deno.land / std@0.224.0 / expect / _to_have_nth_returned_with_test.ts

_to_have_nth_returned_with_test.ts
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { expect } from "./expect.ts";import { fn } from "./fn.ts";import { AssertionError, assertThrows } from "../assert/mod.ts";
Deno.test("expect().toHaveNthReturnedWith()", () => { const mockFn = fn((x: number) => x + 7);
mockFn(1); mockFn(10); mockFn(100); mockFn(1000);
expect(mockFn).toHaveNthReturnedWith(1, 8); expect(mockFn).toHaveNthReturnedWith(2, 17); expect(mockFn).toHaveNthReturnedWith(3, 107); expect(mockFn).toHaveNthReturnedWith(4, 1007);
expect(mockFn).not.toHaveNthReturnedWith(1, 1); expect(mockFn).not.toHaveNthReturnedWith(2, 10); expect(mockFn).not.toHaveNthReturnedWith(3, 100); expect(mockFn).not.toHaveNthReturnedWith(4, 1000);
assertThrows(() => { expect(mockFn).toHaveNthReturnedWith(1, 1); }, AssertionError);
assertThrows(() => { expect(mockFn).not.toHaveNthReturnedWith(1, 8); }, AssertionError);
assertThrows(() => { expect(mockFn).toHaveNthReturnedWith(0, 0); }, Error);});
std

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Tagged at
6 months ago