tldr/pages/common/jest.md

jest

A zero-configuration JavaScript testing platform. More information: https://jestjs.io.

• Run all available tests:

jest

• Run the test suites from the given files:

jest {{path/to/file1}} {{path/to/file2}}

• Run the test suites from files within the current and subdirectories, whose paths match the given regular expression:

jest {{regular_expression1}} {{regular_expression2}}

• Run the tests whose names match the given regular expression:

jest --testNamePattern {{regular_expression}}

• Run test suites related to a given source file:

jest --findRelatedTests {{path/to/source_file.js}}

• Run test suites related to all uncommitted files:

jest --onlyChanged

• Watch files for changes and automatically re-run related tests:

jest --watch

• Display help:

jest --help