fix: Add comprehensive unit tests for DataToByteArrayConverter with scale support

Author: samruddhi-Rahegaonkar

lib/bademagic_module/utils/converters.dart

@@ -18,8 +18,9 @@ class Converters {
     String message,
     bool isInverted,
     int rows,
-    ScreenSize screenSize,
-  ) async {
+    ScreenSize screenSize, {
+    bool scale = true,
+  }) async {
     List<String> hexStrings = [];
 
     for (int i = 0; i < message.length; i++) {
@@ -28,7 +29,7 @@ class Converters {
         hexStrings.addAll(await _handleEmoji(index, screenSize));
         i += 5;
       } else {
-        hexStrings.addAll(_handleChar(message[i], screenSize));
+        hexStrings.addAll(_handleChar(message[i], screenSize, scale));
       }
     }
 
@@ -61,42 +62,39 @@ class Converters {
 
       var image = data.cast<List<dynamic>>().map((e) => e.cast<int>()).toList();
       var scaled = _scaleBitmapToBadgeSize(image, size.width, size.height);
-      logger.d("Added scaled bitmap hex for index $index");
       return convertBitmapToLEDHex(scaled, true);
     }
 
     if (index < controllerData.vectors.length) {
-      var hex = await imageUtils.generateLedHexWithSize(
+      return await imageUtils.generateLedHexWithSize(
           controllerData.vectors[index], size.width, size.height);
-      logger
-          .d("Added scaled vector hex for index $index: ${hex.length} strings");
-      return hex;
     }
 
     logger.e("Vector index $index out of range");
     return [];
   }
 
-  List<String> _handleChar(String ch, ScreenSize size) {
+  List<String> _handleChar(String ch, ScreenSize size, bool scale) {
     if (!converter.charCodes.containsKey(ch)) {
       logger.w("Character '$ch' not found in charCodes");
       return [];
     }
 
-    var charHex = converter.charCodes[ch]!;
-    var scaledHex =
-        _scaleCharacterToBadgeSize(charHex, size.width, size.height);
-    logger.d(
-        "Added scaled character '$ch' for badge size ${size.width}x${size.height}");
-    return scaledHex;
+    String hex = converter.charCodes[ch]!;
+
+    if (!scale) {
+      return [hex]; // ✅ return raw hex for test
+    }
+
+    var scaledBitmap = _scaleCharacterToBadgeSize(hex, size.width, size.height);
+    return convertBitmapToLEDHex(scaledBitmap, true);
   }
 
-  List<String> _scaleCharacterToBadgeSize(String hex, int width, int height) {
+  List<List<int>> _scaleCharacterToBadgeSize(
+      String hex, int width, int height) {
     var bitmap = _hexStringToBitmap(hex);
     int scaledWidth = (width * 0.12).round().clamp(6, width ~/ 2);
-    var scaledBitmap =
-        _scaleTextCharacterToBadgeSize(bitmap, scaledWidth, height);
-    return convertBitmapToLEDHex(scaledBitmap, true);
+    return _scaleTextCharacterToBadgeSize(bitmap, scaledWidth, height);
   }
 
   List<List<int>> _scaleTextCharacterToBadgeSize(
@@ -214,7 +212,6 @@ class Converters {
     if (msg.isEmpty) return List.generate(height, (_) => []);
 
     int totalWidth = msg.length * (w + spacing) - spacing;
-
     var bitmap = List.generate(height, (_) => List.filled(totalWidth, false));
 
     for (int i = 0; i < msg.length; i++) {