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.

从服务类签名自动生成构造函数验证测试。 在为新服务创建测试、验证快速失败原则时使用 确保构造函数验证或测试所需参数。分析 服务 __init__ 方法并生成 pytest.raises(ValueError) 测试 对于每个必需的参数。适用于以下 Python 服务类 依赖注入模式。高自动化机会（100+ 测试类 使用此模式）。 来源：dawiddutoit/custom-claude。