Closed
Description
Describe the bug
I have a huge snapshot (38k lines JS Map), when I run vitest in either dev or run modes - it takes insane amount of time to get response, one might think that it just hangs.
Reproduction
My test:
import { it, describe, expect } from "vitest";
describe("something", () => {
it("works", () => {
expect(something()).toMatchSnapshot();
});
});
My snapshot:
// Vitest Snapshot v1
exports[`something > works 1`] = `
Map {
"Cucumber Lebanese" => [
{
"amountPerUnit": 5,
"dateTime": "2020-01-01T01:01:00.000Z",
"item": {
"amount": 1,
"description": "Cucumber Lebanese",
"onSpecial": false,
"productSeries": "Cucumber Lebanese",
"quantity": 1,
},
},
// repeat 3 times
}
],
// repeat 1000 times
When I run tests, I get this:
FAIL util.spec.ts > something > works
AssertionError: Snapshot `something > works 1` mismatched
❯ util.spec.ts:6:42
4| describe("something", () => {
5| it("works", () => {
6| expect(something()).toMatchSnapshot();
| ^
7| });
8| });
and then the process keeps on running while using ~10-20% of CPU.
After a long time I think the process fails with non-zero code without showing diff, but I'm not 100% sure about that.
Might be related to #2008
System Info
System:
OS: Windows 10 10.0.19044
CPU: (20) x64 12th Gen Intel(R) Core(TM) i9-12900H
Memory: 32.59 GB / 63.68 GB
Binaries:
Node: 19.3.0 - ~\AppData\Local\nvs\node\19.3.0\x64\node.EXE
npm: 9.2.0 - ~\AppData\Local\nvs\node\19.3.0\x64\npm.CMD
Browsers:
Edge: Spartan (44.19041.1266.0), Chromium (108.0.1462.76)
Internet Explorer: 11.0.19041.1566Used Package Manager
npm
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