ci(postgres): fix postgres list stored procedure flaky test

[duwenxin99]

Add schema cleanup routine based on timestamp at the beginning of the test. Add timestamp to schema name.

[gemini-code-assist]

Summary of Changes

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This pull request addresses a flaky test related to listing PostgreSQL stored procedures. It improves test reliability by initializing a Go slice to an empty state to prevent nil dereferences and by relaxing a specific count assertion in a test case that was contributing to its instability.

Highlights

• Defensive Programming: The clusterPbs slice in internal/sources/dataproc/dataproc.go was explicitly initialized to an empty slice []*dataprocpb.Cluster{} to prevent potential nil pointer issues and ensure consistent behavior.
• Test Stability: The expectedCount assertion was removed from a test case in tests/tool.go for listing stored procedures, addressing flakiness by focusing on the presence of data rather than an exact count.

Changelog

• internal/sources/dataproc/dataproc.go
  • Initialized clusterPbs slice to an empty slice.
• tests/tool.go
  • Removed expectedCount assertion from a test case.

Activity

• No human activity has been recorded on this pull request yet.

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[gemini-code-assist]

Code Review

The original code review comment regarding test flakiness and assertion strength in RunPostgresListStoredProcedureTest has been retained as it does not contradict any of the provided rules and offers valuable feedback for improving test robustness.