Explanation of why no tests ran

[matanlurey]

An excerpt of email by @chalin (emphasis mine):

pub serve test --port=8080
Loading source assets...
Loading angular2, angular2/transform/reflection_remover, test/pub_serve and dart_to_js_script_rewriter transformers...
Pub "serve" started on http://localhost:8080
Serving angular_tour_of_heroes test on http://localhost:8080
Finished compilation. Running tests...
pub run test --pub-serve=8080
No tests ran.

As I assume it is never the intention of the author to use pub run test to run no tests, can test recover and explain why no tests were run? In this particular case it was because all tests were filtered out since the default platform is VM, and all of Patrice's tests were browser based.

I'd like to see:

No tests ran: The default platform "vm" was used, but tests expected: ["browser"].

See goo.gl/xxx for how to configure the test runner for different platforms.

[srawlins]

Agreed. This is my favorite:

$ cd dart-webdriver
$ git pull upstream master
Already up-to-date.
$ pub get
Resolving dependencies...
...
$ pub run test
00:07 +0: All tests skipped.

Um... yay!

[nex3]

I believe the particular issue is due to a bug or SDK incompatibility that should go away when you pub upgrade.

[alexZaicev]

The error still exist in my open project.

My project structure
--root
--lib
--test
---codemetrics
----test_file.dart
----test_file2.dart

When I run pub run test console prints out no test ran

[jakemac53]

@alexZaicev This is because you need to follow the naming conventions, by default the test runner only considers files ending in _test.dart to be tests.

So in this case it would be nice if we printed something like No tests matching the file pattern "*_test.dart"

[alexZaicev]

@jakemac53 Thanks for the info, I`ll change my file names accordingly.

Can this be added to the documentation? Under section 'Writing Tests'

[grouma]

It's under the Running Tests section:
https://github.com/dart-lang/test/blob/master/pkgs/test/README.md#running-tests

We probably should add it to the Writing Tests section as well.