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TL;DR

mocha

A feature-rich JavaScript test framework. More information: https://mochajs.org.

  • Run tests with default configuration or as configured in mocha.opts:

mocha

  • Run tests contained at a specific location:

mocha directory/with/tests

  • Run tests that match a specific grep pattern:

mocha --grep regular_expression

  • Run tests on changes to JavaScript files in the current directory and once initially:

mocha --watch

  • Run tests with a specific reporter:

mocha --reporter reporter

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