feat: add complete interpreter test coverage for DaemonSet

[7h3-3mp7y-m4n]

What type of PR is this?

Adds output-verification test cases for DaemonSet under third-party resource customizations, covering

• InterpretHealth

What this PR does / why we need it:

Improves test coverage for Kruise DaemonSet interpreter logic

Which issue(s) this PR fixes:

Fixes #6952

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[karmada-bot]

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• pkg/resourceinterpreter/default/thirdparty/OWNERS

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[gemini-code-assist]

Summary of Changes

Hello @7h3-3mp7y-m4n, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on bolstering the robustness of DaemonSet health interpretation within the system. By expanding the test suite with new and detailed scenarios, it ensures that the system can accurately identify and report various unhealthy states of DaemonSets. This enhancement is crucial for maintaining the reliability and correctness of resource management, particularly for DaemonSets managed through third-party resource customizations.

Highlights

• Enhanced DaemonSet Health Interpretation Tests: Added comprehensive output-verification test cases for the InterpretHealth functionality of DaemonSets under third-party resource customizations.
• New Unhealthy State Scenarios: Introduced specific test scenarios to verify unhealthy states of DaemonSets, including cases where observedGeneration does not match generation, when numberAvailable is less than updatedNumberScheduled, and when updatedNumberScheduled is less than desiredNumberScheduled.
• Improved Test Coverage: Significantly improved the overall test coverage for the Kruise DaemonSet interpreter logic, addressing and fixing issue [Umbrella] Enhance third-party resource interpreter tests with output verification #6952.

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[gemini-code-assist]

Code Review

This pull request enhances the test coverage for the Kruise DaemonSet resource interpreter by adding several test cases for health interpretation. The new tests cover scenarios where the DaemonSet is considered unhealthy, such as generation mismatch, not all pods being updated, and not all updated pods being available. The additions are logical and correctly reflect the health interpretation rules. I have a couple of minor suggestions regarding code style in the test data file to improve maintainability.

[gemini-code-assist]

There is trailing whitespace on this line. While it may not affect YAML parsing in this context, it's considered a good practice to remove it to maintain code cleanliness and prevent potential issues with tools that are sensitive to whitespace.

    updatedNumberScheduled: 3

[gemini-code-assist]

The file is missing a newline character at the end. It's a standard convention (part of the POSIX standard for text files) to end files with a newline. This ensures file integrity and prevents issues with some command-line tools that process text files.

  healthy: false

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46.55%. Comparing base (0eee182) to head (78f3fec).
⚠️ Report is 25 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7084      +/-   ##
==========================================
- Coverage   46.56%   46.55%   -0.02%     
==========================================
  Files         700      700              
  Lines       48084    48091       +7     
==========================================
- Hits        22392    22390       -2     
- Misses      24010    24019       +9     
  Partials     1682     1682              

Flag	Coverage Δ
unittests	46.55% <ø> (-0.02%)	⬇️

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