Add flip bit challenge

bit_manipulation/flip_bit/test_flip_bit.py

@@ -0,0 +1,29 @@
+from nose.tools import assert_equal, assert_raises
+
+
+class TestBits(object):
+
+    def test_flip_bit(self):
+        bits = Bits()
+        assert_raises(TypeError, bits.flip_bit, None)
+        assert_equal(bits.flip_bit(0), 1)
+        assert_equal(bits.flip_bit(-1), bits.MAX_BITS)
+        num = int('00001111110111011110001111110000', base=2)
+        expected = 10
+        assert_equal(bits.flip_bit(num), expected)
+        num = int('00000100111011101111100011111011', base=2)
+        expected = 9
+        assert_equal(bits.flip_bit(num), expected)
+        num = int('00010011101110111110001111101111', base=2)
+        expected = 10
+        assert_equal(bits.flip_bit(num), expected)
+        print('Success: test_print_binary')
+
+
+def main():
+    test = TestBits()
+    test.test_flip_bit()
+
+
+if __name__ == '__main__':
+    main()