Switch from karma to web-test-runner #704

fcollonval · 2024-05-20T08:06:01Z

Fixes #610

Switch from karma to web-test-runner

I did not switch to jest to be able to test in browser directly and to not have to change the test (keep using mocha and chai).

Browsers are provided by playwright

fcollonval · 2024-05-20T09:06:32Z

The nice consequence is to get the macOS webkit tests green again

gabalafou

Thanks for doing this maintenance work!

I left a few inline comments.

For some reason, I had to modify some tests in order for them to pass locally. Any idea what might be going on?

I was also wondering, would you mind leaving a note about how you created this pull request? Was it a lot of search/replace or were there some magic lerna commands that helped update the sub-package configs?

I'm requesting changes specifically only for one thing specifically: the missing docs for installing Playwright locally.

.github/workflows/tests.yml

gabalafou · 2024-05-23T08:16:45Z

CONTRIBUTING.md

@@ -18,15 +18,28 @@ yarn build:src

 ## Tests

-The tests are written using karma to simulate a browser environment.
+The tests are written using [web-test-runner](https://modern-web.dev/docs/test-runner/overview/)


Probably in the section above we need to add a line for how to install the Playwright browser binaries, otherwise yarn test will not work.

We also need to specify which version of Yarn to use, because yarn playwright install worked for me in yarn v1 and v4 but not v3.

It is weird that it does not work with v3.

Yeah, I wonder if what I was seeing actually had more to do with my other comment (about putting @playwright/test in the top-level package.json)

examples/example-dockpanel-amd/package.json

Co-authored-by: gabalafou <gabriel@fouasnon.com>

CONTRIBUTING.md

fcollonval · 2024-05-24T14:42:09Z

Thanks for the review @gabalafou

The fact that you need to change the tests locally is surprising as they work for me locally and on the CI. Does it happens with all browsers?

What is your environment? NodeJS, OS?

Note for yarn, the real version used should be independent of your installed version as we include it with the repo: https://github.com/jupyterlab/lumino/tree/main/.yarn/releases

Config is there:

lumino/.yarnrc.yml

Line 3 in f26c85a

yarnPath: .yarn/releases/yarn-3.6.0.cjs

fcollonval · 2024-05-24T14:50:06Z

I was also wondering, would you mind leaving a note about how you created this pull request? Was it a lot of search/replace or were there some magic lerna commands that helped update the sub-package configs?

Yeah lots of smart search/replace...

gabalafou

Testing this locally some more, I think we should yarn add --dev @playwright/test at the root level of the repo, and have users do yarn playwright install.

Reasons:

Correct me if I'm wrong, but at this point, Playwright is as much a dev dependency of the repo as TypeScript, so it seems like it should be there
If users just copy paste the yarn build:test and yarn test commands without reading the rest of the docs, they will get a message to run yarn playwright test, not npx playwright test.

.github/workflows/tests.yml

CONTRIBUTING.md

Co-authored-by: gabalafou <gabriel@fouasnon.com>

gabalafou

Okay, this runs "out of the box" now, thank you! (By which I mean, I can do a fresh install of the repo and run the tests without getting stuck along the way.)

I'm still getting the test failures I mentioned before. I checked that this doesn't happen before this PR so I think the failures are somehow related.

I'm running Node 20.2.0 and macOS 14.4.1.

What's really bizarre is if I run each browser separately--yarn test:webkit, yarn test:firefox, and yarn test:chromium--all the tests pass. It's only when I run yarn test that I get the 9 test failures.

Do you want to open an issue and punt on this for now, since the CI is fine?

gabalafou

I'm approving to unblock you. I'll let you decide how we want to address the tests failing on my machine :)

fcollonval · 2024-05-28T14:21:59Z

Okay, this runs "out of the box" now, thank you! (By which I mean, I can do a fresh install of the repo and run the tests without getting stuck along the way.)

