3.8 KiB
jest
Run Jest unit tests
Properties
bail
Alias(es): b
Type: number
Exit the test suite immediately after n number of failing tests. (https://jestjs.io/docs/en/cli#bail)
ci
Type: boolean
Whether to run Jest in continuous integration (CI) mode. This option is on by default in most popular CI environments. It will prevent snapshots from being written unless explicitly requested. (https://jestjs.io/docs/en/cli#ci)
clearCache
Type: boolean
Deletes the Jest cache directory and then exits without running tests. Will delete Jest's default cache directory. Note: clearing the cache will reduce performance.
codeCoverage
Type: boolean
Indicates that test coverage information should be collected and reported in the output. (https://jestjs.io/docs/en/cli#coverage)
color
Type: boolean
Forces test results output color highlighting (even if stdout is not a TTY). Set to false if you would like to have no colors. (https://jestjs.io/docs/en/cli#colors)
jestConfig
Type: string
The path of the Jest configuration. (https://jestjs.io/docs/en/configuration)
json
Type: boolean
Prints the test results in JSON. This mode will send all other test output and user messages to stderr. (https://jestjs.io/docs/en/cli#json)
maxWorkers
Alias(es): w
Type: number
Specifies the maximum number of workers the worker-pool will spawn for running tests. This defaults to the number of the cores available on your machine. Useful for CI. (its usually best not to override this default) (https://jestjs.io/docs/en/cli#maxworkers-num)
onlyChanged
Alias(es): o
Type: boolean
Attempts to identify which tests to run based on which files have changed in the current repository. Only works if you're running tests in a git or hg repository at the moment. (https://jestjs.io/docs/en/cli#onlychanged)
outputFile
Type: string
Write test results to a file when the --json option is also specified. (https://jestjs.io/docs/en/cli#outputfile-filename)
passWithNoTests
Type: boolean
Will not fail if no tests are found (for example while using --testPathPattern.) (https://jestjs.io/docs/en/cli#passwithnotests)
runInBand
Alias(es): i
Type: boolean
Run all tests serially in the current process (rather than creating a worker pool of child processes that run tests). This is sometimes useful for debugging, but such use cases are pretty rare. Useful for CI. (https://jestjs.io/docs/en/cli#runinband)
setupFile
Type: string
The name of a setup file used by Jest. (https://jestjs.io/docs/en/configuration#setupfilesafterenv-array)
silent
Type: boolean
Prevent tests from printing messages through the console. (https://jestjs.io/docs/en/cli#silent)
testFile
Type: string
The name of the file to test.
testNamePattern
Alias(es): t
Type: string
Run only tests with a name that matches the regex pattern. (https://jestjs.io/docs/en/cli#testnamepattern-regex)
tsConfig
Type: string
The name of the Typescript configuration file.
updateSnapshot
Alias(es): u
Type: boolean
Use this flag to re-record snapshots. Can be used together with a test suite pattern or with --testNamePattern to re-record snapshot for test matching the pattern. (https://jestjs.io/docs/en/cli#updatesnapshot)
useStderr
Type: boolean
Divert all output to stderr.
watch
Type: boolean
Watch files for changes and rerun tests related to changed files. If you want to re-run all tests when a file has changed, use the --watchAll option. (https://jestjs.io/docs/en/cli#watch)
watchAll
Type: boolean
Watch files for changes and rerun all tests when something changes. If you want to re-run only the tests that depend on the changed files, use the --watch option. (https://jestjs.io/docs/en/cli#watchall)