assertRejects | /test_deps.ts | test_suite@0.16.1

function assertRejects

import { assertRejects } from "https://deno.land/x/test_suite@0.16.1/test_deps.ts";

assertRejects<E extends Error = Error>(

fn: () => Promise<unknown>,

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

msgIncludes?: string,

msg?: string,

): Promise<void>

Executes a function which returns a promise, expecting it to throw or 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. Or you can pass a callback which will be passed the error, usually to apply some custom assertions on it.

assertRejects(

fn: () => Promise<unknown>,

errorCallback: (e: Error) => unknown,

msg?: string,

): Promise<void>