Fix #786: generator method fails with callable instance

2 files changed, 14 insertions, 2 deletions

diff --git a/nose/loader.py b/nose/loader.py
index 4152a12..8a85515 100644
--- a/nose/loader.py
+++ b/nose/loader.py
@@ -287,7 +287,7 @@ class TestLoader(unittest.TestLoader):
                         test_func = unbound_method(c, getattr(c, test_func))
                     if ismethod(test_func):
                         yield MethodTestCase(test_func, arg=arg, descriptor=g)
-                    elif isfunction(test_func):
+                    elif callable(test_func):
                         # In this case we're forcing the 'MethodTestCase'
                         # to run the inline function as its test call,
                         # but using the generator method as the 'method of
@@ -296,7 +296,7 @@ class TestLoader(unittest.TestLoader):
                     else:
                         yield Failure(
                             TypeError,
-                            "%s is not a function or method" % test_func)
+                            "%s is not a callable or method" % test_func)
             except KeyboardInterrupt:
                 raise
             except:
diff --git a/unit_tests/test_issue_786.py b/unit_tests/test_issue_786.py
new file mode 100644
index 0000000..5669be4
--- /dev/null
+++ b/unit_tests/test_issue_786.py
@@ -0,0 +1,12 @@
+def test_evens():
+    yield check_even_cls
+
+class Test(object):
+    def test_evens(self):
+        yield check_even_cls
+
+class Check(object):
+    def __call__(self):
+        pass
+
+check_even_cls = Check()