🎉

fcollonval · 2024-05-28T14:37:48Z

I'm still getting the test failures I mentioned before. I checked that this doesn't happen before this PR so I think the failures are somehow related.
I'm running Node 20.2.0 and macOS 14.4.1.
Do you want to open an issue and punt on this for now, since the CI is fine?

If someone else could test it to see if you have an unlucky combination of software's or not. It would be nice.

Gentle ping to @JasonWeill, if you are on MacOS, would you have time to run the tests of this PR locally?

For reference, I'm on Debian 12 with Node.js 20.9.0.

fcollonval · 2024-05-28T14:38:01Z

Thanks a lot @gabalafou for all the tests.

JasonWeill · 2024-05-28T21:34:50Z

Running Lumino tests on tip-of-main pass, but on @fcollonval 's branch for this PR, they fail. I'm using a fresh Conda env on macOS Ventura 13.6.7.

Main branch

$ yarn test
lerna notice cli v7.1.4
lerna info versioning independent
lerna notice filter including "@lumino/!(example-)*"
lerna info filter [ '@lumino/!(example-)*' ]
 
    ✔  @lumino/properties:test (5s)
    ✔  @lumino/domutils:test (5s)
    ✔  @lumino/keyboard:test (5s)
    ✔  @lumino/algorithm:test (5s)
    ✔  @lumino/collections:test (3s)
    ✔  @lumino/coreutils:test (3s)
    ✔  @lumino/virtualdom:test (3s)
    ✔  @lumino/signaling:test (3s)
    ✔  @lumino/messaging:test (3s)
    ✔  @lumino/disposable:test (3s)
    ✔  @lumino/dragdrop:test (3s)
    ✔  @lumino/polling:test (7s)
    ✔  @lumino/commands:test (8s)
    ✔  @lumino/widgets:test (6s)
    ✔  @lumino/application:test (3s)
    ✔  @lumino/datagrid:test (3s)

 ————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————

 >  Lerna (powered by Nx)   Successfully ran target test for 16 projects (30s)

fcollonval's branch

$ yarn test
lerna notice cli v7.1.4
lerna info versioning independent
lerna notice filter including "@lumino/!(example-)*"
lerna info filter [ '@lumino/!(example-)*' ]
 
 >  Lerna (powered by Nx)   Running target test for 16 projects
    ✖  @lumino/algorithm:test
       > @lumino/algorithm@2.0.1 build:test
       > npm run clean:test && tsc --build tests && cd tests && rollup -c
       
       
       > @lumino/algorithm@2.0.1 clean:test
       > rimraf tests/lib tests/tsconfig.tsbuildinfo
       
       
       ./lib/index.spec.js → ./lib/bundle.test.js...
       (!) Circular dependencies
       ../../../node_modules/chai/lib/chai.js -> ../../../node_modules/chai/lib/chai/utils/index.js -> ../../../node_modules/chai/lib/chai/utils/addProperty.js -> ../../../node_modules/chai/lib/chai.js
       ../../../node_modules/chai/lib/chai.js -> ../../../node_modules/chai/lib/chai/utils/index.js -> ../../../node_modules/chai/lib/chai/utils/addMethod.js -> ../../../node_modules/chai/lib/chai.js
       ../../../node_modules/chai/lib/chai.js -> ../../../node_modules/chai/lib/chai/utils/index.js -> ../../../node_modules/chai/lib/chai/utils/overwriteProperty.js -> ../../../node_modules/chai/lib/chai.js
       ...and 3 more
       created ./lib/bundle.test.js in 369ms
       
       Chromium: |██████████████████████████████| 0/1 test files | 0 passed, 0 failed
       
       Running tests...
       
