Implement Constructor Validation Tests

Purpose

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.

When to Use

Use this skill when:

• Creating tests for new services - Generating constructor validation tests automatically
• Validating fail-fast principle - Ensuring services validate required parameters
• Testing constructor validation - Verifying services raise ValueError for None parameters
• Testing required parameters - Validating each required parameter has proper validation
• Following TDD workflow - Creating tests before or alongside service implementation
• Automating test generation - Reducing manual boilerplate for repetitive test patterns