_name(self.model.unique_id)}` has {actual_number_of_lines} lines, this is more than the maximum permitted number of lines ({self.max_number_of_lines})."
        )

CheckModelMaxUpstreamDependencies

Limit the number of upstream dependencies a model has.

Parameters:

Name	Type	Description	Default
max_upstream_macros	Optional[int]	The maximum number of permitted upstream macros.	required
max_upstream_models	Optional[int]	The maximum number of permitted upstream models.	required
max_upstream_sources	Optional[int]	The maximum number of permitted upstream sources.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_max_upstream_dependencies
      max_upstream_models: 3

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelMaxUpstreamDependencies(BaseCheck):
    """Limit the number of upstream dependencies a model has.

    Parameters:
        max_upstream_macros (Optional[int]): The maximum number of permitted upstream macros.
        max_upstream_models (Optional[int]): The maximum number of permitted upstream models.
        max_upstream_sources (Optional[int]): The maximum number of permitted upstream sources.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_max_upstream_dependencies
              max_upstream_models: 3
        ```

    """

    max_upstream_macros: int = Field(
        default=5,
    )
    max_upstream_models: int = Field(
        default=5,
    )
    max_upstream_sources: int = Field(
        default=1,
    )
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_max_upstream_dependencies"]

    def execute(self) -> None:
        """Execute the check."""
        num_upstream_macros = len(list(self.model.depends_on.macros))
        num_upstream_models = len(
            [m for m in self.model.depends_on.nodes if m.split(".")[0] == "model"],
        )
        num_upstream_sources = len(
            [m for m in self.model.depends_on.nodes if m.split(".")[0] == "source"],
        )

        assert num_upstream_macros <= self.max_upstream_macros, (
            f"`{get_clean_model_name(self.model.unique_id)}` has {num_upstream_macros} upstream macros, which is more than the permitted maximum of {self.max_upstream_macros}."
        )
        assert num_upstream_models <= self.max_upstream_models, (
            f"`{get_clean_model_name(self.model.unique_id)}` has {num_upstream_models} upstream models, which is more than the permitted maximum of {self.max_upstream_models}."
        )
        assert num_upstream_sources <= self.max_upstream_sources, (
            f"`{get_clean_model_name(self.model.unique_id)}` has {num_upstream_sources} upstream sources, which is more than the permitted maximum of {self.max_upstream_sources}."
        )

CheckModelNames

Models must have a name that matches the supplied regex.

Parameters:

Name	Type	Description	Default
model_name_pattern	str	Regexp the model name must match.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_names
      include: ^models/intermediate
      model_name_pattern: ^int_
    - name: check_model_names
      include: ^models/staging
      model_name_pattern: ^stg_

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelNames(BaseCheck):
    """Models must have a name that matches the supplied regex.

    Parameters:
        model_name_pattern (str): Regexp the model name must match.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_names
              include: ^models/intermediate
              model_name_pattern: ^int_
            - name: check_model_names
              include: ^models/staging
              model_name_pattern: ^stg_
        ```

    """

    model_config = ConfigDict(extra="forbid", protected_namespaces=())

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_names"]
    model_name_pattern: str

    def execute(self) -> None:
        """Execute the check."""
        assert (
            re.compile(self.model_name_pattern.strip()).match(self.model.name)
            is not None
        ), (
            f"`{get_clean_model_name(self.model.unique_id)}` does not match the supplied regex `{self.model_name_pattern.strip()})`."
        )

CheckModelNumberOfGrants

Model can have the specified number of privileges.

Receives at execution time:

Name	Type	Description
max_number_of_privileges	Optional(int)	Maximum number of privileges, inclusive.
min_number_of_privileges	Optional(int)	Minimum number of privileges, inclusive.
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_number_of_grants
      include: ^models/marts
      max_number_of_privileges: 1 # Optional
      min_number_of_privileges: 0 # Optional

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelNumberOfGrants(BaseCheck):
    """Model can have the specified number of privileges.

