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std/expect/_to_be_instance_of_test.ts

The Deno Standard Library
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { expect } from "./expect.ts";import { AssertionError, assertThrows } from "../assert/mod.ts";
Deno.test("expect().toBeInstanceOf()", () => {  expect(new Error()).toBeInstanceOf(Error);  expect(new Error()).toBeInstanceOf(Object);
  expect(new Error()).not.toBeInstanceOf(String);
  assertThrows(() => {    expect(new Error()).toBeInstanceOf(String);  }, AssertionError);
  assertThrows(() => {    expect(new Error()).not.toBeInstanceOf(Error);  }, AssertionError);  assertThrows(() => {    expect(new Error()).not.toBeInstanceOf(Object);  }, AssertionError);});