# Coverage Report

Total executable lines: 2
Covered lines: 2
Missed lines: 0
Coverage percentage: 100.00%

## Source Code with Coverage

```python
1: ✓ def append(a, b):
2: ✓     return a + [b]
```

## Complete Test File

```python
def append(a, b):
    return a + [b]

def run_tests():
    test_results = []
    # Test case 1
    try:
        result = append([1, 2, 3], 4)
        assert result == [1, 2, 3, 4], f"Test 1 failed: got {result}, expected {[1, 2, 3, 4]}"
        print(f"Test 1 passed")
        test_results.append(True)
    except Exception as e:
        print(f"Test 1 failed: {e}")
        test_results.append(False)

    # Test case 2
    try:
        result = append([], 0)
        assert result == [0], f"Test 2 failed: got {result}, expected {[0]}"
        print(f"Test 2 passed")
        test_results.append(True)
    except Exception as e:
        print(f"Test 2 failed: {e}")
        test_results.append(False)

    # Test case 3
    try:
        result = append([5, 6], -1)
        assert result == [5, 6, -1], f"Test 3 failed: got {result}, expected {[5, 6, -1]}"
        print(f"Test 3 passed")
        test_results.append(True)
    except Exception as e:
        print(f"Test 3 failed: {e}")
        test_results.append(False)

    # Test case 4
    try:
        result = append([0, 0, 0], 1)
        assert result == [0, 0, 0, 1], f"Test 4 failed: got {result}, expected {[0, 0, 0, 1]}"
        print(f"Test 4 passed")
        test_results.append(True)
    except Exception as e:
        print(f"Test 4 failed: {e}")
        test_results.append(False)

    # Test case 5
    try:
        result = append([-2, -3], -4)
        assert result == [-2, -3, -4], f"Test 5 failed: got {result}, expected {[-2, -3, -4]}"
        print(f"Test 5 passed")
        test_results.append(True)
    except Exception as e:
        print(f"Test 5 failed: {e}")
        test_results.append(False)

    return test_results

if __name__ == '__main__':
    results = run_tests()
    print(f"\n{sum(results)}/{len(results)} tests passed")

```