    Receives:
        max_number_of_privileges (Optional(int)): Maximum number of privileges, inclusive.
        min_number_of_privileges (Optional(int)): Minimum number of privileges, inclusive.
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_number_of_grants
              include: ^models/marts
              max_number_of_privileges: 1 # Optional
              min_number_of_privileges: 0 # Optional
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_number_of_grants"]
    max_number_of_privileges: int = Field(default=100)
    min_number_of_privileges: int = Field(default=0)

    def execute(self) -> None:
        """Execute the check."""
        num_grants = len(self.model.config.grants.keys())

        assert num_grants >= self.min_number_of_privileges, (
            f"`{get_clean_model_name(self.model.unique_id)}` has less grants (`{num_grants}`) than the specified minimum ({self.min_number_of_privileges})."
        )
        assert num_grants <= self.max_number_of_privileges, (
            f"`{get_clean_model_name(self.model.unique_id)}` has more grants (`{num_grants}`) than the specified maximum ({self.max_number_of_privileges})."
        )

CheckModelPropertyFileLocation

Model properties files must follow the guidance provided by dbt here.

Parameters:

Name	Type	Description	Default
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_property_file_location

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelPropertyFileLocation(BaseCheck):
    """Model properties files must follow the guidance provided by dbt [here](https://docs.getdbt.com/best-practices/how-we-structure/1-guide-overview).

    Parameters:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_property_file_location
        ```

    """

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_property_file_location"]

    def execute(self) -> None:
        """Execute the check."""
        assert (  # noqa: PT018
            hasattr(self.model, "patch_path")
            and clean_path_str(self.model.patch_path) is not None
        ), f"`{get_clean_model_name(self.model.unique_id)}` is not documented."

        expected_substr = (
            "_".join(clean_path_str(self.model.original_file_path).split("/")[1:-1])
            .replace("staging", "stg")
            .replace("intermediate", "int")
            .replace("marts", "")
        )
        properties_yml_name = clean_path_str(self.model.patch_path).split("/")[-1]

        assert properties_yml_name.startswith(
            "_",
        ), (
            f"The properties file for `{get_clean_model_name(self.model.unique_id)}` (`{properties_yml_name}`) does not start with an underscore."
        )
        assert expected_substr in properties_yml_name, (
            f"The properties file for `{get_clean_model_name(self.model.unique_id)}` (`{properties_yml_name}`) does not contain the expected substring (`{expected_substr}`)."
        )
        assert properties_yml_name.endswith(
            "__models.yml",
        ), (
            f"The properties file for `{get_clean_model_name(self.model.unique_id)}` (`{properties_yml_name}`) does not end with `__models.yml`."
        )

CheckModelSchemaName

Models must have a schema name that matches the supplied regex.

Note that most setups will use schema names in development that are prefixed, for example: * dbt_jdoe_stg_payments * mary_stg_payments

Please account for this if you wish to run dbt-bouncer against locally generated manifests.

Parameters:

Name	Type	Description	Default
schema_name_pattern	str	Regexp the schema name must match.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_schema_name
      include: ^models/intermediate
      schema_name_pattern: .*intermediate # Accounting for schemas like `dbt_jdoe_intermediate`.
    - name: check_model_schema_name
      include: ^models/staging
      schema_name_pattern: .*stg_.*

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelSchemaName(BaseCheck):
    """Models must have a schema name that matches the supplied regex.

    Note that most setups will use schema names in development that are prefixed, for example:
        * dbt_jdoe_stg_payments
        * mary_stg_payments

    Please account for this if you wish to run `dbt-bouncer` against locally generated manifests.

    Parameters:
        schema_name_pattern (str): Regexp the schema name must match.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_schema_name
              include: ^models/intermediate
              schema_name_pattern: .*intermediate # Accounting for schemas like `dbt_jdoe_intermediate`.
            - name: check_model_schema_name
              include: ^models/staging
              schema_name_pattern: .*stg_.*
        ```

    """

    model_config = ConfigDict(extra="forbid", protected_namespaces=())

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_schema_name"]
    schema_name_pattern: str

    def execute(self) -> None:
        """Execute the check."""
        assert (
            re.compile(self.schema_name_pattern.strip()).match(self.model.schema_)
            is not None
        ), (
            f"`{self.model.schema_}` does not match the supplied regex `{self.schema_name_pattern.strip()})`."
        )

CheckModelVersionAllowed

Check that the version of the model matches the supplied regex pattern.

