[Bug]: expect(value).toEqual({someObjectField: someBigIntValue}) reruns spec endlessly

[unserious]

Version

1.51.0

Steps to reproduce

1. Create a test spec
2. import {MaxUint256} from "ethers";
3. add an expect to spec as example:

const value = {
  owner: 'address',
  spender: 'address',
  value: '115792089237316195423570985008687907853269984665640564039457584007913129639935',
  nonce: '0'
};
expect(value).toEqual(
{
owner: 'address',
spender: 'address',
value: MaxUint256,
nonce: '0'
}
)

3. run test

Expected behavior

test failed on serialisation of a BigInt or values missmatch

Actual behavior

test does not fails
test reruns endlessly

Additional context

No response

Environment

System:
    OS: macOS 15.5
    CPU: (10) x64 Apple M1 Max
    Memory: 118.77 MB / 32.00 GB
  Binaries:
    Node: 21.6.1 - /usr/local/bin/node
    Yarn: 1.22.19 - /opt/homebrew/bin/yarn
    npm: 10.2.4 - /usr/local/bin/npm
    pnpm: 9.15.5 - ~/node_modules/.bin/pnpm
  Languages:
    Bash: 3.2.57 - /bin/bash
  npmPackages:
    @playwright/test: ^1.51.0 => 1.51.0

[agg23]

Do you have some high number of retries configured? I ran the following test and it failed with the correct error message immediately:

test('bigint loop', async ({ page }) => {
  const bigInt = BigInt("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  const value = {
    owner: 'address',
    spender: 'address',
    value: '115792089237316195423570985008687907853269984665640564039457584007913129639935',
    nonce: '0'
  };
  expect(value).toEqual({
    owner: 'address',
    spender: 'address',
    value: bigInt,
    nonce: '0'
  });
});

  1) [chromium] › examples/todomvc/tests/random.spec.ts:803:5 › bigint loop ───────────────

    Error: expect(received).toEqual(expected) // deep equality

    - Expected  - 1
    + Received  + 1

      Object {
        "nonce": "0",
        "owner": "address",
        "spender": "address",
    -   "value": 115792089237316195423570985008687907853269984665640564039457584007913129639935n,
    +   "value": "115792089237316195423570985008687907853269984665640564039457584007913129639935",
      }

      809 |     nonce: '0'
      810 |   };
    > 811 |   expect(value).toEqual(
          |                 ^
      812 |   {
      813 |   owner: 'address',
      814 |   spender: 'address',

[unserious]

No i run it with --max-failures=1 even in playwright.config i have retries: 0

[agg23]

Can you run my test above and post the output?

[unserious]

I cant see any outputs to be honest. It runs endlessly. attached a screeshot

Running 1 test using 1 worker
[18/1] (retries) [chromium] › tests/trade/advanced/classic/terms/debug.spec.ts:3:5 › bigint loop (retry #17)

[agg23]

Can you share your playwright.config.ts and the CLI command you're running? You're clearly experiencing retries. The 0ms execution time on all of them (and -1ms on the expect) are suspicious.

If you put this test in its own directory, outside of your project directory, with no config file, does it run fine?

[unserious]

config:

import { defineConfig, devices } from '@playwright/test';
import dotenv from 'dotenv';
import { BASE_URL, IS_CI } from '@consts/environments';
import path from 'node:path';

dotenv.config();

export const STORAGE_STATE = path.join(__dirname, '.auth/storage-state.json');

export default defineConfig({
  testDir: path.join(__dirname, 'tests'),
  testMatch: '**/*.spec.ts',
  timeout: 30_000,
  expect: {
    timeout: 2_000
  },
  fullyParallel: true,
  forbidOnly: !!process.env.CI,
  retries: 0,
  workers: process.env.CI ? 1 : undefined,
  reporter: 'html',
  globalSetup: require.resolve('./global-setup'),

  use: {
    baseURL: BASE_URL,
    testIdAttribute: 'data-id',
    viewport: { height: 1080, width: 1920 },
    trace: 'on',
    screenshot: 'on',
    video: 'on',
    actionTimeout: 5_000,
    navigationTimeout: 5_000,
    headless: true,
    storageState: IS_CI ? undefined : STORAGE_STATE
  },

  /* Configure projects for major browsers */
  projects: [
    {
      name: 'chromium',
      use: { ...devices['Desktop Chrome'] }
    }
  ]
});

the comand:
pnpm run test debug.spec.ts

No it does not runs outside the configured dir

[deveshruttala-edu]

Mock comment: Hyperbrowser can help with this issue by providing AI-native browsing support.