Error in macros/schema_tests/string_matching/*

[samantha-guerriero-cko]

All the methods in macros/schema_tests/string_matching/ define a group_by_columns=group_by functionality, but group_by is not defined in the method which makes them fail with 'MacroGenerator' object is not iterable.

Fix should be to set up group_by=None in methods' definition as per the other macros with this functionality.

e.g.,
{% test expect_column_value_lengths_to_equal(model, column_name,
value,
group_by=None,
row_condition=None
) %}

[clausherther]

Hi @samantha-guerriero-cko , thanks for raising that issue! You're right, I see the missing params. What's weird is that this passes our integration tests without an error. For example, this test gets called here.
Could you share some more information about your environment (which platform, what version dbt & Python)?

Also, let me know if you're interested in submitting a PR for this before I jump on this myself.

[clausherther]

Btw, I think the correct treatment here is probably to not support group_by for this particular test, since the expression is not an aggregation so it would fail on the group by anyway.

So, I'd set the group_by_columns param to None in the call to expression_is_true:

{{ dbt_expectations.expression_is_true(model,
                                        expression=expression,
                                        group_by_columns=None,
                                        row_condition=row_condition
                                        )
                                        }}

[samantha-guerriero-cko]

Btw, I think the correct treatment here is probably to not support group_by for this particular test, since the expression is not an aggregation so it would fail on the group by anyway.

So, I'd set the group_by_columns param to None in the call to expression_is_true:

{{ dbt_expectations.expression_is_true(model,
                                        expression=expression,
                                        group_by_columns=None,
                                        row_condition=row_condition
                                        )
                                        }}

It makes sense to make the group_by_columns=None :)

For what concerns my environment:

• dbt = 0.21.0 (have tried also with 0.20.0)
• Python = 3.9.6
• Platform = macOS Big Sur 11.6

I am happy to open a PR for this 💪

[clausherther]

@samantha-guerriero-cko amazing, thank you!