moved java files for pre-convert

java_test/java/com/google/zxing/qrcode/decoder/DataMaskTestCase.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2007 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.qrcode.decoder;
+
+import com.google.zxing.common.BitMatrix;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author Sean Owen
+ */
+public final class DataMaskTestCase extends Assert {
+
+  @Test
+  public void testMask0() {
+    testMaskAcrossDimensions(0, (i, j) -> (i + j) % 2 == 0);
+  }
+
+  @Test
+  public void testMask1() {
+    testMaskAcrossDimensions(1, (i, j) -> i % 2 == 0);
+  }
+
+  @Test
+  public void testMask2() {
+    testMaskAcrossDimensions(2, (i, j) -> j % 3 == 0);
+  }
+
+  @Test
+  public void testMask3() {
+    testMaskAcrossDimensions(3, (i, j) -> (i + j) % 3 == 0);
+  }
+
+  @Test
+  public void testMask4() {
+    testMaskAcrossDimensions(4, (i, j) -> (i / 2 + j / 3) % 2 == 0);
+  }
+
+  @Test
+  public void testMask5() {
+    testMaskAcrossDimensions(5, (i, j) -> (i * j) % 2 + (i * j) % 3 == 0);
+  }
+
+  @Test
+  public void testMask6() {
+    testMaskAcrossDimensions(6, (i, j) -> ((i * j) % 2 + (i * j) % 3) % 2 == 0);
+  }
+
+  @Test
+  public void testMask7() {
+    testMaskAcrossDimensions(7, (i, j) -> ((i + j) % 2 + (i * j) % 3) % 2 == 0);
+  }
+
+  private static void testMaskAcrossDimensions(int reference, MaskCondition condition) {
+    DataMask mask = DataMask.values()[reference];
+    for (int version = 1; version <= 40; version++) {
+      int dimension = 17 + 4 * version;
+      testMask(mask, dimension, condition);
+    }
+  }
+
+  private static void testMask(DataMask mask, int dimension, MaskCondition condition) {
+    BitMatrix bits = new BitMatrix(dimension);
+    mask.unmaskBitMatrix(bits, dimension);
+    for (int i = 0; i < dimension; i++) {
+      for (int j = 0; j < dimension; j++) {
+        assertEquals(
+            "(" + i + ',' + j + ')',
+            condition.isMasked(i, j),
+            bits.get(j, i));
+      }
+    }
+  }
+
+  @FunctionalInterface
+  private interface MaskCondition {
+    boolean isMasked(int i, int j);
+  }
+
+}