Module

std/testing/snapshot.ts

Deno standard library
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function assertSnapshot
import { assertSnapshot } from "https://deno.land/std@0.146.0/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. For example:

import { assertSnapshot } from "./snapshot.ts";

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

Returns

Promise<void>

Parameters

actual: T
optional
message: string

Returns

Promise<void>

Parameters

actual: unknown
optional
msgOrOpts: string | SnapshotOptions<unknown>

Returns

Promise<void>