assert | /testing/asserts.ts | std@0.224.0

Module

std/testing/asserts.ts>assert

The Deno Standard Library

denoland/deno_std

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function assert

Deprecated

This will be removed in 1.0.0. Import from https://deno.land/std/assert/assert.ts instead.

import { assert } from "https://deno.land/std@0.224.0/testing/asserts.ts";

Deprecated

This will be removed in 1.0.0. Import from https://deno.land/std/assert/assert.ts instead.

assert(expr: unknown, msg?): asserts expr

Make an assertion, error will be thrown if expr does not have truthy value.

Examples

Example 1

import { assert } from "https://deno.land/std@0.224.0/testing/asserts.ts";

assert("hello".includes("ello")); // Doesn't throw
assert("hello".includes("world")); // Throws

Parameters

expr: unknown

optional

msg = [UNSUPPORTED]

Returns

asserts expr