revise test of bool comparison of float vs string

Author: jreback

pandas/tests/frame/test_operators.py

@@ -316,14 +316,12 @@ def _check_unary_op(op):
         # operator.neg is deprecated in numpy >= 1.9
         _check_unary_op(operator.inv)
 
-    def test_logical_typeerror(self):
-        if not compat.PY3:
-            pytest.raises(TypeError, self.frame.__eq__, 'foo')
-            pytest.raises(TypeError, self.frame.__lt__, 'foo')
-            pytest.raises(TypeError, self.frame.__gt__, 'foo')
-            pytest.raises(TypeError, self.frame.__ne__, 'foo')
-        else:
-            pytest.skip('test_logical_typeerror not tested on PY3')
+    @pytest.mark.parametrize('op,res', [('__eq__', False),
+                                        ('__ne__', True)])
+    def test_logical_typeerror_with_non_valid(self, op, res):
+        # we are comparing floats vs a string
+        result = getattr(self.frame, op)('foo')
+        assert bool(result.all().all()) is res
 
     def test_logical_with_nas(self):
         d = DataFrame({'a': [np.nan, False], 'b': [True, True]})