mirror of
https://github.com/joelwmale/webhook-action.git
synced 2024-08-25 08:08:00 +00:00
100 lines
2.0 KiB
Markdown
100 lines
2.0 KiB
Markdown
# Suggest using `expect.assertions()` OR `expect.hasAssertions()` (`prefer-expect-assertions`)
|
|
|
|
Ensure every test to have either `expect.assertions(<number of assertions>)` OR
|
|
`expect.hasAssertions()` as its first expression.
|
|
|
|
## Rule details
|
|
|
|
This rule triggers a warning if,
|
|
|
|
- `expect.assertions(<number of assertions>)` OR `expect.hasAssertions()` is not
|
|
present as first statement in a test, e.g.:
|
|
|
|
```js
|
|
test('my test', () => {
|
|
expect(someThing()).toEqual('foo');
|
|
});
|
|
```
|
|
|
|
- `expect.assertions(<number of assertions>)` is the first statement in a test
|
|
where argument passed to `expect.assertions(<number of assertions>)` is not a
|
|
valid number, e.g.:
|
|
|
|
```js
|
|
test('my test', () => {
|
|
expect.assertions('1');
|
|
expect(someThing()).toEqual('foo');
|
|
});
|
|
```
|
|
|
|
### Default configuration
|
|
|
|
The following patterns are considered warnings:
|
|
|
|
```js
|
|
test('my test', () => {
|
|
expect.assertions('1');
|
|
expect(someThing()).toEqual('foo');
|
|
});
|
|
|
|
test('my test', () => {
|
|
expect(someThing()).toEqual('foo');
|
|
});
|
|
```
|
|
|
|
The following patterns would not be considered warnings:
|
|
|
|
```js
|
|
test('my test', () => {
|
|
expect.assertions(1);
|
|
expect(someThing()).toEqual('foo');
|
|
});
|
|
|
|
test('my test', () => {
|
|
expect.hasAssertions();
|
|
expect(someThing()).toEqual('foo');
|
|
});
|
|
```
|
|
|
|
## Options
|
|
|
|
#### `onlyFunctionsWithAsyncKeyword`
|
|
|
|
When `true`, this rule will only warn for tests that use the `async` keyword.
|
|
|
|
```json
|
|
{
|
|
"rules": {
|
|
"jest/prefer-expect-assertions": [
|
|
"warn",
|
|
{ "onlyFunctionsWithAsyncKeyword": true }
|
|
]
|
|
}
|
|
}
|
|
```
|
|
|
|
When `onlyFunctionsWithAsyncKeyword` option is set to `true`, the following
|
|
pattern would be a warning:
|
|
|
|
```js
|
|
test('my test', async () => {
|
|
const result = await someAsyncFunc();
|
|
expect(result).toBe('foo');
|
|
});
|
|
```
|
|
|
|
While the following patterns would not be considered warnings:
|
|
|
|
```js
|
|
test('my test', () => {
|
|
const result = someFunction();
|
|
expect(result).toBe('foo');
|
|
});
|
|
|
|
test('my test', async () => {
|
|
expect.assertions(1);
|
|
const result = await someAsyncFunc();
|
|
expect(result).toBe('foo');
|
|
});
|
|
```
|