2020-08-25 23:57:08 +00:00
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# Disallow alias methods (`no-alias-methods`)
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2022-11-10 10:43:16 +00:00
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💼⚠️ This rule is enabled in the ✅ `recommended`
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[config](https://github.com/jest-community/eslint-plugin-jest/blob/main/README.md#shareable-configurations).
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This rule _warns_ in the 🎨 `style`
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[config](https://github.com/jest-community/eslint-plugin-jest/blob/main/README.md#shareable-configurations).
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🔧 This rule is automatically fixable by the
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[`--fix` CLI option](https://eslint.org/docs/latest/user-guide/command-line-interface#--fix).
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<!-- end auto-generated rule header -->
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> These aliases are going to be removed in the next major version of Jest - see
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> <https://github.com/facebook/jest/issues/13164> for more
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2020-08-25 23:57:08 +00:00
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Several Jest methods have alias names, such as `toThrow` having the alias of
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`toThrowError`. This rule ensures that only the canonical name as used in the
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Jest documentation is used in the code. This makes it easier to search for all
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occurrences of the method within code, and it ensures consistency among the
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method names used.
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## Rule details
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This rule triggers a warning if the alias name, rather than the canonical name,
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of a method is used.
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The following patterns are considered warnings:
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```js
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expect(a).toBeCalled();
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expect(a).toBeCalledTimes();
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expect(a).toBeCalledWith();
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expect(a).lastCalledWith();
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expect(a).nthCalledWith();
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expect(a).toReturn();
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expect(a).toReturnTimes();
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expect(a).toReturnWith();
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expect(a).lastReturnedWith();
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expect(a).nthReturnedWith();
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expect(a).toThrowError();
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```
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The following patterns are not considered warnings:
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```js
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expect(a).toHaveBeenCalled();
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expect(a).toHaveBeenCalledTimes();
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expect(a).toHaveBeenCalledWith();
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expect(a).toHaveBeenLastCalledWith();
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expect(a).toHaveBeenNthCalledWith();
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expect(a).toHaveReturned();
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expect(a).toHaveReturnedTimes();
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expect(a).toHaveReturnedWith();
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expect(a).toHaveLastReturnedWith();
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expect(a).toHaveNthReturnedWith();
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expect(a).toThrow();
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```
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