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25 lines
710 B
Markdown
25 lines
710 B
Markdown
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# Suggest using `toStrictEqual()` (`prefer-strict-equal`)
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`toStrictEqual` not only checks that two objects contain the same data but also
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that they have the same structure. It is common to expect objects to not only
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have identical values but also to have identical keys. A stricter equality will
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catch cases where two objects do not have identical keys.
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## Rule details
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This rule triggers a warning if `toEqual()` is used to assert equality.
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### Default configuration
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The following pattern is considered warning:
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```js
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expect({ a: 'a', b: undefined }).toEqual({ a: 'a' }); // true
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```
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The following pattern is not warning:
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```js
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expect({ a: 'a', b: undefined }).toStrictEqual({ a: 'a' }); // false
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```
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