Add print binary challenge

bit_manipulation/print_binary/test_print_binary.py

@@ -0,0 +1,25 @@
+from nose.tools import assert_equal
+
+
+class TestBits(object):
+
+    def test_print_binary(self):
+        bit = Bits()
+        assert_equal(bit.print_binary(None), 'ERROR')
+        assert_equal(bit.print_binary(0), 'ERROR')
+        assert_equal(bit.print_binary(1), 'ERROR')
+        num = 0.625
+        expected = '0.101'
+        assert_equal(bit.print_binary(num), expected)
+        num = 0.987654321
+        assert_equal(bit.print_binary(num), 'ERROR')
+        print('Success: test_print_binary')
+
+
+def main():
+    test = TestBits()
+    test.test_print_binary()
+
+
+if __name__ == '__main__':
+    main()