Disabling the 'Your test suite must contain at least one test' rule in Jest

Question

Jest has a 'Your test suite must contain at least one test.' rule. It complains that if I have a file that isn't a test suite it cannot exist in the __test__/ directory that I have created (see below). This basically means everything in that folder (including the subfolders) must be a test suite.

How do I get around this? I really want to store my mock data objects with my test suites.

Answer 1

Calling skip in your test utility file will suppress that rule violation:

test.skip('Workaround', () => 1)

Adding this for completeness. Brian's testMatch/testRegex solution seems more clean to me.

Answer 2

The default glob patterns that Jest uses to find test files are

[ "**/__tests__/**/*.[jt]s?(x)", "**/?(*.)+(spec|test).[jt]s?(x)" ]

In other words...

By default it looks for .js, .jsx, .ts and .tsx files inside of __tests__ folders, as well as any files with a suffix of .test or .spec (e.g. Component.test.js or Component.spec.js). It will also find files called test.js or spec.js.

Because mockData.js is in a subdirectory of __tests__ it is being found by the default glob patterns and assumed to be a test.

To keep Jest from treating mockData.js as a test you can change the glob patterns Jest uses to find tests with the testMatch configuration option, or to use regular expressions instead of glob patterns use testRegex.