Support running without a packages/ directory

[zoechi]

pub run test

 (master) $ pub run test
00:00 +0 -1: loading test/server_build/find_dependencies_test.dart                                 
  Failed to load "test/server_build/find_dependencies_test.dart":
  "package:test/src/backend/metadata.dart": Error loading file:///home/myuser/dart/pubs/packages/test/src/backend/metadata.dart:
    Cannot open file, path = '/home/myuser/dart/pubs/packages/test/src/backend/metadata.dart' (OS Error: No such file or directory, errno = 2)
  #0      _asyncLoadErrorCallback (dart:_builtin:149)
  #1      _asyncLoadError (dart:_builtin:541)
  #2      _handleLoaderReply (dart:_builtin:364)
  #3      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:148)

Dart VM version: 1.13.0-edge.41840f374008c8430c1bf034f65af1c2c39e19f5 (Fri Aug 21 16:18:10 2015) on "linux_x64"
test 0.12.4+6

[rayk]

Same Problem - Earlier Version of dart

Dart VM version: 1.12.0-dev.5.8 (Thu Aug 20 07:16:22 2015) on "macos_x64"
test version: "0.12.4+6"

---

pub run test

00:00 +0 -1: loading test/comXsGraph_test.dart                                                     
  Failed to load "test/comXsGraph_test.dart":
  "package:test/src/backend/metadata.dart": Error loading file:///Users/rayk/Projects/comXsGraph/packages/test/src/backend/metadata.dart:
    Cannot open file, path = '/Users/rayk/Projects/comXsGraph/packages/test/src/backend/metadata.dart' (OS Error: No such file or directory, errno = 2)
  #0      _asyncLoadErrorCallback (dart:_builtin:149)
  #1      _asyncLoadError (dart:_builtin:541)
  #2      _handleLoaderReply (dart:_builtin:364)
  #3      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:148)
00:00 +0 -1: Some tests failed.       

---

pub run test -p content-shell test/comXsStore_test.dart

00:00 +0 -1: loading test/comXsStore_test.dart                                                     
  Invalid argument(s): A directory corresponding to fileSystemPath "/Users/rayk/Projects/comXsGraph/packages" could not be found
  package:shelf_static/src/static_handler.dart 37  createStaticHandler
  ===== asynchronous gap ===========================
  dart:async                                       Future.Future.sync
  package:async/src/async_memoizer.dart 44         AsyncMemoizer.runOnce

00:00 +0 -1: Some tests failed.        

---

Where I am not using a .packages file, it appears to run.

Thanks in advance.
R.

[nex3]

The test runner doesn't yet support running without a packages directory. Doing so is blocked on dart-lang/sdk#23990.

Note that the --no-package-symlinks option to pub get is hidden on bleeding edge and 1.12-dev, which is an indication that it's not expected to work everywhere yet.

[sethladd]

For those following along: all the (known) blockers for this are captured in dart-lang/sdk#24112

[mit-mit]

@nex3, do you have an update on when a fix to this might land?

[pulyaevskiy]

Looks like dart-lang/sdk#23990 has been resolved a while ago, so "blocked" tag can be removed from this issue?

[nex3]

There's still ongoing work to land and verify stable package-introspection APIs. Many of them are in place but the verification work is still ongoing.

[abarth]

For what it's worth, Flutter is switching over to using --no-package-symlinks. We've worked around this issue, but ideally we'd like to go back to using pub run test for our tests that run in the standalone DartVM.

[nex3]

You're of course welcome to do whatever you need to get your code working, but please keep in mind that --no-package-symlinks is still considered experimental and any package may break under it at any time.

[abarth]

Yeah, we wanted to try it out. If too much stuff is broken, we can go back to having the symlinks around.

[eseidelGoogle]

We ran into this again, but have worked around it for now by adding a pub get call to flutter drive in flutter/flutter#4259.

[kevmoo]

@lrhn is working hard on testing here. That should unblock work for this.

[eseidelGoogle]

Just checking in on this. No huge rush (I know @nex3 is hard at work on other things). This I believe is the last remaining issue Flutter is running into with our use of .packages files. :)

[eseidelGoogle]

My bad. I just checked Natalie's things-to-do-soon list and this is on the top of it. Apologies for the noise.

[kevmoo]

https://codereview.chromium.org/2184543002/