Creating JavaScript Unit Tests
CLion integrates with most popular JavaScript unit testing frameworks and provides rich coding assistance for writing JavaScript unit tests. To get framework-aware coding assistance, download the desired framework and configure it as a CLion JavaScript library.
Create JavaScript unit tests
Create a separate folder for tests () next to the src folder. The name of this folder depends on the test framework you are using.
Mark tests as a test source folder.
For each production file, create a separate test file by choosing ( on the context menu of the folder for tests. The format of the test file name depends on the test framework you are using.
10 March 2026