assertRejects | /dev_deps.ts | typestruct@1.0.0-beta.5

Module

x/typestruct/dev_deps.ts>assertRejects

Composable and checkable JavaScript (and TypeScript) data structure

TomokiMiyauci/typestruct

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function assertRejects

import { assertRejects } from "https://deno.land/x/typestruct@1.0.0-beta.5/dev_deps.ts";

assertRejects(fn: () => PromiseLike<unknown>, msg?: string): Promise<unknown>

Executes a function which returns a promise, expecting it to reject.

assertRejects<E extends Error = Error>(

fn: () => PromiseLike<unknown>,

ErrorClass: new (...args: any[]) => E,

msgIncludes?: string,

msg?: string,

): Promise<E>

Executes a function which returns a promise, expecting it to reject. If it does not, then it throws. An error class and a string that should be included in the error message can also be asserted.

Executes a function which returns a promise, expecting it to reject.

Parameters

fn: () => PromiseLike<unknown>

optional

msg: string

Returns

Promise<unknown>

Executes a function which returns a promise, expecting it to reject. If it does not, then it throws. An error class and a string that should be included in the error message can also be asserted.

Type Parameters

optional

E extends Error = Error

Parameters

fn: () => PromiseLike<unknown>

ErrorClass: new (...args: any[]) => E

optional

msgIncludes: string

optional

msg: string

Returns

Promise<E>