moved java files for pre-convert

java_test/java/com/google/zxing/common/detector/MathUtilsTestCase.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2014 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.common.detector;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Tests {@link MathUtils}.
+ */
+public final class MathUtilsTestCase extends Assert {
+
+  private static final float EPSILON = 1.0E-8f;
+
+  @Test
+  public void testRound() {
+    assertEquals(-1, MathUtils.round(-1.0f));
+    assertEquals(0, MathUtils.round(0.0f));
+    assertEquals(1, MathUtils.round(1.0f));
+
+    assertEquals(2, MathUtils.round(1.9f));
+    assertEquals(2, MathUtils.round(2.1f));
+
+    assertEquals(3, MathUtils.round(2.5f));
+
+    assertEquals(-2, MathUtils.round(-1.9f));
+    assertEquals(-2, MathUtils.round(-2.1f));
+
+    assertEquals(-3, MathUtils.round(-2.5f)); // This differs from Math.round()
+
+    assertEquals(Integer.MAX_VALUE, MathUtils.round(Integer.MAX_VALUE));
+    assertEquals(Integer.MIN_VALUE, MathUtils.round(Integer.MIN_VALUE));
+
+    assertEquals(Integer.MAX_VALUE, MathUtils.round(Float.POSITIVE_INFINITY));
+    assertEquals(Integer.MIN_VALUE, MathUtils.round(Float.NEGATIVE_INFINITY));
+
+    assertEquals(0, MathUtils.round(Float.NaN));
+  }
+
+  @Test
+  public void testDistance() {
+    assertEquals((float) Math.sqrt(8.0), MathUtils.distance(1.0f, 2.0f, 3.0f, 4.0f), EPSILON);
+    assertEquals(0.0f, MathUtils.distance(1.0f, 2.0f, 1.0f, 2.0f), EPSILON);
+
+    assertEquals((float) Math.sqrt(8.0), MathUtils.distance(1, 2, 3, 4), EPSILON);
+    assertEquals(0.0f, MathUtils.distance(1, 2, 1, 2), EPSILON);
+  }
+
+  @Test
+  public void testSum() {
+    assertEquals(0, MathUtils.sum(new int[] {}));
+    assertEquals(1, MathUtils.sum(new int[] {1}));
+    assertEquals(4, MathUtils.sum(new int[] {1, 3}));
+    assertEquals(0, MathUtils.sum(new int[] {-1, 1}));
+  }
+
+}