How to test an exception was not thrown with Jest?

JavascriptUnit TestingError HandlingJestjs

Javascript Problem Overview

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?

Javascript Solutions

Solution 1 - Javascript

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)

https://jestjs.io/docs/expect#not

Solution 2 - Javascript

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...
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Content TypeOriginal AuthorOriginal Content on Stackoverflow
Questionuser9993View Question on Stackoverflow
Solution 1 - JavascriptAxnyffView Answer on Stackoverflow
Solution 2 - JavascriptCamiloView Answer on Stackoverflow