Bump jest-when from 2.6.0 to 3.2.1

[dependabot-preview[bot]]

Bumps jest-when from 2.6.0 to 3.2.1.

Release notes

Sourced from jest-when's releases.

v3.2.0

New Feature: Function Matchers

You can now pass a predicate function as a matcher. The function will receive the arg and will be considered a match if the function returns true.

It works with both calledWith and expectCalledWith.

Just wrap any regular function (cannot be a jest mock or spy!) with when.

const mock = jest.fn()
const myFunctionMatcher = when(arg => arg === 'hello' ? true : false)
when(mock).calledWith(myFunctionMatcher).mockReturnValue('x')
expect(mock('hello')).toEqual('x')
expect(mock('bye')).toEqual(undefined)

More Examples

const fn = jest.fn()
// Some predicate functions to be used as arg matchers
const allValuesTrue = when((arg) => Object.values(arg).every(Boolean))
const numberDivisibleBy3 = when((arg) => arg % 3 === 0)
when(fn)
// Pass the predicate functions here as matchers
.calledWith(allValuesTrue, numberDivisibleBy3)
.mockReturnValue('x')
expect(fn({ foo: true, bar: true }, 9)).toEqual('x')
expect(fn({ foo: true, bar: false }, 9)).toEqual(undefined)
expect(fn({ foo: true, bar: true }, 13)).toEqual(undefined)

This should add some really great flexibility and allow for some great custom matcher utils.

For example, you can more easily use jest-when now for mocking your fetch calls for both back or front end testing.

// fetch will come in as a jest mock fn
import fetch from '~/our/companies/fetch.js'
// userService uses the fetch.js file underneath the hood to perform an outward api call
import userService from '~/someService.js'
import _ from 'lodash'
// Here's where we mocked it
</tr></table>

... (truncated)

Commits

• ea49d39 v3.2.1
• 7175ece Fix broken function args
• fb0dbe6 v3.2.0
• 414c2d2 Add np for releases
• 36cd03f Docs for function matchers
• ba0bcd3 Merge remote-tracking branch 'origin/master'
• 6190463 Support function matchers
• ea8f335 Merge pull request #60 from jlissner/patch-1
• f5df9a3 Update README.md
• b415550 Add ThoughtWorks Adopt Badge
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #465.