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33 lines
674 B
33 lines
674 B
# Suggest using `toHaveLength()` (`prefer-to-have-length`) |
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In order to have a better failure message, `toHaveLength()` should be used upon |
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asserting expectations on objects length property. |
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## Rule details |
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This rule triggers a warning if `toBe()`, `toEqual()` or `toStrictEqual()` is |
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used to assert objects length property. |
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```js |
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expect(files.length).toBe(1); |
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``` |
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This rule is enabled by default. |
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### Default configuration |
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The following patterns are considered warnings: |
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```js |
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expect(files.length).toBe(1); |
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expect(files.length).toEqual(1); |
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expect(files.length).toStrictEqual(1); |
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``` |
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The following pattern is not warning: |
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```js |
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expect(files).toHaveLength(1); |
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```
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