Race condition on ng test

@Brocco

There might be a race condition when running ng test. On a newly generated project I got the following output when running ng test once, killing it, then running again:

(on the first run notice the karma watcher warnings before build is done, and that 0 tests run)

filipe.silva@DESKTOP-7ND6T3R MINGW64 /E/dev/ideablade/testing/testproj6 (master)
$ ng test
Building11 03 2016 11:17:08.275:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.js" does not match any file.
11 03 2016 11:17:08.278:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.html" does not match any file.
11 03 2016 11:17:08.279:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.css" does not match any file.
11 03 2016 11:17:08.280:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.ts" does not match any file.
11 03 2016 11:17:08.281:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.js.map" does not match any file.
Building...

Build successful - 2595ms.

Slowest Trees                                 | Total
----------------------------------------------+---------------------
DiffingTSCompiler                             | 2359ms

Slowest Trees (cumulative)                    | Total (avg)
----------------------------------------------+---------------------
DiffingTSCompiler (1)                         | 2359ms

11 03 2016 11:17:11.229:WARN [karma]: No captured browser, open http://localhost:9876/
11 03 2016 11:17:11.240:INFO [karma]: Karma v0.13.22 server started at http://localhost:9876/
11 03 2016 11:17:11.259:INFO [launcher]: Starting browser Chrome
11 03 2016 11:17:18.699:INFO [Chrome 48.0.2564 (Windows 10 0.0.0)]: Connected on socket /#_70pkh4fF_89rpxsAAAA with id 37874958
Chrome 48.0.2564 (Windows 10 0.0.0) WARN: 'DEPRECATION WARNING: 'enqueueTask' is no longer supported and will be removed in next major release. Use addTask/addRepeatingTask/addMicroTask'

Chrome 48.0.2564 (Windows 10 0.0.0): Executed 0 of 0 ERROR (0.004 secs / 0 secs)


filipe.silva@DESKTOP-7ND6T3R MINGW64 /E/dev/ideablade/testing/testproj6 (master)
$ ng test
Building11 03 2016 11:17:34.176:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.css" does not match any file.
Building.11 03 2016 11:17:36.771:WARN [karma]: No captured browser, open http://localhost:9876/
11 03 2016 11:17:36.791:INFO [karma]: Karma v0.13.22 server started at http://localhost:9876/
11 03 2016 11:17:36.798:INFO [launcher]: Starting browser Chrome
Building...

Build successful - 2505ms.

Slowest Trees                                 | Total
----------------------------------------------+---------------------
DiffingTSCompiler                             | 2287ms

Slowest Trees (cumulative)                    | Total (avg)
----------------------------------------------+---------------------
DiffingTSCompiler (1)                         | 2287ms

11 03 2016 11:17:44.364:INFO [Chrome 48.0.2564 (Windows 10 0.0.0)]: Connected on socket /#a-Kii2MGcnRXTJ97AAAA with id 51965993
Chrome 48.0.2564 (Windows 10 0.0.0) WARN: 'DEPRECATION WARNING: 'enqueueTask' is no longer supported and will be removed in next major release. Use addTask/addRepeatingTask/addMicroTask'

Chrome 48.0.2564 (Windows 10 0.0.0): Executed 2 of 2 SUCCESS (0.019 secs / 0.013 secs)

/cc @Brocco

I've another log that seems to show something fishy is going on. When working on #292. I added a route and then ran ng test, and the tests ended up running twice back to back with no file change in between:

11 03 2016 11:22:04.073:INFO [karma]: Delaying execution, these browsers are not ready: Chrome 48.0.2564 (Windows 10 0.0.0)
Chrome 48.0.2564 (Windows 10 0.0.0): Executed 2 of 2 SUCCESS (0.017 secs / 0.012 secs)
Chrome 48.0.2564 (Windows 10 0.0.0) WARN: 'DEPRECATION WARNING: 'enqueueTask' is no longer supported and will be removed in next major release. Use addTask/addRepeatingTask/addMicroTask'

Chrome 48.0.2564 (Windows 10 0.0.0): Executed 6 of 6 SUCCESS (0.167 secs / 0.156 secs)

It seems karma is running before the build is done, and then running afterwards when it sees the built files.

