Added tests

Author: kir1903

test_my_test.py

@@ -0,0 +1,2 @@
+def test_simple_math():
+    assert 2 + 2 == 4

test_palidrome.py

@@ -0,0 +1,9 @@
+from strings.palindrome import is_palindrome
+
+
+def test_palindrome_true():
+    assert is_palindrome("level") == True
+
+
+def test_palindrome_false():
+    assert is_palindrome("hello") == False