Fixed race condition with SkipTest when module not in sys.modules on collection.

_pytest/main.py

@@ -408,10 +408,6 @@ class Collector(Node):
         and thus iteratively build a tree.
     """
 
-    # the set of exceptions to interpret as "Skip the whole module" during
-    # collection
-    skip_exceptions = (Skipped,)
-
     class CollectError(Exception):
         """ an error during collection, contains a custom message. """
 

_pytest/nose.py

@@ -1,17 +1,32 @@
 """ run test suites written for nose. """
 
-import pytest, py
 import sys
+
+import py
+import pytest
 from _pytest import unittest
 
+
+def get_skip_exceptions():
+    skip_classes = set()
+    for module_name in ('unittest', 'unittest2', 'nose'):
+        mod = sys.modules.get(module_name)
+        if hasattr(mod, 'SkipTest'):
+            skip_classes.add(mod.SkipTest)
+    return tuple(skip_classes)
+
+
 def pytest_runtest_makereport(__multicall__, item, call):
-    SkipTest = getattr(sys.modules.get('nose', None), 'SkipTest', None)
-    if SkipTest:
-        if call.excinfo and call.excinfo.errisinstance(SkipTest):
+    if not call.excinfo:
+        return
+
+    for skip_exc in get_skip_exceptions():
+        if call.excinfo.errisinstance(skip_exc):
             # let's substitute the excinfo with a pytest.skip one
             call2 = call.__class__(lambda:
                         pytest.skip(str(call.excinfo.value)), call.when)
             call.excinfo = call2.excinfo
+            return
 
 
 @pytest.mark.trylast
@@ -38,13 +53,8 @@ def teardown_nose(item):
         #    #call_optional(item._nosegensetup, 'teardown')
         #    del item.parent._nosegensetup
 
+
 def pytest_make_collect_report(collector):
-    SkipTest = getattr(sys.modules.get('unittest', None), 'SkipTest', None)
-    if SkipTest is not None:
-        collector.skip_exceptions += (SkipTest,)
-    SkipTest = getattr(sys.modules.get('nose', None), 'SkipTest', None)
-    if SkipTest is not None:
-        collector.skip_exceptions += (SkipTest,)
     if isinstance(collector, pytest.Generator):
         call_optional(collector.obj, 'setup')
 

_pytest/runner.py

@@ -267,7 +267,9 @@ def pytest_make_collect_report(collector):
     if not call.excinfo:
         outcome = "passed"
     else:
-        if call.excinfo.errisinstance(collector.skip_exceptions):
+        from _pytest import nose
+        skip_exceptions = (Skipped,) + nose.get_skip_exceptions()
+        if call.excinfo.errisinstance(skip_exceptions):
             outcome = "skipped"
             r = collector._repr_failure_py(call.excinfo, "line").reprcrash
             longrepr = (str(r.path), r.lineno, r.message)

testing/test_nose.py

@@ -330,12 +330,26 @@ def test_setup_teardown_linking_issue265(testdir):
     reprec = testdir.inline_run()
     reprec.assertoutcome(passed=1, skipped=1)
 
+
 def test_SkipTest_during_collection(testdir):
-    testdir.makepyfile("""
+    p = testdir.makepyfile("""
         import nose
         raise nose.SkipTest("during collection")
         def test_failing():
             assert False
         """)
+    result = testdir.runpytest(p)
+    outcome = result.parseoutcomes()
+    outcome.pop('seconds')
+    assert outcome == dict(skipped=1)
+
+
+def test_SkipTest_in_test(testdir):
+    testdir.makepyfile("""
+        import nose
+
+        def test_skipping():
+            raise nose.SkipTest("in test")
+        """)
     reprec = testdir.inline_run()
     reprec.assertoutcome(skipped=1)