Full log:

filipe.silva@DESKTOP-7ND6T3R MINGW64 /E/dev/ideablade/testing/testproj6 (master)
$ ng g route hero
installing route
  add route hero
  create src\app\hero\hero-detail.component.css
  create src\app\hero\hero-detail.component.html
  create src\app\hero\hero-detail.component.spec.ts
  create src\app\hero\hero-detail.component.ts
  create src\app\hero\hero-list.component.css
  create src\app\hero\hero-list.component.html
  create src\app\hero\hero-list.component.spec.ts
  create src\app\hero\hero-list.component.ts
  create src\app\hero\hero-root.component.ts
  create src\app\hero\hero.service.spec.ts
  create src\app\hero\hero.service.ts
installing route-config
  create src\app\route-config.ts
filipe.silva@DESKTOP-7ND6T3R MINGW64 /E/dev/ideablade/testing/testproj6 (master)
$ ng test
Building11 03 2016 11:21:56.830:WARN [watcher]: Pattern "E:/dev/ideablade/testing/testproj6/dist/**/*.css" does not match any file.
Building.11 03 2016 11:21:59.852:WARN [karma]: No captured browser, open http://localhost:9876/
11 03 2016 11:21:59.863:INFO [karma]: Karma v0.13.22 server started at http://localhost:9876/
11 03 2016 11:21:59.869:INFO [launcher]: Starting browser Chrome
Building...

Build successful - 2926ms.

Slowest Trees                                 | Total
----------------------------------------------+---------------------
DiffingTSCompiler                             | 2677ms

Slowest Trees (cumulative)                    | Total (avg)
----------------------------------------------+---------------------
DiffingTSCompiler (1)                         | 2677ms

11 03 2016 11:22:03.490:INFO [Chrome 48.0.2564 (Windows 10 0.0.0)]: Connected on socket /#dCp4Rmfh94NifwBDAAAA with id 58008592
11 03 2016 11:22:03.820:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-detail.component.html".
11 03 2016 11:22:03.824:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-detail.component.css".
11 03 2016 11:22:03.825:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-detail.component.js".
11 03 2016 11:22:03.825:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-detail.component.spec.js".
11 03 2016 11:22:03.830:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-list.component.css".
11 03 2016 11:22:03.831:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-list.component.js".
11 03 2016 11:22:03.832:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-list.component.html".
11 03 2016 11:22:03.833:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-list.component.spec.js".
11 03 2016 11:22:03.834:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero-root.component.js".
11 03 2016 11:22:03.834:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero.service.js".
11 03 2016 11:22:03.841:INFO [watcher]: Added file "E:/dev/ideablade/testing/testproj6/dist/app/hero/hero.service.spec.js".
Chrome 48.0.2564 (Windows 10 0.0.0) WARN: 'DEPRECATION WARNING: 'enqueueTask' is no longer supported and will be removed in next major release. Use addTask/addRepeatingTask/addMicroTask'

11 03 2016 11:22:04.073:INFO [karma]: Delaying execution, these browsers are not ready: Chrome 48.0.2564 (Windows 10 0.0.0)
Chrome 48.0.2564 (Windows 10 0.0.0): Executed 2 of 2 SUCCESS (0.017 secs / 0.012 secs)
Chrome 48.0.2564 (Windows 10 0.0.0) WARN: 'DEPRECATION WARNING: 'enqueueTask' is no longer supported and will be removed in next major release. Use addTask/addRepeatingTask/addMicroTask'

Chrome 48.0.2564 (Windows 10 0.0.0): Executed 6 of 6 SUCCESS (0.167 secs / 0.156 secs)


filipe.silva@DESKTOP-7ND6T3R MINGW64 /E/dev/ideablade/testing/testproj6 (master)
$ ng test
Building.11 03 2016 11:22:29.479:WARN [karma]: No captured browser, open http://localhost:9876/
11 03 2016 11:22:29.491:INFO [karma]: Karma v0.13.22 server started at http://localhost:9876/
11 03 2016 11:22:29.499:INFO [launcher]: Starting browser Chrome
Building...

Build successful - 2458ms.

Slowest Trees                                 | Total
----------------------------------------------+---------------------
DiffingTSCompiler                             | 2222ms

Slowest Trees (cumulative)                    | Total (avg)
----------------------------------------------+---------------------
DiffingTSCompiler (1)                         | 2222ms

11 03 2016 11:22:33.089:INFO [Chrome 48.0.2564 (Windows 10 0.0.0)]: Connected on socket /#sF1H9SoaDyNSf09DAAAA with id 14110543
Chrome 48.0.2564 (Windows 10 0.0.0) WARN: 'DEPRECATION WARNING: 'enqueueTask' is no longer supported and will be removed in next major release. Use addTask/addRepeatingTask/addMicroTask'

Chrome 48.0.2564 (Windows 10 0.0.0): Executed 6 of 6 SUCCESS (0.148 secs / 0.136 secs)

bug(test): resolve test race condition

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Race condition on `ng test` #293

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Race condition on ng test #293

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filipesilva commented on Mar 11, 2016

angular-automatic-lock-bot commented on Sep 5, 2019

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Race condition on `ng test` #293