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33 lines
998 B
Markdown
33 lines
998 B
Markdown
# Suggest using `toBeCalledWith()` or `toHaveBeenCalledWith()` (`prefer-called-with`)
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The `toBeCalled()` matcher is used to assert that a mock function has been
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called one or more times, without checking the arguments passed. The assertion
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is stronger when arguments are also validated using the `toBeCalledWith()`
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matcher. When some arguments are difficult to check, using generic match like
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`expect.anything()` at least enforces number and position of arguments.
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This rule warns if the form without argument checking is used, except for `.not`
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enforcing a function has never been called.
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## Rule details
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The following patterns are warnings:
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```js
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expect(someFunction).toBeCalled();
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expect(someFunction).toHaveBeenCalled();
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```
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The following patterns are not warnings:
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```js
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expect(noArgsFunction).toBeCalledWith();
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expect(roughArgsFunction).toBeCalledWith(expect.anything(), expect.any(Date));
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expect(anyArgsFunction).toBeCalledTimes(1);
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expect(uncalledFunction).not.toBeCalled();
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```
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