assertFalse | /testing/asserts.ts | std@0.220.1

Module

std/testing/asserts.ts>assertFalse

Deno standard library

denoland/deno_std

assertNotStrictEquals

Spy

spy

Has

The Standard Library has been moved to JSR. See the blog post for details.

function assertFalse

Deprecated

(will be removed after 1.0.0) Import from https://deno.land/std/assert/assert_false.ts instead.

import { assertFalse } from "https://deno.land/std@0.220.1/testing/asserts.ts";

Deprecated

(will be removed after 1.0.0) Import from https://deno.land/std/assert/assert_false.ts instead.

assertFalse(expr: unknown, msg?): asserts expr is Falsy

Make an assertion, error will be thrown if expr have truthy value.

Examples

Example 1

import { assertFalse } from "https://deno.land/std@0.220.1/testing/asserts.ts";

assertFalse(false); // Doesn't throw
assertFalse(true); // Throws

Parameters

expr: unknown

optional

msg = [UNSUPPORTED]

Returns

asserts expr is Falsy