page is not defined

[FezVrasta]

page is not defined

[FezVrasta]

This is the whole repository, I'm trying to migrate from Puppeteer to Playwright:

https://github.com/popperjs/popper-core/tree/test/playwright

You can find the Jest configuration in the .config folder.

[mmarkelov]

@FezVrasta thank you!

[mmarkelov]

@FezVrasta I just made repo for example configuration. I suppose you need to define jest preset.

• You can add it to your package.json:

  "jest": {
    "preset": "jest-playwright-preset"
  },

• Or you can do it with jest.config.js file:

module.exports = {
    preset: "jest-playwright-preset"
}

I suppose it should be placed in README

[FezVrasta]

That's what I have done.

If I manually apply the globalSetup, globalTeardown and testEnvironment Jest configuration properties it works though...

My config looks like this:

module.exports = {
  preset: 'jest-playwright-preset',
  testMatch: ['<rootDir>/src/**/*.test.js', '<rootDir>/tests/**/*.test.js'],
  globals: {
    __DEV__: true,
  },
  // globalSetup: 'jest-environment-puppeteer/setup',
  // globalTeardown: 'jest-environment-puppeteer/teardown',
  // testEnvironment: 'jest-environment-jsdom-fourteen',
  setupFilesAfterEnv: ['<rootDir>/tests/setupTests.js'],
  reporters: ['default', require.resolve('../tests/image-reporter.js')],
  setupFiles: ['dotenv/config'],
  modulePathIgnorePatterns: ['tests/visual/dist'],
};

If I replace "preset" with:

  testEnvironment: 'jest-playwright-preset',
  globalSetup: 'jest-playwright-preset/setup',
  globalTeardown: 'jest-playwright-preset/teardown',

then it works correctly

[mmarkelov]

@FezVrasta it's difficult to say what is going wrong without whole configuration. I can only suppose that some of other options can override jest-playwright-preset. I'll try to dive into this issue to search possible problems.

[mmarkelov]

@FezVrasta I suppose this is because you define testEnvironment:
https://github.com/popperjs/popper-core/blob/fe24beeb92da1bb9573d2e6929940220008c263b/.config/jest.config.js#L6

And jest-playwright-preset like jest-puppeteer use it under hood.

I think this info should be added in README

[FezVrasta]

No that's not it, you can safely remove testEnvironment globalSetup and globalTeardown and add back preset and you will still reproduce the issue.

Also, I define test-environment with a jsdoc comment on each test that requires Playwright, so that would take precedence in any case. (and in fact it does, and manually specifying globalSetup and globalTeardown everything works)

The problem is with globalSetup and globalTeardown

[criles25]

for others that stumble upon this issue... i had to comment out

testEnvironment: "node",  // comment this line out

the jest --init created this setting by default for the jest.config.js it generated.