Parameters:

Name	Type	Description	Default
version_pattern	str	Regexp the version must match.	required

Receives at execution time:

Name	Type	Description
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_version_allowed
      include: ^models/marts
      version_pattern: >- # Versions must be numeric
        [0-9]\d*
    - name: check_model_version_allowed
      include: ^models/marts
      version_pattern: ^(stable|latest)$ # Version can be "stable" or "latest", nothing else is permitted

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelVersionAllowed(BaseCheck):
    r"""Check that the version of the model matches the supplied regex pattern.

    Parameters:
        version_pattern (str): Regexp the version must match.

    Receives:
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_version_allowed
              include: ^models/marts
              version_pattern: >- # Versions must be numeric
                [0-9]\d*
            - name: check_model_version_allowed
              include: ^models/marts
              version_pattern: ^(stable|latest)$ # Version can be "stable" or "latest", nothing else is permitted
        ```

    """

    model_config = ConfigDict(extra="forbid", protected_namespaces=())

    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_version_allowed"]
    version_pattern: str

    def execute(self) -> None:
        """Execute the check."""
        if self.model.version:
            assert (
                re.compile(self.version_pattern.strip()).match(str(self.model.version))
                is not None
            ), (
                f"Version `{self.model.version}` in `{self.model.name}` does not match the supplied regex `{self.version_pattern.strip()})`."
            )

CheckModelVersionPinnedInRef

Check that the version of the model is always specified in downstream nodes.

Receives at execution time:

Name	Type	Description
manifest_obj	DbtBouncerManifest	The DbtBouncerManifest object parsed from manifest.json.
model	DbtBouncerModelBase	The DbtBouncerModelBase object to check.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
exclude	Optional[str]	Regex pattern to match the model path. Model paths that match the pattern will not be checked.
include	Optional[str]	Regex pattern to match the model path. Only model paths that match the pattern will be checked.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_version_pinned_in_ref
      include: ^models/marts

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelVersionPinnedInRef(BaseCheck):
    r"""Check that the version of the model is always specified in downstream nodes.

    Receives:
        manifest_obj (DbtBouncerManifest): The DbtBouncerManifest object parsed from `manifest.json`.
        model (DbtBouncerModelBase): The DbtBouncerModelBase object to check.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        exclude (Optional[str]): Regex pattern to match the model path. Model paths that match the pattern will not be checked.
        include (Optional[str]): Regex pattern to match the model path. Only model paths that match the pattern will be checked.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_version_pinned_in_ref
              include: ^models/marts
        ```

    """

    model_config = ConfigDict(extra="forbid", protected_namespaces=())

    manifest_obj: "DbtBouncerManifest" = Field(default=None)
    model: "DbtBouncerModelBase" = Field(default=None)
    name: Literal["check_model_version_pinned_in_ref"]

    def execute(self) -> None:
        """Execute the check."""
        downstream_models = [
            x
            for x in self.manifest_obj.manifest.child_map[self.model.unique_id]
            if x.startswith("model.")
        ]
        downstream_models_with_unversioned_refs: List[str] = []
        for m in downstream_models:
            downstream_models_with_unversioned_refs.extend(
                m
                for ref in self.manifest_obj.manifest.nodes[m].refs
                if ref.name == self.model.unique_id.split(".")[-1] and not ref.version
            )

        assert not downstream_models_with_unversioned_refs, (
            f"`{self.model.name}` is referenced without a pinned version in downstream models: {downstream_models_with_unversioned_refs}."
        )

CheckModelsDocumentationCoverage

Set the minimum percentage of models that have a populated description.

Parameters:

Name	Type	Description	Default
min_model_documentation_coverage_pct	float	The minimum percentage of models that must have a populated description.	required

Receives at execution time:

Name	Type	Description
models	List[DbtBouncerModelBase]	List of DbtBouncerModelBase objects parsed from manifest.json.

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_documentation_coverage
      min_model_documentation_coverage_pct: 90

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelsDocumentationCoverage(BaseModel):
    """Set the minimum percentage of models that have a populated description.

    Parameters:
        min_model_documentation_coverage_pct (float): The minimum percentage of models that must have a populated description.

    Receives:
        models (List[DbtBouncerModelBase]): List of DbtBouncerModelBase objects parsed from `manifest.json`.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.

