[svn r62430] honour unitttest function default values for pyfuncarg protocol

--HG--
branch : trunk

py/test/pycollect.py

@@ -360,8 +360,18 @@ class Function(FunctionMixin, py.test.collect.Item):
             # standard Python Test function/method case  
             funcobj = self.obj 
             startindex = getattr(funcobj, 'im_self', None) and 1 or 0 
-            for argname in py.std.inspect.getargs(self.obj.func_code)[0][startindex:]:
+            argnames = py.std.inspect.getargs(self.obj.func_code)[0]
+            for i, argname in py.builtin.enumerate(argnames):
+                if i < startindex:
+                    continue 
+                try:
                     kwargs[argname] = self.lookup_onearg(argname)
+                except LookupError, e:
+                    numdefaults = len(funcobj.func_defaults or ()) 
+                    if i + numdefaults >= len(argnames):
+                        continue # continue # seems that our args have defaults 
+                    else:
+                        raise
         else:
             pass # XXX lookup of arguments for yielded/generated tests as well 
         return kwargs

py/test/testing/test_pycollect.py

@@ -229,9 +229,30 @@ class TestFunction:
         assert not f1 != f1_b
 
     def test_pyfuncarg_lookupfails(self, testdir):
-        item = testdir.getitem("def test_func(some, other): pass")
+        item = testdir.getitem("def test_func(some): pass")
         kw = py.test.raises(LookupError, "item.lookup_allargs()")
 
+    def test_pyfuncarg_lookup_default(self, testdir):
+        item = testdir.getitem("def test_func(some, other=42): pass")
+        class Provider:
+            def pytest_pyfuncarg_some(self, pyfuncitem):
+                return pyfuncitem.name 
+        item._config.pytestplugins.register(Provider())
+        kw = item.lookup_allargs()
+        assert len(kw) == 1
+
+    def test_pyfuncarg_lookup_default_gets_overriden(self, testdir):
+        item = testdir.getitem("def test_func(some=42, other=13): pass")
+        class Provider:
+            def pytest_pyfuncarg_other(self, pyfuncitem):
+                return pyfuncitem.name 
+        item._config.pytestplugins.register(Provider())
+        kw = item.lookup_allargs()
+        assert len(kw) == 1
+        name, value = kw.popitem()
+        assert name == "other"
+        assert value == item.name 
+
     def test_pyfuncarg_basic(self, testdir):
         item = testdir.getitem("def test_func(some, other): pass")
         class Provider: