webhook-action/node_modules/eslint-plugin-jest/docs/rules/valid-expect-in-promise.md
2022-11-10 20:43:16 +10:00

78 lines
2.1 KiB
Markdown

# Require promises that have expectations in their chain to be valid (`valid-expect-in-promise`)
💼 This rule is enabled in the ✅ `recommended`
[config](https://github.com/jest-community/eslint-plugin-jest/blob/main/README.md#shareable-configurations).
<!-- end auto-generated rule header -->
Ensure promises that include expectations are returned or awaited.
## Rule details
This rule flags any promises within the body of a test that include expectations
that have either not been returned or awaited.
The following patterns is considered warning:
```js
it('promises a person', () => {
api.getPersonByName('bob').then(person => {
expect(person).toHaveProperty('name', 'Bob');
});
});
it('promises a counted person', () => {
const promise = api.getPersonByName('bob').then(person => {
expect(person).toHaveProperty('name', 'Bob');
});
promise.then(() => {
expect(analytics.gottenPeopleCount).toBe(1);
});
});
it('promises multiple people', () => {
const firstPromise = api.getPersonByName('bob').then(person => {
expect(person).toHaveProperty('name', 'Bob');
});
const secondPromise = api.getPersonByName('alice').then(person => {
expect(person).toHaveProperty('name', 'Alice');
});
return Promise.any([firstPromise, secondPromise]);
});
```
The following pattern is not warning:
```js
it('promises a person', async () => {
await api.getPersonByName('bob').then(person => {
expect(person).toHaveProperty('name', 'Bob');
});
});
it('promises a counted person', () => {
let promise = api.getPersonByName('bob').then(person => {
expect(person).toHaveProperty('name', 'Bob');
});
promise = promise.then(() => {
expect(analytics.gottenPeopleCount).toBe(1);
});
return promise;
});
it('promises multiple people', () => {
const firstPromise = api.getPersonByName('bob').then(person => {
expect(person).toHaveProperty('name', 'Bob');
});
const secondPromise = api.getPersonByName('alice').then(person => {
expect(person).toHaveProperty('name', 'Alice');
});
return Promise.allSettled([firstPromise, secondPromise]);
});
```