Test file run twice fails if it contains marked class #683

_pytest/python.py

@@ -480,6 +480,19 @@ class FuncFixtureInfo:
         self.names_closure = names_closure
         self.name2fixturedefs = name2fixturedefs
 
+
+def _marked(func, mark):
+    """Returns True if :func: is already marked with :mark:, False orherwise.
+    This can happen if marker is applied to class and the test file is
+    invoked more than once.
+    """
+    try:
+        func_mark = getattr(func, mark.name)
+    except AttributeError:
+        return False
+    return mark.args == func_mark.args and mark.kwargs == func_mark.kwargs
+
+
 def transfer_markers(funcobj, cls, mod):
     # XXX this should rather be code in the mark plugin or the mark
     # plugin should merge with the python plugin.
@@ -490,9 +503,11 @@ def transfer_markers(funcobj, cls, mod):
             continue
         if isinstance(pytestmark, list):
             for mark in pytestmark:
-                mark(funcobj)
+                if not _marked(funcobj, mark):
+                    mark(funcobj)
         else:
-            pytestmark(funcobj)
+            if not _marked(funcobj, pytestmark):
+                pytestmark(funcobj)
 
 class Module(pytest.File, PyCollector):
     """ Collector for test classes and functions. """

testing/test_mark.py

@@ -1,3 +1,5 @@
+import os
+
 import py, pytest
 from _pytest.mark import MarkGenerator as Mark
 
@@ -84,6 +86,22 @@ class TestMark:
         assert g.some.kwargs['reason2'] == "456"
 
 
+def test_marked_class_run_twice(testdir, request):
+    """Test fails file is run twice that contains marked class.
+    See issue#683.
+    """
+    py_file = testdir.makepyfile("""
+    import pytest
+    @pytest.mark.parametrize('abc', [1, 2, 3])
+    class Test1(object):
+        def test_1(self, abc):
+            assert abc in [1, 2, 3]
+    """)
+    file_name = os.path.basename(py_file.strpath)
+    rec = testdir.inline_run(file_name, file_name)
+    rec.assertoutcome(passed=6)
+
+
 def test_ini_markers(testdir):
     testdir.makeini("""
         [pytest]