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Module

x/mock/deps.ts>assertThrows

Utilities to help mock behavior, spy on function calls, stub methods, and fake time for tests.
udibo/mock
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function assertThrows
import { assertThrows } from "https://deno.land/x/mock@0.15.2/deps.ts";

Executes a function, expecting it to throw. 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.

Type Parameters

optional
E extends Error = Error

Parameters

fn: () => unknown
optional
ErrorClass: new (...args: any[]) => E
optional
msgIncludes: string
optional
msg: string

Parameters

fn: () => unknown
errorCallback: (e: Error) => unknown
optional
msg: string