       Running 1 test files...
       
tests/lib/bundle.test.js:
       
        ❌ browserType.launch: Executable doesn't exist at /Users/jweill/Library/Caches/ms-playwright/chromium-1117/chrome-mac/Chromium.app/Contents/MacOS/Chromium
       ╔═════════════════════════════════════════════════════════════════════════╗
       ║ Looks like Playwright Test or Playwright was just installed or updated. ║
       ║ Please run the following command to download new browsers:              ║
       ║                                                                         ║
       ║     yarn playwright install                                             ║
       ║                                                                         ║
       ║ <3 Playwright Team                                                      ║
       ╚═════════════════════════════════════════════════════════════════════════╝ 
           browserType.launch: Executable doesn't exist at /Users/jweill/Library/Caches/ms-playwright/chromium-1117/chrome-mac/Chromium.app/Contents/MacOS/Chromium
           ╔═════════════════════════════════════════════════════════════════════════╗
           ║ Looks like Playwright Test or Playwright was just installed or updated. ║
           ║ Please run the following command to download new browsers:              ║
           ║                                                                         ║
           ║     yarn playwright install                                             ║
           ║                                                                         ║
           ║ <3 Playwright Team                                                      ║
           ╚═════════════════════════════════════════════════════════════════════════╝
               at /Users/jweill/git/lumino/node_modules/@web/test-runner-playwright/dist/PlaywrightLauncher.js:94:74
               at PlaywrightLauncher.getOrStartBrowser (/Users/jweill/git/lumino/node_modules/@web/test-runner-playwright/dist/PlaywrightLauncher.js:96:15)
               at PlaywrightLauncher.startSession (/Users/jweill/git/lumino/node_modules/@web/test-runner-playwright/dist/PlaywrightLauncher.js:41:36)
               at TestScheduler.startSession (/Users/jweill/git/lumino/node_modules/@web/test-runner-core/dist/runner/TestScheduler.js:103:70)
               at TestScheduler.runNextScheduled (/Users/jweill/git/lumino/node_modules/@web/test-runner-core/dist/runner/TestScheduler.js:83:30)
               at TestScheduler.schedule (/Users/jweill/git/lumino/node_modules/@web/test-runner-core/dist/runner/TestScheduler.js:47:14)
               at TestRunner.runTests (/Users/jweill/git/lumino/node_modules/@web/test-runner-core/dist/runner/TestRunner.js:92:28)
               at TestRunner.start (/Users/jweill/git/lumino/node_modules/@web/test-runner-core/dist/runner/TestRunner.js:65:22)
               at async startTestRunner (/Users/jweill/git/lumino/node_modules/@web/test-runner/dist/startTestRunner.js:46:9)
       
       Chromium: |██████████████████████████████| 1/1 test files | 0 passed, 0 failed
       
       Error while running tests.
       
       

 ————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————

 >  Lerna (powered by Nx)   Ran target test for 16 projects (4s)
 
    ✔    0/1 succeeded [0 read from cache]
 
    ✖    1/1 targets failed, including the following:
         - @lumino/algorithm:test

krassowski · 2024-05-28T21:39:09Z

@JasonWeill did you run yarn playwright install as instructed by the updated CONTRIBUTING.md?

JasonWeill · 2024-05-28T21:49:24Z

Sorry, I was looking at the old CONTRIBUTING.md file. After installing Playwright, then running the tests, I still see errors, but different errors.

yarn playwright install

$ yarn playwright install
Removing unused browser at /Users/jweill/Library/Caches/ms-playwright/chromium-1067
Removing unused browser at /Users/jweill/Library/Caches/ms-playwright/firefox-1408
Removing unused browser at /Users/jweill/Library/Caches/ms-playwright/webkit-1860
Downloading Chromium 125.0.6422.26 (playwright build v1117) from https://playwright.azureedge.net/builds/chromium/1117/chromium-mac-arm64.zip
134.6 MiB [====================] 100% 0.0s
Chromium 125.0.6422.26 (playwright build v1117) downloaded to /Users/jweill/Library/Caches/ms-playwright/chromium-1117
Downloading Firefox 125.0.1 (playwright build v1449) from https://playwright.azureedge.net/builds/firefox/1449/firefox-mac-13-arm64.zip
77.8 MiB [====================] 100% 0.0s
Firefox 125.0.1 (playwright build v1449) downloaded to /Users/jweill/Library/Caches/ms-playwright/firefox-1449
Downloading Webkit 17.4 (playwright build v2003) from https://playwright.azureedge.net/builds/webkit/2003/webkit-mac-13-arm64.zip
66.6 MiB [====================] 100% 0.0s
Webkit 17.4 (playwright build v2003) downloaded to /Users/jweill/Library/Caches/ms-playwright/webkit-2003

yarn test

$ yarn test
lerna notice cli v7.1.4
lerna info versioning independent
lerna notice filter including "@lumino/!(example-)*"
lerna info filter [ '@lumino/!(example-)*' ]
 
