Sync and add reverse-string tests

exercises/practice/reverse-string/.meta/example.gd

@@ -1,5 +1,6 @@
-func reverse(str):
-	var result = ""
-	for i in range(str.length() - 1, -1, -1):
-		result += str[i]
-	return result
+func reverse(original):
+	var regex = RegEx.new()
+	regex.compile("\\X")
+	var clusters = regex.search_all(original).map(func(m): return m.get_string())
+	clusters.reverse()
+	return "".join(clusters)

exercises/practice/reverse-string/.meta/tests.toml

@@ -26,3 +26,12 @@ description = "a palindrome"
 
 [b9e7dec1-c6df-40bd-9fa3-cd7ded010c4c]
 description = "an even-sized word"
+
+[1bed0f8a-13b0-4bd3-9d59-3d0593326fa2]
+description = "wide characters"
+
+[93d7e1b8-f60f-4f3c-9559-4056e10d2ead]
+description = "grapheme cluster with pre-combined form"
+
+[1028b2c1-6763-4459-8540-2da47ca512d9]
+description = "grapheme clusters"

exercises/practice/reverse-string/reverse_string_test.gd

@@ -1,34 +1,52 @@
-func test_empty_string(solution_script):
-	var str = ""
+func test_empty_originaling(solution_script):
+	var original = ""
 	var expected = ""
-	return [solution_script.reverse(str), expected]
+	return [solution_script.reverse(original), expected]
 
 
 func test_a_word(solution_script):
-	var str = "robot"
+	var original = "robot"
 	var expected = "tobor"
-	return [solution_script.reverse(str), expected]
+	return [solution_script.reverse(original), expected]
 
 
 func test_a_capitalized_word(solution_script):
-	var str = "Ramen"
+	var original = "Ramen"
 	var expected = "nemaR"
-	return [solution_script.reverse(str), expected]
+	return [solution_script.reverse(original), expected]
 
 
 func test_a_sentence_with_punctuation(solution_script):
-	var str = "I'm hungry!"
+	var original = "I'm hungry!"
 	var expected = "!yrgnuh m'I"
-	return [solution_script.reverse(str), expected]
+	return [solution_script.reverse(original), expected]
 
 
 func test_a_palindrome(solution_script):
-	var str = "racecar"
+	var original = "racecar"
 	var expected = "racecar"
-	return [solution_script.reverse(str), expected]
+	return [solution_script.reverse(original), expected]
 
 
 func test_an_even_sized_word(solution_script):
-	var str = "drawer"
+	var original = "drawer"
 	var expected = "reward"
-	return [solution_script.reverse(str), expected]
+	return [solution_script.reverse(original), expected]
+
+
+func test_wide_characters(solution_script):
+	var original = "子猫"
+	var expected = "猫子"
+	return [solution_script.reverse(original), expected]
+
+
+func test_grapheme_cluster_with_pre_combined_form(solution_script):
+	var original = "Würstchenstand"
+	var expected = "dnatsnehctsrüW"
+	return [solution_script.reverse(original), expected]
+
+
+func test_grapheme_clusters(solution_script):
+	var original = "ผู้เขียนโปรแกรม"
+	var expected = "มรกแรปโนยขีเผู้"
+	return [solution_script.reverse(original), expected]