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std/expect/_to_be_test.ts

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().toBe()", () => { const obj = {}; expect(1).toBe(1); expect("hello").toBe("hello"); expect(obj).toBe(obj);
expect(1).not.toBe(2); expect("hello").not.toBe("world"); expect(obj).not.toBe({});
assertThrows(() => { expect(1).toBe(2); }, AssertionError); assertThrows(() => { expect("hello").toBe("world"); }, AssertionError); assertThrows(() => { expect(obj).toBe({}); }, AssertionError);
assertThrows(() => { expect(1).not.toBe(1); }, AssertionError); assertThrows(() => { expect("hello").not.toBe("hello"); }, AssertionError); assertThrows(() => { expect(obj).not.toBe(obj); }, AssertionError);
class A {} class B {} expect(new A()).not.toBe(new B()); assertThrows(() => { expect(new A()).toBe(new B()); }, AssertionError);});