Sometimes, we want to check multiple arguments on multiple calls for Jest spies with JavaScript.
In this article, we’ll look at how to check multiple arguments on multiple calls for Jest spies with JavaScript.
How to check multiple arguments on multiple calls for Jest spies with JavaScript?
To check multiple arguments on multiple calls for Jest spies with JavaScript, we can use the mockFn.mock.calls property.
For instance, we write
expect(mockFn.mock.calls).toEqual([
[arg1, arg2],
[arg1, arg2],
]);
to call expect with mockFn.mock.calls to get the arguments that mockFn is called with.
Then we call toEqual with a nested array that has the array of arguments for each call of mockFn to check if they match what we expect.
Conclusion
To check multiple arguments on multiple calls for Jest spies with JavaScript, we can use the mockFn.mock.calls property.
