Occasional test failure

[snoyberg]

I'm seeing the following test failure in some circumstances. I think it's just a race condition in the tests, but I'm not certain.

Unpacking to fsnotify-0.1.0.2/
Resolving dependencies...
Configuring fsnotify-0.1.0.2...
Building fsnotify-0.1.0.2...
Preprocessing library fsnotify-0.1.0.2...
[1 of 7] Compiling System.FSNotify.Path ( src/System/FSNotify/Path.hs, dist/build/System/FSNotify/Path.o )
[2 of 7] Compiling System.FSNotify.Types ( src/System/FSNotify/Types.hs, dist/build/System/FSNotify/Types.o )
[3 of 7] Compiling System.FSNotify.Listener ( src/System/FSNotify/Listener.hs, dist/build/System/FSNotify/Listener.o )
[4 of 7] Compiling System.FSNotify.Linux ( src/System/FSNotify/Linux.hs, dist/build/System/FSNotify/Linux.o )
[5 of 7] Compiling System.FSNotify.Polling ( src/System/FSNotify/Polling.hs, dist/build/System/FSNotify/Polling.o )
[6 of 7] Compiling System.FSNotify  ( src/System/FSNotify.hs, dist/build/System/FSNotify.o )
[7 of 7] Compiling System.FSNotify.Devel ( src/System/FSNotify/Devel.hs, dist/build/System/FSNotify/Devel.o )
[1 of 7] Compiling System.FSNotify.Path ( src/System/FSNotify/Path.hs, dist/build/System/FSNotify/Path.p_o )
[2 of 7] Compiling System.FSNotify.Types ( src/System/FSNotify/Types.hs, dist/build/System/FSNotify/Types.p_o )
[3 of 7] Compiling System.FSNotify.Listener ( src/System/FSNotify/Listener.hs, dist/build/System/FSNotify/Listener.p_o )
[4 of 7] Compiling System.FSNotify.Linux ( src/System/FSNotify/Linux.hs, dist/build/System/FSNotify/Linux.p_o )
[5 of 7] Compiling System.FSNotify.Polling ( src/System/FSNotify/Polling.hs, dist/build/System/FSNotify/Polling.p_o )
[6 of 7] Compiling System.FSNotify  ( src/System/FSNotify.hs, dist/build/System/FSNotify.p_o )
[7 of 7] Compiling System.FSNotify.Devel ( src/System/FSNotify/Devel.hs, dist/build/System/FSNotify/Devel.p_o )
In-place registering fsnotify-0.1.0.2...
Preprocessing test suite 'test' for fsnotify-0.1.0.2...
[1 of 2] Compiling EventUtils       ( test/EventUtils.hs, dist/build/test/test-tmp/EventUtils.o )

test/EventUtils.hs:70:14: Warning:
    This binding for ‘poll’ shadows the existing binding
      imported from ‘Control.Concurrent.Async’ at test/EventUtils.hs:7:1-31

test/EventUtils.hs:74:33: Warning:
    Defaulting the following constraint(s) to type ‘Integer’
      (Num b0) arising from the literal ‘5’ at test/EventUtils.hs:74:33
      (Integral b0) arising from a use of ‘^’ at test/EventUtils.hs:74:32
    In the second argument of ‘(^)’, namely ‘5’
    In the second argument of ‘(*)’, namely ‘10 ^ 5’
    In the ‘confPollInterval’ field of a record

test/EventUtils.hs:88:14: Warning:
    This binding for ‘poll’ shadows the existing binding
      imported from ‘Control.Concurrent.Async’ at test/EventUtils.hs:7:1-31

test/EventUtils.hs:97:1: Warning:
    Top-level binding with no type signature:
      expectEventsHere :: (?timeInterval::Int) =>
                          Bool -> [EventPattern] -> IO () -> Assertion

test/EventUtils.hs:97:18: Warning:
    This binding for ‘poll’ shadows the existing binding
      imported from ‘Control.Concurrent.Async’ at test/EventUtils.hs:7:1-31

test/EventUtils.hs:98:1: Warning:
    Top-level binding with no type signature:
      expectEventsHereRec :: (?timeInterval::Int) =>
                             Bool -> [EventPattern] -> IO () -> Assertion

