[16.01] More robust test_lazy_process.

Hopefully this will fix a transiently failing test (I've only seen in fail on OS X).

test/unit/test_lazy_process.py

@@ -1,3 +1,4 @@
+"""Unit module for LazyProcess object in galaxy.util.lazy_process."""
 import os
 import tempfile
 import time
@@ -6,6 +7,7 @@ from galaxy.util.lazy_process import LazyProcess
 
 
 def test_lazy_process():
+    """Create process, ensure start_process starts it and shutdown kills it."""
     t = tempfile.NamedTemporaryFile()
     os.remove(t.name)
     lazy_process = LazyProcess(["bash", "-c", "touch %s; sleep 100" % t.name])
@@ -15,4 +17,10 @@ def test_lazy_process():
         time.sleep(.01)
     assert lazy_process.process.poll() is None
     lazy_process.shutdown()
-    assert lazy_process.process.poll()
+    ret_val = None
+    for i in range(10):
+        ret_val = lazy_process.process.poll()
+        if ret_val is not None:
+            break
+        time.sleep(.01)
+    assert ret_val is not None