Write palindrome exercise

palindromes.lua

@@ -0,0 +1,34 @@
+-- Solution --------------------------------------------------------------------
+function is_palindrome(str)
+	-- Your implementation here
+end
+
+-- Tests -----------------------------------------------------------------------
+
+local luaunit = require("luaunit.luaunit")
+
+function test_foo_is_not_palindrome()
+	luaunit.assertFalse(is_palindrome("foo"))
+end
+
+function test_wow_is_palindrome()
+	luaunit.assertTrue(is_palindrome("wow"))
+end
+
+function test_toast_is_not_palindrome()
+	luaunit.assertFalse(is_palindrome("toast"))
+end
+
+function test_Racecar_is_palindrome()
+	luaunit.assertTrue(is_palindrome("Race car"))
+end
+
+function test_Do_geese_see_God_is_palindrome()
+	luaunit.assertTrue(is_palindrome("Do geese see God?"))
+end
+
+function test_No_lemons_no_melon_is_palindrome()
+	luaunit.assertTrue(is_palindrome("No lemons, no melon."))
+end
+
+os.exit(luaunit.LuaUnit.run())