jest-retry-all-hooks
v1.0.1
Published
Patch `beforeAll` and `afterAll` hooks to work with `jest.retryTimes`.
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jest-retry-all-hooks
Patch beforeAll
and afterAll
hooks to work with jest.retryTimes
.
Motivation
jest.retryTimes(1);
beforeAll(() => {
// This is a part of a root or a nested describe block, and it is not retried normally.
});
test('test', () => {
// The tests and their `beforeEach` and `afterEach` hooks are retried.
});
afterAll(() => {
// This is a part of a root or a nested describe block, and it is not retried normally.
});
So, what does this library do? It converts beforeAll
and afterAll
hooks to
smart beforeEach
and afterEach
hooks, which usually run only once, but
if a test fails with an error, here is what happens:
jest.retryTimes(1);
beforeEach(() => {
// if never ran before, run a function passed to `beforeAll`
// if previous test failed, run that function again
});
test('test', () => {
// The behavior `test`, `beforeEach`, `afterEach` stays the same.
});
afterEach(() => {
// if the test function or preceeding hooks failed, run a function passed to `afterAll`
});
afterAll(() => {
// if never ran before, run a function passed to `afterAll`
});
See the tests/hooks.ts for an elaborate example of how it works:
B b -1 a A
B b -2 a A
B b 3 a
b 1 a
b -2 a A
B b 2 a A
The example above demonstrates how jest.retryTimes(2)
will work with the
patched beforeAll
(B), beforeEach
(b), afterEach
(a), and afterAll
(A) hooks and
flaky tests (1, 2, 3), where negative numbers indicate failures, and positive
numbers indicate successes.
Please note that the patched beforeAll
and afterAll
hooks won't be associated with
describe blocks, so they will be executed whenever a test fails, even if the afterAll
hook seems to be outside the describe block.
Installation
Install the package:
npm install --save-dev jest-retry-all-hooks
Add to your jest.config.js
:
- testEnvironment: 'node',
+ testEnvironment: 'jest-environment-emit/node',
+ testEnvironmentOptions: {
+ eventListeners: [
+ 'jest-retry-all-hooks',
+ ],
+ },
If you don't have jest-enviroment-emit
installed, you can install it:
npm install --save-dev jest-environment-emit
You can also use any other test environment compatible with jest-environment-emit
, e.g.:
- jest-environment-emit/jsdom
- jest-metadata/environment-node
- jest-metadata/environment-jsdom
- jest-allure2-reporter/environment-node
- jest-allure2-reporter/environment-jsdom
- detox/runners/jest/testEnvironment
Use GitHub Topic Search to find more compatible test environments.
License
Licensed under the MIT License.