added ImageLoaderBarcodeTest

barcode4j-xgc/src/main/java/org/krysalis/barcode4j/image/loader/ImageBarcode.java

@@ -39,8 +39,8 @@ public class ImageBarcode extends AbstractImage {
 
     static final Object MESSAGE = "Message";
 
-    private Configuration barcodeXML;
-    private BarcodeDimension bardim;
+    private final Configuration barcodeXML;
+    private final BarcodeDimension bardim;
 
     /**
      * Main constructor.

barcode4j-xgc/src/test/java/org/krysalis/barcode4j/image/loader/ImageLoaderBarcodeTest.java

@@ -0,0 +1,50 @@
+package org.krysalis.barcode4j.image.loader;
+
+import org.apache.xmlgraphics.image.loader.Image;
+import org.apache.xmlgraphics.image.loader.ImageException;
+import org.apache.xmlgraphics.image.loader.ImageFlavor;
+import org.apache.xmlgraphics.image.loader.ImageInfo;
+import org.apache.xmlgraphics.image.loader.spi.ImageLoader;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class ImageLoaderBarcodeTest {
+
+    @Test
+    @DisplayName("Should load original ImageBarcode when instantiated with BARCODE_IMAGE_FLAVOR target")
+    void testSupportedTargetFlavor_Barcode4jImageFlavor() throws ImageException, IOException {
+        final ImageBarcode originalImage = mock(ImageBarcode.class);
+
+        final ImageInfo info = mock(ImageInfo.class);
+        when(info.getOriginalImage()).thenReturn(originalImage);
+
+        final ImageLoader loader = new ImageLoaderBarcode(ImageBarcode.BARCODE_IMAGE_FLAVOR);
+
+        final Image result = loader.loadImage(info, null, null);
+
+        assertNotNull(result);
+        assertEquals(originalImage, result);
+    }
+
+    @Test
+    @DisplayName("Should throw IllegalArgumentException with target flavor: BUFFERED_IMAGE")
+    void testUnsupportedTargetFlavor_BufferedImage() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            new ImageLoaderBarcode(ImageFlavor.BUFFERED_IMAGE);
+        });
+    }
+
+    @Test
+    @DisplayName("Should throw IllegalArgumentException with target flavor: RENDERED_IMAGE")
+    void testUnsupportedTargetFlavor_RenderedImage() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            new ImageLoaderBarcode(ImageFlavor.RENDERED_IMAGE);
+        });
+    }
+}