Function marbleTest

marbleTest<T>(callback): (() => T)

A helper to take some boilerplate out of RxJS's marble testing API.

it("doubles numbers", marbleTest(({ cold, expectObservable }) => {
  const source = cold("-1-2-3-|");
  const expected = "   -2-4-6-|");
  expectObservable(source.pipe(double())).toBe(expected);
}));

Type Parameters

T

Parameters

callback: Callback<T>

Returns (() => T)

- (): T
- Returns T