    ✔  @lumino/algorithm:test (8s)
    ✔  @lumino/coreutils:test (3s)
    ✔  @lumino/signaling:test (4s)
    ✔  @lumino/disposable:test (3s)
    ✔  @lumino/domutils:test (4s)
    ✔  @lumino/keyboard:test (3s)
    ✔  @lumino/virtualdom:test (4s)
    ✔  @lumino/dragdrop:test (4s)
    ✔  @lumino/commands:test (8s)
    ✔  @lumino/collections:test (3s)
    ✔  @lumino/messaging:test (4s)
    ✔  @lumino/properties:test (3s)

    ✖  @lumino/widgets:test
       > @lumino/widgets@2.3.2 build:test
       > npm run clean:test && tsc --build tests && cd tests && rollup -c
       
       
       > @lumino/widgets@2.3.2 clean:test
       > rimraf tests/lib tests/tsconfig.tsbuildinfo
       
       
       ./lib/index.spec.js → ./lib/bundle.test.js...
       (!) Circular dependencies
       ../../../node_modules/chai/lib/chai.js -> ../../../node_modules/chai/lib/chai/utils/index.js -> ../../../node_modules/chai/lib/chai/utils/addProperty.js -> ../../../node_modules/chai/lib/chai.js
       ../../../node_modules/chai/lib/chai.js -> ../../../node_modules/chai/lib/chai/utils/index.js -> ../../../node_modules/chai/lib/chai/utils/addMethod.js -> ../../../node_modules/chai/lib/chai.js
       ../../../node_modules/chai/lib/chai.js -> ../../../node_modules/chai/lib/chai/utils/index.js -> ../../../node_modules/chai/lib/chai/utils/overwriteProperty.js -> ../../../node_modules/chai/lib/chai.js
       ...and 3 more
       created ./lib/bundle.test.js in 817ms
       
       Chromium: |██████████████████████████████| 0/1 test files | 0 passed, 0 failed
       
       Running tests...
       
       Running 1 test files...
       
tests/lib/bundle.test.js:
       
        ❌ @lumino/widgets > Menu > #handleEvent() > mousemove > should set the active index
             AssertionError: expected -1 to equal +0
             + expected - actual
             
             --1
             +0
             
             at n.<anonymous> (tests/lib/bundle.test.js:39079:49)
       
        ❌ @lumino/widgets > Menu > #handleEvent() > mousemove > should open a child menu after a timeout
             AssertionError: expected -1 to equal +0
             + expected - actual
             
             --1
             +0
             
             at n.<anonymous> (tests/lib/bundle.test.js:39094:49)
       
        ❌ @lumino/widgets > Menu > #handleEvent() > mouseleave > should reset the active index
             AssertionError: expected -1 to equal +0
             + expected - actual
             
             --1
             +0
             
             at n.<anonymous> (tests/lib/bundle.test.js:39139:49)
       
        ❌ @lumino/widgets > Menu > #handleEvent() > mousedown > should not close the menu if on a child node
             AssertionError: expected false to equal true
             + expected - actual
             
             -false
             +true
             
             at n.<anonymous> (tests/lib/bundle.test.js:39160:48)
       
        ❌ @lumino/widgets > MenuBar > #handleEvent() > mousedown > should close an active menu
             AssertionError: expected -1 to equal +0
             + expected - actual
             
             --1
             +0
             
             at n.<anonymous> (tests/lib/bundle.test.js:40419:48)
       