    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_documentation_coverage
              min_model_documentation_coverage_pct: 90
        ```

    """

    model_config = ConfigDict(extra="forbid")

    description: Optional[str] = Field(
        default=None,
        description="Description of what the check does and why it is implemented.",
    )
    index: Optional[int] = Field(
        default=None,
        description="Index to uniquely identify the check, calculated at runtime.",
    )
    min_model_documentation_coverage_pct: int = Field(
        default=100,
        ge=0,
        le=100,
    )
    models: List["DbtBouncerModelBase"] = Field(default=[])
    name: Literal["check_model_documentation_coverage"]
    severity: Optional[Literal["error", "warn"]] = Field(
        default="error",
        description="Severity of the check, one of 'error' or 'warn'.",
    )

    def execute(self) -> None:
        """Execute the check."""
        num_models = len(self.models)
        models_with_description = []
        for model in self.models:
            if len(model.description.strip()) > 4:
                models_with_description.append(model.unique_id)

        num_models_with_descriptions = len(models_with_description)
        model_description_coverage_pct = (
            num_models_with_descriptions / num_models
        ) * 100

        assert (
            model_description_coverage_pct >= self.min_model_documentation_coverage_pct
        ), (
            f"Only {model_description_coverage_pct}% of models have a populated description, this is less than the permitted minimum of {self.min_model_documentation_coverage_pct}%."
        )

CheckModelsTestCoverage

Set the minimum percentage of models that have at least one test.

Parameters:

Name	Type	Description	Default
min_model_test_coverage_pct	float	The minimum percentage of models that must have at least one test.	required
models	List[DbtBouncerModelBase]	List of DbtBouncerModelBase objects parsed from manifest.json.	required
tests	List[DbtBouncerTestBase]	List of DbtBouncerTestBase objects parsed from manifest.json.	required

Other Parameters (passed via config file):

Name	Type	Description
description	Optional[str]	Description of what the check does and why it is implemented.
severity	Optional[Literal['error', 'warn']]	Severity level of the check. Default: error.

Example(s):

manifest_checks:
    - name: check_model_test_coverage
      min_model_test_coverage_pct: 90

Source code in src/dbt_bouncer/checks/manifest/check_models.py

class CheckModelsTestCoverage(BaseModel):
    """Set the minimum percentage of models that have at least one test.

    Parameters:
        min_model_test_coverage_pct (float): The minimum percentage of models that must have at least one test.
        models (List[DbtBouncerModelBase]): List of DbtBouncerModelBase objects parsed from `manifest.json`.
        tests (List[DbtBouncerTestBase]): List of DbtBouncerTestBase objects parsed from `manifest.json`.

    Other Parameters:
        description (Optional[str]): Description of what the check does and why it is implemented.
        severity (Optional[Literal["error", "warn"]]): Severity level of the check. Default: `error`.


    Example(s):
        ```yaml
        manifest_checks:
            - name: check_model_test_coverage
              min_model_test_coverage_pct: 90
        ```

    """

    model_config = ConfigDict(extra="forbid")

    description: Optional[str] = Field(
        default=None,
        description="Description of what the check does and why it is implemented.",
    )
    index: Optional[int] = Field(
        default=None,
        description="Index to uniquely identify the check, calculated at runtime.",
    )
    name: Literal["check_model_test_coverage"]
    min_model_test_coverage_pct: float = Field(
        default=100,
        ge=0,
        le=100,
    )
    models: List["DbtBouncerModelBase"] = Field(default=[])
    severity: Optional[Literal["error", "warn"]] = Field(
        default="error",
        description="Severity of the check, one of 'error' or 'warn'.",
    )
    tests: List["DbtBouncerTestBase"] = Field(default=[])

    def execute(self) -> None:
        """Execute the check."""
        num_models = len(self.models)
        models_with_tests = []
        for model in self.models:
            for test in self.tests:
                if model.unique_id in test.depends_on.nodes:
                    models_with_tests.append(model.unique_id)
        num_models_with_tests = len(set(models_with_tests))
        model_test_coverage_pct = (num_models_with_tests / num_models) * 100

        assert model_test_coverage_pct >= self.min_model_test_coverage_pct, (
            f"Only {model_test_coverage_pct}% of models have at least one test, this is less than the permitted minimum of {self.min_model_test_coverage_pct}%."
        )