github-pages-deploy-action/node_modules/eslint-plugin-jest/docs/rules/valid-expect-in-promise.md
James Ives 5af4d9fc85 3.5.0 🎉
2020-05-14 17:33:08 -04:00

34 lines
684 B
Markdown

# Enforce having return statement when testing with promises (`valid-expect-in-promise`)
Ensure to return promise when having assertions in `then` or `catch` block of
promise
## Rule details
This rule triggers a warning if,
- test is having assertions in `then` or `catch` block of a promise
- and that promise is not returned from the test
### Default configuration
The following pattern is considered warning:
```js
it('promise test', () => {
somePromise.then(data => {
expect(data).toEqual('foo');
});
});
```
The following pattern is not warning:
```js
it('promise test', () => {
return somePromise.then(data => {
expect(data).toEqual('foo');
});
});
```