Uploaded Test files

venv/Lib/site-packages/IPython/utils/tests/test_dir2.py

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+import nose.tools as nt
+from IPython.utils.dir2 import dir2
+
+
+class Base(object):
+    x = 1
+    z = 23
+
+
+def test_base():
+    res = dir2(Base())
+    assert ('x' in res)
+    assert ('z' in res)
+    assert ('y' not in res)
+    assert ('__class__' in res)
+    nt.assert_equal(res.count('x'), 1)
+    nt.assert_equal(res.count('__class__'), 1)
+
+def test_SubClass():
+
+    class SubClass(Base):
+        y = 2
+
+    res = dir2(SubClass())
+    assert ('y' in res)
+    nt.assert_equal(res.count('y'), 1)
+    nt.assert_equal(res.count('x'), 1)
+
+
+def test_SubClass_with_trait_names_attr():
+    # usecase: trait_names is used in a class describing psychological classification
+
+    class SubClass(Base):
+        y = 2
+        trait_names = 44
+
+    res = dir2(SubClass())
+    assert('trait_names' in res)
+
+
+def test_misbehaving_object_without_trait_names():
+    # dir2 shouldn't raise even when objects are dumb and raise
+    # something other than AttribteErrors on bad getattr.
+
+    class MisbehavingGetattr(object):
+        def __getattr__(self):
+            raise KeyError("I should be caught")
+
+        def some_method(self):
+            pass
+
+    class SillierWithDir(MisbehavingGetattr):
+        def __dir__(self):
+            return ['some_method']
+
+    for bad_klass in (MisbehavingGetattr, SillierWithDir):
+        res = dir2(bad_klass())
+        assert('some_method' in res)