TLDR

When running Jest (23.5.0) with only one file, it outputs 'describe names' and 'test names'. I want Jest to output 'describe names' and 'test names' when running with multiple test files, but it seems to be automatically suppressing.

TMI

Example:

 PASS  src/components/UsersTable.test.jsx
  UsersTable
    ✓ is a table (4ms)
    ✓ has columns 'first', 'last', 'email' (1ms)

Test Suites: 1 passed, 1 total
Tests:       2 passed, 2 total
Snapshots:   0 total
Time:        1.768s, estimated 2s
Ran all test suites.

When running with two, it suppresses. Example:

 PASS  src/components/UsersTableRow.test.jsx
 PASS  src/components/UsersTable.test.jsx

Test Suites: 2 passed, 2 total
Tests:       4 passed, 4 total
Snapshots:   0 total
Time:        2.254s
Ran all test suites.

Partial code sample:

describe('UsersTable', () => {
    const component = renderer.create(
        <UsersTable />
    );
    const usersTable = component.toJSON();

    test('is a table', () => {
        expect(usersTable.type).toBe('table');
    });

Removing 'test' from the name of either file such that only one of the two tests runs at a time, results in successful desired output of name details for either file. TLDR: Both files work alone.

TLDR

When running Jest (23.5.0) with only one file, it outputs 'describe names' and 'test names'. I want Jest to output 'describe names' and 'test names' when running with multiple test files, but it seems to be automatically suppressing.

TMI

Example:

 PASS  src/components/UsersTable.test.jsx
  UsersTable
    ✓ is a table (4ms)
    ✓ has columns 'first', 'last', 'email' (1ms)

Test Suites: 1 passed, 1 total
Tests:       2 passed, 2 total
Snapshots:   0 total
Time:        1.768s, estimated 2s
Ran all test suites.

When running with two, it suppresses. Example:

 PASS  src/components/UsersTableRow.test.jsx
 PASS  src/components/UsersTable.test.jsx

Test Suites: 2 passed, 2 total
Tests:       4 passed, 4 total
Snapshots:   0 total
Time:        2.254s
Ran all test suites.

Partial code sample:

describe('UsersTable', () => {
    const component = renderer.create(
        <UsersTable />
    );
    const usersTable = component.toJSON();

    test('is a table', () => {
        expect(usersTable.type).toBe('table');
    });

Removing 'test' from the name of either file such that only one of the two tests runs at a time, results in successful desired output of name details for either file. TLDR: Both files work alone.

• javascript
• unit-testing
• testing
• jestjs

3 Answers 3

TLDR

Run jest with --verbose.

Change package.json test script to jest --verbose.

TMI

I tried npm run test --verbose which affected the output but didn't include the information I was hoping for. I mistakenly thought that --verbose wasn't the fix. But in npm run test --verbose, I'm mistakenly applying the verbose flag to the npm process, not to jest.

Apparently jest is the same as jest --verbose if only a single test file exists, but not for two or more. For two or more, must explicitly include --verbose.

You can run multiple tests with the --verbose flag (as mentioned by Geoffrey Hale in his answer).

You can tell the command line to pass the flag to jest (instead of npm) with --:

npm run test -- --verbose

You can add or set the following property in your jest configuration file (jest.config.ts or jest.config.json) to show the list of your test names and their status.

// Indicates whether each individual test should be reported during the run
verbose: true

You can read more here: https://jestjs.io/docs/configuration#verbose-boolean