test-validity-checkerlisted

# Test Validity Checker Auto-validates that tests are meaningful and catch real bugs. ## Activation Triggers This skill activates when: - Writing test files - Before pytest execution - When test coverage is checked - When dev loop is running ## Validity Checks ### Check 1: Empty Test Detection ```python # INVALID - Empty body def test_user(): pass # INVALID - Only setup, no assertions def test_create(): user = create_user() # No assertions! # VALID def test_user_creation(): user = create_user() assert user.id is not None assert user.is_active ``` **Action**: Flag empty tests, require assertions ### Check 2: Trivial Assertion Detection ```python # INVALID - Always passes def test_always_passes(): assert True def test_truthy(): user = create_user() assert user # Just checks existence # INVALID - Testing constants def test_constant(): assert 1 + 1 == 2 # VALID - Tests actual behavior def test_user_email_lowercase(): user = create_user(email='TEST@Example.COM') assert user.email == 'test@example.com' ``` **Action**: Require value comparisons, not just truthiness ### Check 3: Assertion Count ```python # WEAK - Only 1 assertion def test_single_assertion(): response = client.get('/api/users/') assert response.status_code == 200 # STRONG - Multiple assertions def test_list_users(): response = client.get('/api/users/') assert response.status_code == 200 assert 'results' in response.data assert l