[TestGru] Add unit test for src/utils/ui.ts

[gru-agent]

Trigger Info

Trigger Type	Triggered By	Source File	Assignment
Manual	zthreefires	src/utils/ui.ts	Detail

Summary

This PR introduces unit tests for utility functions in ui.ts to ensure their correctness and reliability. The following functions are covered:

• consumeNextMatching:

  • Tests for matching and consuming lines based on a regex pattern.

  • Handles scenarios with empty lines, no matches, and empty input.

• consumeBlockIfMatches:

  • Verifies behavior when the first non-empty line matches a regex pattern.

  • Tests for cases with no matches and empty input.

• splitColumns:

  • Ensures proper splitting of strings into two columns by whitespace.

  • Handles multiple spaces, single-column input, and trims whitespace.

• drawPointer:

  • Validates pointer drawing with varying widths.

  • Tests edge cases like minimum width.

These tests improve confidence in the utility functions and help prevent regressions.

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