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test() Documentation

Runs a one-time pass of the specified modes of tests, returning a Promise indicating whether the test run succeeded or failed.

NOTE: test() assumes your source files live within the src/ folder of the current working directory where the script is being called.

Looking for CLI docs? View companion benmvp test documentation.

Examples

To run all modes on all files (default behavior):

import { test } from '@benmvp/cli'

test()

To run just unit tests on all files:

import { test } from '@benmvp/cli'

test({
  modes: ['spec'],
})

To run linting & typing on all files:

import { test } from '@benmvp/cli'

test({
  modes: ['lint', 'type'],
})

To run all modes only on files within utils/ directories:

import { test } from '@benmvp/cli'

test({
  pattern: 'utils/',
})

To just run linting on files within api/ directories while continuously watching for changes:

import { test } from '@benmvp/cli'

test({
  modes: ['lint'],
  pattern: 'api/',
  watch: true,
})

Signature

test() has the following TypeScript signature:

type Mode = 'type' | 'lint' | 'spec'
namespace TestOptions {
  modes: Mode[];
  pattern: string;
  watch: boolean;
}

(options?: TestOptions): Promise<Result>

Options

The optional TestOptions object supports the following properties:

modes

An Array of the types or modes of tests to run. Available modes:

  • 'type' - Runs Typescript type-checking (files ending in .ts or .tsx)
  • 'lint' - Runs ESLint (files ending in .ts or .tsx)
  • 'spec' - Runs Jest-based unit tests (files ending in .spec.ts)

Optional. Defaults to all modes when unspecified.

pattern

A regexp pattern string that is matched against all tests paths before executing the test.

Optional. Defaults to '' (signifying no filter)

watch

A flag indicating whether or not to continuously run the tests whenever source files change.

Optional. Defaults to false.

NOTE: Jest Watch Plugins are added to make watch mode even more useful. Specifically the eslint watch-fix plugin is added to enable auto-fixing of lint errors. However, for this to work, 'lint' has to be the first mode when specified.

Return Value

test() returns a Promise.

When test() finishes successfully, the resolved value will be an object with a code property set to 0.

If test() exits unsuccessfully, the resolved value will be an object with a non-zero code property, a user-friendly message property, and an error property pointing to the inner exception.

More help

Looking for CLI docs? View companion benmvp test documentation.

Still unsure of how to use @benmvp/cli? Ask for help!