Issue Running Functional Tests with dbt-adapters in dbt-core Project

Question

I'm encountering an issue while running functional tests in the dbt-core project after making changes to the dbt-adapters project. Here's the rundown:

1. I've made modifications to the dbt-adapters project.
2. I've set up a shared virtual environment for both the dbt-adapters and dbt-core projects.
3. I've installed the development requirements using pip install -r dev-requirements.txt and installed dbt-adapters as editable.
4. When trying to run a functional test with python3 -m pytest tests/functional/simple_snapshot, I faced the following error:

ImportError: Error importing plugin "dbt.tests.fixtures.project": No module named 'dbt.tests.fixtures'

I'm struggling to pinpoint the cause of this error. Could you offer any guidance on resolving it? Also, I'd appreciate any advice or best practices for setting up a testing environment for dbt projects and smoothly running functional tests across different dbt projects.