@nrwl/jest:jest
Run Jest unit tests
Options can be configured in angular.json when defining the executor, or when invoking it. Read more about how to configure targets and executors here: https://nx.dev/core-concepts/configuration#targets.
Options
jestConfig (required)
Type: string
The path of the Jest configuration. (https://jestjs.io/docs/en/configuration)
bail
Alias(es): b
Type: number | boolean
Exit the test suite immediately after n number of failing tests. (https://jestjs.io/docs/cli#--bail)
changedSince
Type: string
Runs tests related to the changes since the provided branch or commit hash. If the current branch has diverged from the given branch, then only changes made locally will be tested. (https://jestjs.io/docs/cli#--changedsince)
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/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
Alias(es): coverage
Type: boolean
Indicates that test coverage information should be collected and reported in the output. (https://jestjs.io/docs/cli#--coverageboolean)
color
Alias(es): colors
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/cli#--colors)
colors
Type: boolean
Forces test results output highlighting even if stdout is not a TTY. (https://jestjs.io/docs/cli#--colors)
config
Type: string
The path to a Jest config file specifying how to find and execute tests. If no rootDir is set in the config, the directory containing the config file is assumed to be the rootDir for the project. This can also be a JSON-encoded value which Jest will use as configuration
coverageDirectory
Type: string
The directory where Jest should output its coverage files.
coverageReporters
Type: array
A list of reporter names that Jest uses when writing coverage reports. Any istanbul reporter
detectOpenHandles
Type: boolean
Attempt to collect and print open handles preventing Jest from exiting cleanly (https://jestjs.io/docs/cli#--detectopenhandles)
findRelatedTests
Type: string
Find and run the tests that cover a comma separated list of source files that were passed in as arguments. (https://jestjs.io/docs/cli#--findrelatedtests-spaceseparatedlistofsourcefiles)
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/cli#--json)
maxWorkers
Alias(es): w
Type: number | string
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/cli#--maxworkersnumstring)
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/cli#--onlychanged)
outputFile
Type: string
Write test results to a file when the --json option is also specified. (https://jestjs.io/docs/cli#--outputfilefilename)
passWithNoTests
Type: boolean
Will not fail if no tests are found (for example while using --testPathPattern.) (https://jestjs.io/docs/cli#--passwithnotests)
reporters
Type: array
Run tests with specified reporters. Reporter options are not available via CLI. Example with multiple reporters: jest --reporters="default" --reporters="jest-junit" (https://jestjs.io/docs/cli#--reporters)
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/cli#--runinband)
setupFile
Type: string
Deprecated: The name of a setup file used by Jest. (use Jest config file https://jestjs.io/docs/en/configuration#setupfilesafterenv-array)
showConfig
Type: boolean
Print your Jest config and then exits. (https://jestjs.io/docs/en/cli#--showconfig)
silent
Type: boolean
Prevent tests from printing messages through the console. (https://jestjs.io/docs/cli#--silent)
testFile
Type: string
The name of the file to test.
testLocationInResults
Type: boolean
Adds a location field to test results. Used to report location of a test in a reporter. { "column": 4, "line": 5 } (https://jestjs.io/docs/cli#--testlocationinresults)
testNamePattern
Alias(es): t
Type: string
Run only tests with a name that matches the regex pattern. (https://jestjs.io/docs/cli#--testnamepatternregex)
testPathIgnorePatterns
Type: array
An array of regexp pattern strings that is matched against all tests paths before executing the test. Only run those tests with a path that does not match with the provided regexp expressions. (https://jestjs.io/docs/cli#--testpathignorepatternsregexarray)
testPathPattern
Type: array
An array of regexp pattern strings that is matched against all tests paths before executing the test. (https://jestjs.io/docs/cli#--testpathpatternregex)
testResultsProcessor
Type: string
Node module that implements a custom results processor. (https://jestjs.io/docs/en/configuration#testresultsprocessor-string)
testTimeout
Type: number
Default timeout of a test in milliseconds. Default value: 5000. (https://jestjs.io/docs/cli#--testtimeoutnumber)
tsConfig
Type: string
Deprecated: The name of the Typescript configuration file. Set the tsconfig option in the jest config 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/cli#--updatesnapshot)
useStderr
Type: boolean
Divert all output to stderr.
verbose
Type: boolean
Display individual test results with the test suite hierarchy. (https://jestjs.io/docs/cli#--verbose)
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/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/cli#--watchall)