Assertions Enhancement | Bondar Academy

Lesson Summary

In this lesson, we focus on enhancing our testing framework by creating custom assertions in Playwright. The goal is to improve the default assertions to include log details, which are crucial for effective debugging. Key Improvements Created a new file custom-expect.ts under the utils folder. Extended the base expect functionality to include custom matchers. Developed a should equal assertion that replaces the default toEqual assertion. Implementation Steps Imported the necessary modules and set up the logger instance. Defined the setCustomExpectLogger function to pass the logger instance into custom-expect.ts . Created the shouldEqual function to handle assertions and log details. Implemented a try-catch block to manage assertion results and log errors when assertions fail. Formatted error messages to include logs for better clarity during test failures. Testing the Custom Assertions After implementing the custom assertion, we tested it by replacing toEqual with shouldEqual in our test cases. The tests successfully passed, and when they failed, detailed logs were displayed, enhancing our debugging process. In conclusion, we successfully created a logging-enhanced custom assertion framework, allowing us to capture and report detailed logs during test failures. For further clarification, feel free to reach out via Slack.