test: add unit tests for errorhandler format_stacktrace

[Dor-bl]

🎯 What: The testing gap addressed

• Added comprehensive unit tests for format_stacktrace in appium/webdriver/errorhandler.py.

📊 Coverage: What scenarios are now tested

• Falsy inputs (None, "", [], ())
• Single-line and multi-line string inputs
• Frame dictionaries with full metadata (className, methodName, fileName, lineNumber)
• Frame dictionaries with missing or optional fields
• Frame sequences containing non-dictionary elements
• Non-iterable inputs raising TypeError

✨ Result: The improvement in test coverage

• Achieved 100% test coverage for format_stacktrace.
• Ensures reliable stacktrace formatting without regressions.

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PR created automatically by Jules for task 16472936532542355238 started by @Dor-bl

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[Copilot]

🟢 Approval recommended

The tests correctly cover the function’s branches and expected formatting behavior.

0 open findings

What changed in this PR

Adds unit coverage for format_stacktrace, protecting stack-trace formatting behavior from regressions.

Changes:

• Tests falsy, string, frame-sequence, malformed, and non-iterable inputs.
• Covers default metadata formatting and invalid frame filtering.

File	Description
test/​unit/​webdriver/​errorhandler_test.py	Adds comprehensive tests for format_stacktrace.

🧠 Review effort: Balanced

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[Dor-bl]

Closing: duplicate of #17 (and the pattern already seen with #18, #20 and #27). This PR also creates a brand-new test/unit/webdriver/errorhandler_test.py, so it conflicts outright with #17, which is already open and covers format_stacktrace with equal or broader coverage. Nothing here is worth mirroring upstream separately from #17.

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Generated by Claude Code

[google-labs-jules]

Closing: duplicate of #17 (and the pattern already seen with #18, #20 and #27). This PR also creates a brand-new test/unit/webdriver/errorhandler_test.py, so it conflicts outright with #17, which is already open and covers format_stacktrace with equal or broader coverage. Nothing here is worth mirroring upstream separately from #17.

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Generated by Claude Code

Understood. Acknowledging that this work is obsolete and stopping work on this task.