implemented dynamic quick reactions by surfacing emojis from message content in the chat options dialog

test/utils/emoji_detection_test.dart

@@ -59,4 +59,52 @@ void main() {
       expect(standaloneEmojiFontSize('123'), isNull);
     });
   });
+
+  group('extractEmojis', () {
+    test('returns empty list for plain text', () {
+      expect(extractEmojis('Hallo Welt'), isEmpty);
+      expect(extractEmojis(''), isEmpty);
+    });
+
+    test('extracts emojis from mixed text, ties keep first appearance', () {
+      expect(extractEmojis('Super 👍 gemacht 🎉'), ['👍', '🎉']);
+    });
+
+    test('sorts by frequency, most-frequent first', () {
+      // 🎉 appears first but 👍 occurs more often → 👍 wins.
+      expect(extractEmojis('🎉 👍 super 👍'), ['👍', '🎉']);
+    });
+
+    test('dedupes repeated emojis, most-frequent first', () {
+      expect(extractEmojis('😀 😀 🚀 😀'), ['😀', '🚀']);
+    });
+
+    test('extracts composite emojis as single entries', () {
+      expect(extractEmojis('Familie 👨‍👩‍👧‍👦 und 👍🏽'), ['👨‍👩‍👧‍👦', '👍🏽']);
+    });
+
+    test('extracts flag emojis', () {
+      expect(extractEmojis('Hallo 🇩🇪'), ['🇩🇪']);
+    });
+  });
+
+  group('emojiSkinToneNeutral', () {
+    test('strips skin-tone modifiers', () {
+      expect(emojiSkinToneNeutral('👍🏻'), '👍');
+      expect(emojiSkinToneNeutral('👍🏿'), '👍');
+    });
+
+    test('leaves emojis without skin tone unchanged', () {
+      expect(emojiSkinToneNeutral('👍'), '👍');
+      expect(emojiSkinToneNeutral('❤️'), '❤️');
+      expect(emojiSkinToneNeutral('🎉'), '🎉');
+    });
+
+    test('tone variants compare equal after normalization', () {
+      expect(
+        emojiSkinToneNeutral('👍🏻'),
+        emojiSkinToneNeutral('👍🏽'),
+      );
+    });
+  });
 }