[confcom] Add test for tar-based policy generation working even when Docker is unavailable

[micromaomao]

Adds a unit test covering the regression fixed in #9863: when generating a policy with --tar and the image is present in the tar, Docker must not be required.

Merge after #9863

Agent-Logs-Url: https://github.com/micromaomao/azure-cli-extensions/sessions/f7739453-8606-43aa-b004-ac3d8edef47c
Co-authored-by: micromaomao 6070533+micromaomao@users.noreply.github.com
Signed-off-by: Tingmao Wang tingmaowang@microsoft.com

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[azure-client-tools-bot-prd]

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Thanks for your contribution!

[azure-client-tools-bot-prd]

Hi @micromaomao,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

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[github-actions]

Hi @micromaomao

Release Suggestions

Module: confcom

• Update VERSION to 2.0.1 in src/confcom/setup.py

Notes

• For more info about extension versioning, please refer to Extension version schema

[Copilot]

Pull request overview

Adds a regression unit test to ensure policy generation using --tar succeeds even if Docker client creation fails (covering the scenario fixed in PR #9863).

Changes:

• Add a new unittest that patches docker.from_env() to raise DockerException and verifies policy population works when the image is supplied via tar_mapping.
• Add test-only imports needed for mocking and raising Docker exceptions.