This PR adds comprehensive tests for the Checks class, which is the core component of the action but previously had minimal test coverage (~6.95%).

Testing Approach

The new test file __tests__/checks/checks.test.ts includes:

• Unit tests for all public methods in the Checks class
• Coverage of various configuration options and their effects
• Mocking of external dependencies (GitHub API, core actions)
• Verification of error handling paths

Test Coverage

The PR increases test coverage for the Checks class from 6.95% to 99.13%, ensuring the robustness of the action's core functionality.

The tests verify:

• Proper initialization of class properties
• Correct API call handling
• Filtering of checks based on inclusion/exclusion rules
• Status evaluation logic under different configurations
• Polling behavior with various conditions
• Report generation and error handling

Benefits

• Identifies any regressions in future updates
• Documents expected behavior of various configuration options
• Makes the codebase more maintainable

Fixes #85.

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.