Automatic merge from submit-queue (batch tested with PRs 40543, 39999)

Improve code coverage for scheduler/algorithm/priorities

**What this PR does / why we need it**:

Improve code coverage for scheduler/algorithm/priorities from #39559 

This is my first unit test  for kubernetes , thanks for your review.

**Special notes for your reviewer**:

**Release note**:

```release-note
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