        ❌ @lumino/widgets > MenuBar > #handleEvent() > mousedown > should open an active menu
             AssertionError: expected false to equal true
             + expected - actual
             
             -false
             +true
             
             at n.<anonymous> (tests/lib/bundle.test.js:40437:48)
       
        ❌ @lumino/widgets > MenuBar > #handleEvent() > mousedown > should not close an active menu if not a left mouse press
             AssertionError: expected -1 to equal +0
             + expected - actual
             
             --1
             +0
             
             at n.<anonymous> (tests/lib/bundle.test.js:40455:48)
       
        ❌ @lumino/widgets > MenuBar > #handleEvent() > mousedown > should not work on a menu bar item whose menu is empty
             AssertionError: expected +0 to equal -1
             + expected - actual
             
             -0
             +-1
             
             at n.<anonymous> (tests/lib/bundle.test.js:40472:48)
       
        ❌ @lumino/widgets > MenuBar > #handleEvent() > mousemove > should open a new menu if a menu is already open
             AssertionError: expected +0 to equal 1
             + expected - actual
             
             -0
             +1
             
             at n.<anonymous> (tests/lib/bundle.test.js:40487:48)
       
       Chromium: |██████████████████████████████| 1/1 test files | 926 passed, 9 failed, 11 skipped
       
       Finished running tests in 2.2s with 9 failed tests.
       
       

 ————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————

 >  Lerna (powered by Nx)   Ran target test for 16 projects (58s)
 
    ✔    12/13 succeeded [0 read from cache]
 
    ✖    1/13 targets failed, including the following:
         - @lumino/widgets:test

Co-authored-by: gabalafou <gabriel@fouasnon.com>

fcollonval · 2024-05-29T08:16:45Z

Thanks for testing the PR @JasonWeill

As the errors are reproducible, I applied the fix proposed by @gabalafou in e96e2e3. Tests are passing for me locally - so 🤞 for the CI.

fcollonval · 2024-05-29T15:41:03Z

Ok as the CI is green and the fix is working locally for @gabalafou

I'll merge this one.

Switch from karma to web-test-runner

86c4ac7

fcollonval added the maintenance Dependencies, build, technical debt, etc. label May 20, 2024

github-actions bot assigned fcollonval May 20, 2024

fcollonval added 4 commits May 20, 2024 10:21

Fix installing playwright browser

dded51c

Update doc and fix installing chromium

7ba2cfa

Align browser name with playwright naming

91dbe24

Fix inconsistency in commands package

1217e9c

jtpio mentioned this pull request May 23, 2024

Weekly Team Meetings: Jan–Jun 2024 jupyterlab/frontends-team-compass#229

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gabalafou requested changes May 23, 2024

View reviewed changes

Add note on playwright cache

7ccc7bd

Co-authored-by: gabalafou <gabriel@fouasnon.com>

fcollonval commented May 24, 2024

View reviewed changes

CONTRIBUTING.md Show resolved Hide resolved

Add note to install pw browsers

7f6d202

Lint contributing.md

a86de5f

Recommend npx rather than yarn to install web browsers

53ba8be

gabalafou reviewed May 24, 2024

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fcollonval and others added 2 commits May 25, 2024 18:02

[skip ci] Apply suggestions from code review

69794dd

Co-authored-by: gabalafou <gabriel@fouasnon.com>

Add playwright as root dev dependency

c43a568

fcollonval requested a review from gabalafou May 25, 2024 16:10

gabalafou reviewed May 27, 2024

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gabalafou approved these changes May 27, 2024

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More robust tests

e96e2e3

Co-authored-by: gabalafou <gabriel@fouasnon.com>

fcollonval merged commit 6b92c7e into jupyterlab:main May 29, 2024
17 checks passed

fcollonval deleted the maintenance/karma-to-web-runner branch May 29, 2024 15:41

fcollonval mentioned this pull request Jun 28, 2024

Bump versions and fix yarn installation in CI #711

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Switch from karma to web-test-runner #704

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Switch from karma to web-test-runner #704

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