test/EventUtils.hs:98:21: Warning:
    This binding for ‘poll’ shadows the existing binding
      imported from ‘Control.Concurrent.Async’ at test/EventUtils.hs:7:1-31
[2 of 2] Compiling Main             ( test/test.hs, dist/build/test/test-tmp/Main.o )

test/test.hs:11:1: Warning:
    The import of ‘Text.Printf’ is redundant
      except perhaps to import instances from ‘Text.Printf’
    To import instances alone, use: import Text.Printf()

test/test.hs:24:1: Warning:
    Top-level binding with no type signature: main :: IO ()

test/test.hs:34:1: Warning:
    Top-level binding with no type signature: tests :: Bool -> TestTree

test/test.hs:41:21: Warning:
    Defaulting the following constraint(s) to type ‘Integer’
      (Num b0) arising from the literal ‘6’ at test/test.hs:41:21
      (Integral b0) arising from a use of ‘^’ at test/test.hs:41:20
    In the second argument of ‘(^)’, namely ‘6’
    In the second argument of ‘(*)’, namely ‘10 ^ 6’
    In the expression: 2 * 10 ^ 6

test/test.hs:42:21: Warning:
    Defaulting the following constraint(s) to type ‘Integer’
      (Num b0) arising from the literal ‘5’ at test/test.hs:42:21
      (Integral b0) arising from a use of ‘^’ at test/test.hs:42:20
    In the second argument of ‘(^)’, namely ‘5’
    In the second argument of ‘(*)’, namely ‘10 ^ 5’
    In the expression: 5 * 10 ^ 5

test/test.hs:54:44: Warning:
    Defaulting the following constraint(s) to type ‘Integer’
      (Num b0) arising from the literal ‘6’ at test/test.hs:54:44
      (Integral b0) arising from a use of ‘^’ at test/test.hs:54:43
    In the second argument of ‘(^)’, namely ‘6’
    In the second argument of ‘($)’, namely ‘10 ^ 6’
    In the second argument of ‘when’, namely ‘(threadDelay $ 10 ^ 6)’

test/test.hs:75:5: Warning:
    This binding for ‘filename’ shadows the existing binding
      imported from ‘Filesystem.Path.CurrentOS’ at test/test.hs:8:1-32
      (and originally defined in ‘Filesystem.Path’)
Linking dist/build/test/test ...
Building fsnotify-0.1.0.2...
Preprocessing library fsnotify-0.1.0.2...
In-place registering fsnotify-0.1.0.2...
Preprocessing test suite 'test' for fsnotify-0.1.0.2...
Running 1 test suites...
Test suite test: RUNNING...
Tests
  Native
    Non-recursive
      Right here
        new file:                FAIL
          Unexpected event.
            Expected :[Added FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile",Modified FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile"]
            Actual: [Modified (FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile") 2014-08-07 17:45:59.012689 UTC,Added (FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile") 2014-08-07 17:45:59.012681 UTC]
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
      In a subdirectory
        new file:                OK
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
    Recursive
      Right here
        new file:                FAIL
          Unexpected event.
            Expected :[Added FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile",Modified FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile"]
            Actual: [Modified (FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile") 2014-08-07 17:46:03.164445 UTC,Added (FilePath "/home/ubuntu/haskell/stackage/runtests/fsnotify-0.1.0.2/testdir/test.6435/testfile") 2014-08-07 17:46:03.164444 UTC]
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
      In a subdirectory
        new file:                OK
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
  Polling
    Non-recursive
      Right here
        new file:                OK
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
      In a subdirectory
        new file:                OK
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
    Recursive
      Right here
        new file:                OK
        modify file:             OK
        delete file:             OK
        directories are ignored: OK
      In a subdirectory
        new file:                OK
        modify file:             OK
        delete file:             OK
        directories are ignored: OK

2 out of 32 tests failed
Test suite test: FAIL
Test suite logged to: dist/test/fsnotify-0.1.0.2-test.log
0 of 1 test suites (0 of 1 test cases) passed.

[UnkindPartition]

@snoyberg thanks for the report. I released 0.1.0.3 to hackage with a fix. There's still a small chance for them to be in the wrong order when the timestamps are exactly the same (in one of those tests they are dangerously close). If this happens again, let us know.

[snoyberg]

Cool, thanks @feuerbach.