CODEWITHSUNDEEP
javascriptunit-testingjestjs
Juicy
Juicy

Reputation: 12520

expect.toBeDefined() is not a function with expect.toMatchObject()

I want to test that an object returned matches what I expect with jest.

I'm trying this:

const desiredResult = {
  host: '192.168.1.1',
  port: expect.any(Number),
  delta: expect.toBeDefined()
}
expect(result).toMatchObject(desiredResult)

jest is saying that .toBeDefined() is not a function (but is fine with .any(Number):

TypeError: expect.toBeDefined is not a function
  173 |       host: '192.168.1.1',
  174 |       port: expect.any(Number),
> 175 |       delta: expect.toBeDefined()
      |                     ^
  176 |     }
  177 |     expect(portCallback.mock.calls[0][0]).toMatchObject(desiredResult)

ect(desiredResult)

Upvotes: 2

Views: 3540

Answers (1)

PeterDanis
PeterDanis

Reputation: 9326

Use expect.anything() instead of expect.toBeDefined().

It is like expect.any(), but does not require constructor as paramater and matches anything but null or undefined.

Please see https://facebook.github.io/jest/docs/en/expect.html#expectanything

Upvotes: 1

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