Test failures on OSX #111

~/htdocs/react-stream master
❯ phpunit
PHPUnit 5.5.4 by Sebastian Bergmann and contributors.

............SSS.SSS.SSS.SSS.SSS.SSS.SSSFSSS.SSS.SSS............  63 / 154 ( 40%)
............................................................... 126 / 154 ( 81%)
...........................S                                    154 / 154 (100%)

Time: 3.6 seconds, Memory: 69.23MB

There was 1 failure:

1) React\Tests\Stream\DuplexResourceStreamIntegrationTest::testReadsMultipleChunksFromProcessPipe with data set #0 (Closure Object (...), Closure Object (...))
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'abc'
+'-n a
+-n b
+-n c
+'

/Users/andig/Documents/htdocs/react-stream/tests/DuplexResourceStreamIntegrationTest.php:263

FAILURES!
Tests: 154, Assertions: 228, Failures: 1, Skipped: 31.