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std/expect/_to_contain_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().toContain()", () => { const arr = [1, 2, 3];
expect(arr).toContain(2); expect("foobarbaz").toContain("bar");
expect(arr).not.toContain(4); expect("foobarbaz").not.toContain("qux");
assertThrows(() => { expect(arr).toContain(4); }, AssertionError); assertThrows(() => { expect("foobarbaz").toContain("qux"); }, AssertionError);
assertThrows(() => { expect(arr).not.toContain(2); }, AssertionError); assertThrows(() => { expect("foobarbaz").not.toContain("bar"); }, AssertionError);});