Skip to main content
Deno 2 is finally here 🎉️
Learn more
Go to Latest
The Standard Library has been moved to JSR. See the blog post for details.
function assertSnapshot
import { assertSnapshot } from "https://deno.land/std@0.180.0/testing/snapshot.ts";

Make an assertion that actual matches a snapshot. If the snapshot and actual do not a match, then throw.

Type parameter can be specified to ensure values under comparison have the same type.

Examples

Example 1

import { assertSnapshot } from "https://deno.land/std@0.180.0/testing/snapshot.ts";

Deno.test("snapshot", async (test) => {
 await assertSnapshot<number>(test, 2);
});

Returns

Promise<void>

Parameters

actual: T
optional
message: string

Returns

Promise<void>