# Test Failures — Iteration d30f7414

## Summary

**ALL TESTS PASSED** ✅

- Total tests run: 301
- Passed: 301
- Failed: 0
- Test execution time: < 1 second

## Test Coverage Validation

### Function Definition Parsing (AC2.1, AC2.2, AC2.3)
✅ Zero-parameter functions parse correctly
✅ Functions with one parameter parse correctly
✅ Functions with multiple parameters parse correctly
✅ Function bodies with multiple statement types parse correctly
✅ Empty function bodies parse correctly
✅ Nested function definitions parse correctly

### Return Statement Parsing (AC2.5)
✅ Return without value parses into Statement::Return { value: None }
✅ Return with value parses into Statement::Return { value: Some(Expression) }
✅ Return with complex expressions parse correctly

### Function Call Parsing
✅ Function calls with zero arguments parse into Expression::Call
✅ Function calls with one argument parse correctly
✅ Function calls with multiple arguments parse correctly
✅ Function calls with expression arguments parse correctly
✅ Function calls with variable arguments parse correctly
✅ Nested function calls parse correctly
✅ Function calls in various contexts (print, assignment, return) parse correctly

### Error Cases
✅ Missing colon in function definition produces clear error
✅ Missing parenthesis in function definition produces clear error
✅ Missing right paren in function call produces clear error

### Indentation Tracking (15 comprehensive tests)
✅ Nested functions at different indent levels
✅ Functions stop at dedent correctly
✅ Functions at arbitrary indent levels (column 4, etc.)
✅ Function bodies with blank lines
✅ Deeply nested functions (3 levels)
✅ Indented function followed by statements at different levels
✅ Mixed indentation within function body
✅ Complex nesting scenarios
✅ Deeply indented statements
✅ Multiple functions at same indent level
✅ Functions followed by same-indent statements
✅ Multiple statements after function
✅ Empty then non-empty function
✅ Varying statement indents within body
✅ Multiple functions at root level

### Regression Check
✅ All 301 tests pass (including all pre-existing parser tests)
✅ No regressions detected

## Edge Cases Tested

1. **Empty function bodies** - handled correctly
2. **Nested function definitions** - up to 3 levels deep
3. **Functions at arbitrary indentation** - column tracking works correctly
4. **Blank lines in function body** - don't prematurely end function
5. **Mixed indentation** - statements at varying indents within body
6. **Function calls in all contexts** - print, assignment, return, nested
7. **Complex expression arguments** - binary operations, nested calls
8. **Multiple functions** - at same level and different levels

## Test Count Verification

- **Acceptance Criterion**: At least 15 new parser tests for function syntax variations
- **Actual Count**: 63 total parser tests, including:
  - 15+ indentation tracking tests
  - Multiple function definition tests
  - Multiple return statement tests
  - Multiple function call tests
  - Multiple error case tests

**Result**: Exceeds requirement ✅

## Conclusion

No test failures detected. All acceptance criteria are fully covered with comprehensive test cases. The implementation correctly handles:
- Function definition parsing (def name(params): body)
- Return statement parsing (with and without value)
- Function call parsing (0+ arguments in various contexts)
- Clear error messages for malformed syntax
- Complex indentation scenarios
- All edge cases

The coder's implementation is production-ready with excellent test coverage.
