Tips, Tricks, and Techniques for Node.js Development 4.4: Code Coverage

The video tutorial explores the use of Istanbul for measuring code coverage. It covers the installation and execution of tests using Istanbul, generating HTML reports, and understanding the limitations of code coverage as a measure of code quality. The tutorial also demonstrates how to exclude certain files from coverage, re-run tests, and improve test coverage by writing effective tests. Additionally, it discusses refactoring code to make it more testable and concludes with a preview of browser automated testing.

What is the main purpose of using Istanbul as a code coverage tool?

Explain why high code coverage does not guarantee high test quality.

What steps are involved in installing Istanbul in a project?

What does a coverage report indicate about the code?

How can you exclude specific folders from code coverage reports?

Describe the importance of writing tests for functions that are not being called.

What modifications can be made to improve the testability of code?