test: add Airflow 3 DAG versioning tests for Cosmos #2169
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Pull request overview
This PR introduces comprehensive integration tests for Airflow 3's DAG versioning system when used with Cosmos. The tests verify that DAG version numbers increment correctly when dbt models are added and remain unchanged when the DAG structure stays the same.
Key changes:
- Added integration tests for Airflow 3 DAG versioning functionality
- Implemented test fixtures for DAG serialization, cleanup, and task instance creation
- Created a test setup that copies jaffle_shop project to a temporary directory for isolated testing
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Description
This PR adds a test for Airflow 3 versioning. We verify that adding a model to DbtDag will change a dag version.
Related Issue(s)
#2131
Breaking Change?
Checklist