fix(test): mock get_vcs correctly

[abn]

Previously, the test suite relied on the test environment to be the same as that of a developer and hence implicitly providing a git boundary. This allowed for certain test cases using fixtures to fail when tests are run from the release sdist. This change mocks get_vcs to ensure that these cases pass as expected.

Resolves: python-poetry/poetry#9967

Summary by Sourcery

Tests:

• Mock get_vcs to ensure that test cases using fixtures pass as expected when tests are run from the release sdist.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request mocks the get_vcs function to resolve an issue where test fixtures were failing when tests were run from the release sdist. This ensures that the test suite no longer relies on the test environment being the same as a developer's environment, which implicitly provided a git boundary.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Mock the get_vcs function.	Added a new fixture with_mocked_get_vcs that mocks the Git.run method and the get_vcs function itself. The Git.run method is mocked to return a specific string. The get_vcs function is mocked to return a Git object.	tests/conftest.py
Disable global mocking of get_vcs in tests/vcs/test_vcs.py.	Added a new fixture with_mocked_get_vcs that overrides the global mock and does nothing, effectively disabling the mock for these specific tests.	tests/vcs/test_vcs.py

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[sourcery-ai]

Hey @abn - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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