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std/expect/_to_have_returned_with_test.ts

Deno standard library
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// Copyright 2018-2023 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().toHaveReturnedWith()", () => {  const mockFn = fn((x: number) => ({ foo: x + 1 }));
  mockFn(5);  mockFn(6);
  expect(mockFn).toHaveReturnedWith({ foo: 7 });
  expect(mockFn).not.toHaveReturnedWith({ foo: 5 });
  assertThrows(() => {    expect(mockFn).toHaveReturnedWith({ foo: 5 });  }, AssertionError);
  assertThrows(() => {    expect(mockFn).not.toHaveReturnedWith({ foo: 7 });  }, AssertionError);});