OptionsOn jest itself
--bail-b
Exit the test suite immediately upon n number of failing test suite. Defaults to 1 <n>
--cache
Whether to use the cache
--no-cache
Whether to use the cache
--changedFilesWithAncestor
Runs tests related to the current changes and the changes made in the last commit
--changedSince
Runs tests related to the changes since the provided branch or commit hash <since>
--ci
Instead of the regular behavior of storing a new snapshot automatically, will fail the test and require Jest to be run with --updateSnapshot
--clearCache
Deletes the Jest cache directory and then exits without running tests <cacheDirectory>
--collectCoverageFrom
A glob pattern relative to rootDir matching the files that coverage info needs to be collected from <glob>
--colors
Forces test results output highlighting even if stdout is not a TTY
--config-c
The path to a Jest config file specifying how to find and execute tests <path>
--coverage
Enable or disable coverage, disabled by default <true|false>
--coverageProvider
Indicates which provider should be used to instrument code for coverage <babel|v8>
--debug
Print debugging info about your Jest config
--detectOpenHandles
Attempt to collect and print open handles preventing Jest from exiting cleanly
--env
The test environment used for all tests <jsdom|node|path/to/env.js>
--errorOnDeprecated
Make calling deprecated APIs throw helpful error messages
--expand-e
Use this flag to show full diffs and errors instead of a patch
--findRelatedTests
Find and run the tests that cover a space separated list of source files that were passed in as arguments <<path1> ... <pathN>>
--forceExit
Force Jest to exit after all tests have completed running
--help
Show the help information
--init
Generate a basic configuration file
--injectGlobals
Insert Jest's globals (expect, test, describe, beforeEach etc.) into the global environment
--json
Prints the test results in JSON
--outputFile
Write test results to a file when the --json option is also specified <filename>
--lastCommit
Run all tests affected by file changes in the last commit made
--listTests
Lists all tests as JSON that Jest will run given the arguments, and exits
--logHeapUsage
Logs the heap usage after every test
--maxConcurrency
Prevents Jest from executing more than the specified amount of tests at the same time <num>
--maxWorkers-w
Specifies the maximum number of workers the worker-pool will spawn for running tests <<num>|<string>>
--noStackTrace
Disables stack trace in test results output
--notify
Activates notifications for test results
--onlyChanged-o
Attempts to identify which tests to run based on which files have changed in the current repository
--passWithNoTests
Allows the test suite to pass when no files are found
--projects
Run tests from one or more projects, found in the specified paths; also takes path globs <<path1> ... <pathN>>
--reporters
Run tests with specified reporters <reporter>
--roots
A list of paths to directories that Jest should use to search for files in <<path1> ... <pathN>>
--runInBand-i
Run all tests serially in the current process, rather than creating a worker pool of child processes that run tests
--selectProjects
Run only the tests of the specified projects <<project1> ... <projectN>>
--runTestsByPath
Run only the tests that were specified with their exact paths
--setupTestFrameworkScriptFile
The path to a module that runs some code to configure or set up the testing framework before each test <file>
--showConfig
Print your Jest config and then exits
--silent
Prevent tests from printing messages through the console
--testNamePattern-t
Run only tests with a name that matches the regex <regex>
--testLocationInResults
Adds a location field to test results
--testPathPattern
A regexp pattern string that is matched against all tests paths before executing the test <regex>
--testPathIgnorePatterns
An array of regexp pattern strings that are tested against all tests paths before executing the test <[array]>
--testRunner
Lets you specify a custom test runner <path>
--testSequencer
Lets you specify a custom test sequencer <path>
--testTimeout
Default timeout of a test in milliseconds <timeout in ms>
--updateSnapshot-u
Use this flag to re-record every snapshot that fails during this test run
--useStderr
Divert all output to stderr
--verbose
Display individual test results with the test suite hierarchy
--version-v
Print the version and exit
--watch
Watch files for changes and rerun tests related to changed files
--watchAll
Watch files for changes and rerun all tests when something changes
--watchman
Whether to use watchman for file crawling
--no-watchman
Whether to use watchman for file crawling
