moved java files for pre-convert

java_test/java/com/google/zxing/InvertedLuminanceSourceTestCase.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2020 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.awt.image.BufferedImage;
+
+/**
+ * Tests {@link InvertedLuminanceSource}.
+ */
+public final class InvertedLuminanceSourceTestCase extends Assert {
+
+  @Test
+  public void testInverted() {
+    BufferedImage image = new BufferedImage(2, 1, BufferedImage.TYPE_INT_RGB);
+    image.setRGB(0, 0, 0xFFFFFF);
+    LuminanceSource source = new BufferedImageLuminanceSource(image);
+    assertArrayEquals(new byte[] { (byte) 0xFF, 0 }, source.getRow(0, null));
+    LuminanceSource inverted = new InvertedLuminanceSource(source);
+    assertArrayEquals(new byte[] { 0, (byte) 0xFF }, inverted.getRow(0, null));
+  }
+
+}