jest-failure-reporter

Custom reporter for jest

Show failed tests and retry commands, like Rspec.

Installation

``shell
yarn add --dev jest-failure-reporter
`

Usage

Add to jest config or package.json. I recommend using it with the default reporter.

`json
// package.json
{
"jest": {
"reporter": ["default", "jest-failure-reporter"]
}
}
`

Options

- retryCommand: If specified, you can change the command prefix. The default is yarn test.

`json
// package.json
{
"jest": {
"reporter": [
"default",
[
"jest-failure-reporter",
{
"retryCommand": "jest"
}
]
]
}
}
`

Example

`shell
$ cd example
$ yarn
$ npx jest test.js
FAIL ./test.js
success
✓ two plus two is four (2ms)
failure
✕ two plus two is five (2ms)
✕ two plus two is six (1ms)

● failure › two plus two is five

expect(received).toBe(expected) // Object.is equality

Expected: 5
Received: 4

7 | describe('failure', () => {
8 | it('two plus two is five', () => {
> 9 | expect(2 + 2).toBe(5)
| ^
10 | })
11 | it('two plus two is six', () => {
12 | expect(2 + 2).toBe(6)

at Object.it (test.js:9:19)

● failure › two plus two is six

expect(received).toBe(expected) // Object.is equality

Expected: 6
Received: 4

10 | })
11 | it('two plus two is six', () => {
> 12 | expect(2 + 2).toBe(6)
| ^
13 | })
14 | })
15 |

at Object.it (test.js:12:19)

Test Suites: 1 failed, 1 total
Tests: 2 failed, 1 passed, 3 total
Snapshots: 0 total
Time: 1.135s
Ran all test suites matching /test.js/i.
./test.js
npx jest ./test.js -t "failure two plus two is five"
npx jest ./test.js -t "failure two plus two is six"
`

Additional output by jest-failure-reporter is the last three lines.

`text
./test.js
npx jest ./test.js -t "failure two plus two is five"
npx jest ./test.js -t "failure two plus two is six"
``