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hspec / hspec-wai

Helpers to test WAI applications with Hspec

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Test suite failure on GHC 7.6.3

snoyberg opened this issue · comments

commented

Discovered via Stackage:

Unpacking to hspec-wai-0.3.0.1/
Resolving dependencies...
Configuring hspec-wai-0.3.0.1...
Building hspec-wai-0.3.0.1...
Preprocessing library hspec-wai-0.3.0.1...
[1 of 5] Compiling Test.Hspec.Wai.Util ( src/Test/Hspec/Wai/Util.hs, dist/build/Test/Hspec/Wai/Util.o )
[2 of 5] Compiling Test.Hspec.Wai.Matcher ( src/Test/Hspec/Wai/Matcher.hs, dist/build/Test/Hspec/Wai/Matcher.o )
[3 of 5] Compiling Test.Hspec.Wai.Internal ( src/Test/Hspec/Wai/Internal.hs, dist/build/Test/Hspec/Wai/Internal.o )
[4 of 5] Compiling Test.Hspec.Wai   ( src/Test/Hspec/Wai.hs, dist/build/Test/Hspec/Wai.o )
[5 of 5] Compiling Test.Hspec.Wai.JSON ( src/Test/Hspec/Wai/JSON.hs, dist/build/Test/Hspec/Wai/JSON.o )
In-place registering hspec-wai-0.3.0.1...
Preprocessing test suite 'spec' for hspec-wai-0.3.0.1...
[1 of 1] Compiling Main             ( test/Spec.hs, dist/build/spec/spec-tmp/Main.o )
Linking dist/build/spec/spec ...
Preprocessing test suite 'doctests' for hspec-wai-0.3.0.1...
[1 of 1] Compiling Main             ( test/doctests.hs, dist/build/doctests/doctests-tmp/Main.o )
Linking dist/build/doctests/doctests ...
Preprocessing test suite 'README' for hspec-wai-0.3.0.1...
[1 of 1] Compiling Main             ( README.lhs, dist/build/README/README-tmp/Main.o )
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Linking dist/build/README/README ...
Building hspec-wai-0.3.0.1...
Preprocessing library hspec-wai-0.3.0.1...
In-place registering hspec-wai-0.3.0.1...
Preprocessing test suite 'spec' for hspec-wai-0.3.0.1...
Preprocessing test suite 'doctests' for hspec-wai-0.3.0.1...
Preprocessing test suite 'README' for hspec-wai-0.3.0.1...
Running 3 test suites...
Test suite spec: RUNNING...


Finished in 0.0002 seconds
0 examples, 0 failures
Test suite spec: PASS
Test suite logged to: dist/test/hspec-wai-0.3.0.1-spec.log
Test suite doctests: RUNNING...

src/Test/Hspec/Wai/Internal.hs:28:42:
    No instance for (MonadIO
                       (transformers-0.3.0.0:Control.Monad.Trans.Reader.ReaderT
                          Application
                          (transformers-0.3.0.0:Control.Monad.Trans.State.Lazy.StateT
                             Network.Wai.Test.ClientState IO)))
      arising from the 'deriving' clause of a data type declaration
    Possible fix:
      add an instance declaration for
      (MonadIO
         (transformers-0.3.0.0:Control.Monad.Trans.Reader.ReaderT
            Application
            (transformers-0.3.0.0:Control.Monad.Trans.State.Lazy.StateT
               Network.Wai.Test.ClientState IO)))
      or use a standalone 'deriving instance' declaration,
           so you can specify the instance context yourself
    When deriving the instance for (MonadIO WaiSession)
Test suite doctests: FAIL
Test suite logged to: dist/test/hspec-wai-0.3.0.1-doctests.log
Test suite README: RUNNING...

GET /
  - responds with 200
  - responds with 'hello'
  - responds with 200 / 'hello'
  - has Content-Type: text/plain

GET /some-json
  - responds with some JSON

Finished in 0.0016 seconds
5 examples, 0 failures
Test suite README: PASS
Test suite logged to: dist/test/hspec-wai-0.3.0.1-README.log
2 of 3 test suites (2 of 3 test cases) passed.
commented

From the build output, hspec-wai is build against transformers-0.3.0.0. I assume that a newer version of transformers is also installed and doctest will pick the latest version (as GHCi would do). That way we end up with two versions of transformers which leads to the failure.

I'll fix this by running doctest on travis only.

commented

On Hackage as hspec-wai-0.3.0.2.