How to test an exception was not thrown with Jest?

The Jest docs do not demonstrate a way of asserting that no exception was thrown, only that one was.

expect(() => ...error...).toThrow(error)

How do I assert if one was not thrown?

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最佳答案

You can always use the .not method, which will be valid if your initial condition is false. It works for every jest test:

expect(() => ...error...).not.toThrow(error)

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In my case the function being tested was asynchronous and I needed to do further testing after calling it, so I ended up with this:

await expect(
foo(params),
).resolves.not.toThrowError();


// My other expects...