deno.land / std@0.224.0 / assert / assert_not_equals.ts

assert_not_equals.ts
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import { CAN_NOT_DISPLAY } from "./_constants.ts";import { equal } from "./equal.ts";import { AssertionError } from "./assertion_error.ts";
/** * Make an assertion that `actual` and `expected` are not equal, deeply. * If not then throw. * * Type parameter can be specified to ensure values under comparison have the same type. * * @example * ```ts * import { assertNotEquals } from "https://deno.land/std@$STD_VERSION/assert/assert_not_equals.ts"; * * assertNotEquals(1, 2); // Doesn't throw * assertNotEquals(1, 1); // Throws * ``` */export function assertNotEquals<T>(actual: T, expected: T, msg?: string) { if (!equal(actual, expected)) { return; } let actualString: string; let expectedString: string; try { actualString = String(actual); } catch { actualString = CAN_NOT_DISPLAY; } try { expectedString = String(expected); } catch { expectedString = CAN_NOT_DISPLAY; } const msgSuffix = msg ? `: ${msg}` : "."; throw new AssertionError( `Expected actual: ${actualString} not to be: ${expectedString}${msgSuffix}`, );}
std

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Tagged at
6 months ago