[Feature] Add functionality to only run tests

[luis-fnogueira]

Description

Hi y'all!

I'd like to periodically run only the dbt tests of my project using cosmos, using an approach similar to:

        render_config=RenderConfig(                               
            test_behavior=TestBehavior.ONLY_TESTS

Would that be possible for future releases? Or is already there a workaround to do that? I could not figure it out at the documentation.

Use case/motivation

I'd like to periodically have an alert on Slack about how my dbt tests are. Like a summary.

Related issues

No response

Are you willing to submit a PR?

• Yes, I am willing to submit a PR!

[tatiana]

@luis-fnogueira This feels like a duplicate of #1242 and potentially related to #959.

Would it be an option to use the DbtTestLocalOperator (

astronomer-cosmos/cosmos/operators/local.py

Line 720 in 4c9b28f

class DbtTestLocalOperator(DbtTestMixin, DbtLocalBaseOperator):

) or an equivalent directly to run tests only? Would this solve your use-case?

As illustrated in:

astronomer-cosmos/tests/operators/test_local.py

Lines 458 to 465 in 4c9b28f

	test_operator = DbtTestLocalOperator(
	profile_config=real_profile_config,
	project_dir=DBT_PROJ_DIR,
	task_id="test",
	dbt_cmd_flags=["--models", "stg_customers"],
	install_deps=True,
	append_env=True,
	)