1.18.0 • Published 10 months ago
expect-even-more-jest v1.18.0
expect-even-more-jest
What is it?
It's expect-more-jest with even more stuff!
Why?
Because expect-more-jest has most of the things I need, but is missing a few, which I'm not entirely sure would be accepted upstream. This way, I present one package with all the tastiness of expect-more-jest as well as all the useful things that I like!
Ok, so what's in the tin?
First, check out what expect-more-jest supplies Cool, huh?
Now, in addition to that, I've added:
describe(`expect-even-more-jest', () => {
it(`makes your tests and output easier to read as well!`, async () => {
// values
expect(SomeClass).toBeConstructor();
expect(new SomeClass()).toBeA(SomeClass);
// syntactic sugar: better flowing
expect(new ExcitedThing()).toBeAn(ExcitedThing);
// test that a value is not null or undefined
expect(someValue).toExist();
// tests matching properties on two objects
expect({ foo: 1, bar: 2 })
.toIntersectionEqual({ foo: 1, quux: 2 });
// mocks & spies
expect(spyOrMock).toHaveBeenCalledOnce();
expect(spyOrMock).toHaveBeenCalledOnceWith("hello", "world");
// promises
// - completed promises have resolved _or_ rejected
await expect(Promise.resolve()).toBeCompleted();
await expect(Promise.reject()).toBeCompleted();
// test that a promise resolves within a timeframe (defaults to 50 ms)
await expect(Promise.resolve()).toBeResolved("should have resolved", 5000);
// test that a promise rejects within a timeframe (defaults to 50 ms)
await expect(Promise.reject()).toBeRejected("should have rejected", 123);
expect(new Promise(() => {})).toBePromiseLike();
// file system
expect(pathToFile).toBeFile();
expect(pathToFolder).toBeFolder();
// collections
expect([1, 2, 3 ]).toBeEquivalentTo([ 2, 1, 3]);
expect({ foo: 1 }).toHaveKey("foo");
expect({ foo: 1, bar: 2 }).toHaveKeys("foo", "bar");
expect([ 1, 2, 3 ]).toAllMatch(i => i < 4);
// performs deep partial equality testing on elements of an array to find
// the search object, using jasmine.objectContaining (so you don't need
// to match _all_ properties!
expect(arrayOfObjects).toContainElementLike(search);
});
});
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