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30 lines
735 B
30 lines
735 B
2 years ago
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# Suggest using the built-in equality matchers (`prefer-equality-matcher`)
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Jest has built-in matchers for expecting equality which allow for more readable
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tests and error messages if an expectation fails.
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## Rule details
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This rule checks for _strict_ equality checks (`===` & `!==`) in tests that
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could be replaced with one of the following built-in equality matchers:
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- `toBe`
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- `toEqual`
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- `toStrictEqual`
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Examples of **incorrect** code for this rule:
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```js
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expect(x === 5).toBe(true);
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expect(name === 'Carl').not.toEqual(true);
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expect(myObj !== thatObj).toStrictEqual(true);
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```
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Examples of **correct** code for this rule:
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```js
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expect(x).toBe(5);
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expect(name).not.toEqual('Carl');
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expect(myObj).toStrictEqual(thatObj);
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```
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