# Test Failures — Iteration 6203b6a3

## Summary
✅ **ALL TESTS PASSED** - No failures detected

## Test Execution Results

### Full Test Suite
- **Command**: `cargo test --release --lib`
- **Total Tests**: 344
- **Passed**: 344
- **Failed**: 0
- **Exit Code**: 0

### Value Module Tests (with new coverage tests)
- **Total Tests**: 27
- **Passed**: 27
- **Failed**: 0

### New Tests Added for Coverage Gaps

#### AC1: Copy Trait Verification
- **Test**: `test_value_copy_trait` ✅ PASSED
- **Coverage**: Validates that Value::Integer and Value::None both implement Copy trait semantics
- **Behavior Tested**:
  - Value can be assigned multiple times without move semantics
  - Both Integer and None variants are Copy-able

#### AC2: as_integer() Panic Documentation
- **Test**: `test_as_integer_panic_on_none` ✅ PASSED
- **Coverage**: Validates that calling as_integer() on Value::None panics with the documented error message
- **Expected Panic Message**: "Called as_integer on None value: expected Value::Integer but found Value::None. This indicates a type error in the VM - ensure all operations produce valid Integer values."

#### Edge Case Tests
- **Test**: `test_display_none` ✅ PASSED
  - Verifies None displays as empty string

- **Test**: `test_value_none_equality` ✅ PASSED
  - Verifies None equality semantics

- **Test**: `test_binary_op_with_none` ✅ PASSED
  - Verifies binary operations with None produce appropriate errors
  - Tests None on left, right, and both operands

- **Test**: `test_unary_op_with_none` ✅ PASSED
  - Verifies unary operations with None produce appropriate errors
  - Tests both Neg and Pos operators

### Compilation Status

#### AC4: No New Compilation Errors or Warnings
- **Command**: `cargo build --release --lib`
- **Exit Code**: 0
- **New Errors**: 0
- **New Warnings**: 0
- **Pre-existing Warnings**: 2 (unrelated to Copy trait changes)
  - `warning: field 'functions' is never read` (in compiler.rs)
  - `warning: field 'body_len' is never read` (in vm.rs)

**Note**: The 2 warnings existed before the Copy trait changes and are not introduced by this issue's implementation.

## Coverage Analysis

### Acceptance Criteria Test Coverage

| AC | Description | Test Coverage | Status |
|----|-------------|---------------|--------|
| AC1 | Value enum derives Copy trait | `test_value_copy_trait` | ✅ COVERED |
| AC2 | as_integer() documents panic behavior | `test_as_integer_panic_on_none` | ✅ COVERED |
| AC3 | All existing tests pass | Full suite: 344/344 passed | ✅ PASSED |
| AC4 | No compilation errors/warnings | 0 new warnings/errors | ✅ PASSED |

### Edge Cases Covered

All edge cases are now covered with comprehensive tests:
- Copy semantics for Integer values ✅
- Copy semantics for None values ✅
- Panic behavior on as_integer(None) with exact message ✅
- Binary operations with None (all combinations) ✅
- Unary operations with None (all operators) ✅
- Display formatting for None ✅
- Equality semantics for None ✅

## Conclusion

**Result**: ✅ **PASS**

All acceptance criteria are met:
1. Copy trait successfully added to Value enum
2. as_integer() panic behavior is documented and tested
3. All 344 existing tests pass without modification
4. No new compilation errors or warnings introduced

The implementation is complete, correct, and all tests validate the expected behavior.
