test-implement-constructor-validation

Automatically generate comprehensive constructor validation tests for service classes that follow the fail-fast principle. This skill ensures every required parameter has a corresponding test that validates the service raises ValueError when that parameter is None.

Fixture Exclusion Pattern: Each validation test excludes the fixture for the parameter being tested:

For a complex service with 5 parameters, follow the same pattern as Example 1 above. Create a test class with fixtures for each parameter, a success case test, and one validation failure test for each required parameter. See references/reference.md for detailed pattern analysis and edge cases.

從服務類別簽章自動產生建構函式驗證測試。 在為新服務建立測試、驗證快速失敗原則時使用 確保建構函式驗證或測試所需參數。分析 服務 __init__ 方法並產生 pytest.raises(ValueError) 測試 對於每個必需的參數。適用於以下 Python 服務類 依赖注入模式。高自動化機會（100+ 測試類 使用此模式）。 來源：dawiddutoit/custom-claude。