ask-unit-test-generation（询问单元测试生成）

<critical_constraints> ❌ NO tests without edge cases ❌ NO generic assertions (assertTrue) → use specific (assertEqual, toEqual) ❌ NO test dependencies → each test must be independent ✅ MUST follow Arrange-Act-Assert (AAA) pattern ✅ MUST mock external dependencies (APIs, DB, filesystem) ✅ MUST use descriptive test names (what + expected outcome) </critical_constraints>

<test_categories>

1. Normal cases: typical usage
2. Edge cases: empty, zero, max, boundary
3. Error cases: invalid input, exceptions
4. Type edges: None/null, wrong types
5. Performance: large inputs (if applicable) </test_categories>

def test_edge_empty(self):
    assert func([]) == []

def test_error_raises(self):
    with pytest.raises(ValueError):
        func(invalid)

## JavaScript (Jest)

describe('functionName', () => { it('should return X when Y', () => { expect(func(input)).toBe(expected); });

it('should throw on invalid', () => { expect(() => func(null)).toThrow(TypeError); }); });