std/expect/_to_be_nan_test.ts
2024-04-29 11:57:30 +09:00

19 lines
420 B
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { expect } from "./expect.ts";
import { AssertionError, assertThrows } from "@std/assert";
Deno.test("expect().toBeNaN()", () => {
expect(NaN).toBeNaN();
expect(1).not.toBeNaN();
assertThrows(() => {
expect(1).toBeNaN();
}, AssertionError);
assertThrows(() => {
expect(NaN).not.toBeNaN();
}, AssertionError);
});