ags3: add a few utf-8 string tests

adds tests for AppendChar, CompareTo, EndsWith, IndexOf, LowerCase, Replace and ReplaceCharAt

ags3/auto-test/test-string.asc

@@ -1,7 +1,7 @@
 // Test String Module Script
 int GetTestStringCount()
 {
-  return 23;
+  return 31;
 }
 
 void TestString()
@@ -12,6 +12,11 @@ void TestString()
     String mytext = "Hello";
     mytext = mytext.Append("World");
     tap.is(mytext, "HelloWorld", "String.Append test");
+
+    // UTF-8 specific test
+    String utfText = "Hell";
+    utfText = utfText.AppendChar('ä');  // Append a UTF-8 character
+    tap.is(utfText, "Hellä", "String.AppendChar UTF-8 test");
   }
 
   // String.AppendChar
@@ -26,6 +31,11 @@ void TestString()
     String mytext = "Hello";
     tap.ok(mytext.CompareTo("hello",eCaseInsensitive) == 0,  "String.CompareTo sensitivity off");
     tap.ok(mytext.CompareTo("hello",eCaseSensitive) != 0,  "String.CompareTo sensitivity on");
+
+    // UTF-8 specific test
+    String utfText = "ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞĀĂĄĆĈĊČĎĐĒĔĖĘĚĜĞĠĢĤĦĨĪÜ";
+    tap.ok(utfText.CompareTo("àáâãäåçèéêëìíîïðñòóôõöøùúûüýþāăąćĉċčďđēĕėęěĝğġģĥħĩīü", eCaseInsensitive) == 0, "String.CompareTo UTF-8 sensitivity off");
+    tap.ok(utfText.CompareTo("àáâãäåçèéêëìíîïðñòóôõöøùúûüýþāăąćĉċčďđēĕėęěĝğġģĥħĩīü", eCaseSensitive) != 0, "String.CompareTo UTF-8 sensitivity on");
   }
 
   // String.Copy
@@ -39,6 +49,10 @@ void TestString()
   {
     String myString = "Hello from the script!";
     tap.ok(myString.EndsWith("script!"), "String.EndsWith test");
+
+    // UTF-8 specific test
+    String utfString = "Grüße von MÜNCHEN!";
+    tap.ok(utfString.EndsWith("münchen!", eCaseInsensitive), "String.EndsWith UTF-8 test");
   }
 
   // String.Format
@@ -55,6 +69,11 @@ void TestString()
     String haystack = "The haystack had a needle in it somewhere.";
     int result = haystack.IndexOf("a needle");
     tap.is_int(result, 17, "String.IndexOf test");
+
+    // UTF-8 specific test
+    String utfHaystack = "The haystack had a ĄĆĈĊČĎĐĒĔĖĘĚĜĞĠĢĤĦĨ and a needle in it somewhere..";
+    int utfResult = utfHaystack.IndexOf("a needle");
+    tap.is_int(utfResult, 43, "String.IndexOf UTF-8 test");
   }
 
   // String.IsNullOrEmpty
@@ -72,20 +91,35 @@ void TestString()
     String mystring = "THIS is a test string";
     String lowercased = mystring.LowerCase();
     tap.is(lowercased, "this is a test string", "String.LowerCase test");
+
+    // UTF-8 specific test
+    String utfString = "FUßGÄNGERÜBERGÄNGE";
+    String utfLowercased = utfString.LowerCase();
+    tap.is(utfLowercased, "fußgängerübergänge", "String.LowerCase UTF-8 test");
   }
 
   // String.Replace
   {
     String original = "Hello from the script!";
     String changed = original.Replace("hello", "goodbye");
     tap.is(changed, "goodbye from the script!", "String.Replace test");
+
+    // UTF-8 specific test
+    String utfOriginal = "Grüße vom München!";
+    String utfChanged = utfOriginal.Replace("München", "Berlin");
+    tap.is(utfChanged, "Grüße vom Berlin!", "String.Replace UTF-8 test");
   }
 
   // String.ReplaceCharAt
   {
     String mystring = "Hello";
     String changed = mystring.ReplaceCharAt(2, 'm');
-    tap.is(changed, "Hemlo", "String.ReplaceCharAt test");    
+    tap.is(changed, "Hemlo", "String.ReplaceCharAt test");
+
+    // UTF-8 specific test
+    String utfString = "ĄĆĈĊČĎĐĒĔĖĘĚĜĞĠĢĤĦĨ";
+    String utfChanged = utfString.ReplaceCharAt(3, 's');  // Replacing 'Ċ' with 's'
+    tap.is(utfChanged, "ĄĆĈsČĎĐĒĔĖĘĚĜĞĠĢĤĦĨ", "String.ReplaceCharAt UTF-8 test");
   }
 
   // String.StartsWith