code: /*
   * Copyright 2012-2018 Chronicle Map Contributors
   *
   * 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 net.openhft.lang.values;
  
  import net.openhft.chronicle.core.OS;
  import net.openhft.chronicle.core.pool.ClassAliasPool;
  import net.openhft.chronicle.core.util.Time;
  import net.openhft.chronicle.map.ChronicleMap;
  import net.openhft.chronicle.map.ChronicleMapBuilder;
  import org.json.JSONException;
  import org.junit.Test;
  import org.skyscreamer.jsonassert.JSONAssert;
  
  import java.io.File;
  import java.io.IOException;
  
  import static junit.framework.TestCase.assertSame;
  import static org.junit.Assert.assertEquals;
  
  public class ArrayTest {
  
      @Test
      public void test0() throws IOException, JSONException {
          ClassAliasPool.CLASS_ALIASES.addAlias(MovingAverageArray.class);
  
          File file = new File(OS.getTarget() + "/pf-PosistionsAndClose-" + Time.uniqueId());
  
          ChronicleMap<Long, MovingAverageArray> mapWrite = ChronicleMap
                  .of(Long.class, MovingAverageArray.class)
                  .entries(100)
                  .averageValue(createSampleWithSize(6, 0))
                  .createPersistedTo(file);
          mapWrite.put(1L, createSampleWithSize(6, 1));
          mapWrite.put(2L, createSampleWithSize(4, 2));
          mapWrite.close();
  
          ChronicleMap<Long, MovingAverageArray> mapRead = ChronicleMapBuilder
                  .of(Long.class, MovingAverageArray.class)
                  .createPersistedTo(file);
          MovingAverageArray m = mapRead.get(1L);
          assertJSONEqualsAfterPrefix("!MovingAverageArray {\n" +
                  "  values: [\n" +
                  "    { movingAverage: 0.1, high: 0.1, low: 0.1, stdDev: 0.1 },\n" +
                  "    { movingAverage: 1.1, high: 1.1, low: 1.1, stdDev: 1.1 },\n" +
                  "    { movingAverage: 2.1, high: 2.1, low: 2.1, stdDev: 2.1 },\n" +
                  "    { movingAverage: 3.1, high: 3.1, low: 3.1, stdDev: 3.1 },\n" +
                  "    { movingAverage: 4.1, high: 4.1, low: 4.1, stdDev: 4.1 },\n" +
                  "    { movingAverage: 5.1, high: 5.1, low: 5.1, stdDev: 5.1 }\n" +
                  "  ]\n" +
                  "}\n", m.toString());
          MovingAverageArray m2 = mapRead.getUsing(2L, m);
          assertSame(m, m2); // object is recycled, so no objects are created.
          assertJSONEqualsAfterPrefix("!MovingAverageArray {\n" +
                  "  values: [\n" +
                  "    { movingAverage: 0.2, high: 0.2, low: 0.2, stdDev: 0.2 },\n" +
                  "    { movingAverage: 1.2, high: 1.2, low: 1.2, stdDev: 1.2 },\n" +
                  "    { movingAverage: 2.2, high: 2.2, low: 2.2, stdDev: 2.2 },\n" +
                  "    { movingAverage: 3.2, high: 3.2, low: 3.2, stdDev: 3.2 }\n" +
                  "  ]\n" +
                  "}\n", m.toString());
      }
  
      private MovingAverageArray createSampleWithSize(int size, int seed) {
          MovingAverageArray sample = new MovingAverageArray();
          for (int i = 0; i < size; i++) {
              double value = i + seed / 10.0;
              sample.add(new MovingAverageCompact(value, value, value, value));
          }
          return sample;
      }
  
      private void assertJSONEqualsAfterPrefix(String s1, String s2) throws JSONException {
          String[] a1 = s1.split(" ", 2);
          String[] a2 = s2.split(" ", 2);
          assertEquals(a1[0], a2[0]);
          JSONAssert.assertEquals(a1[1], a2[1], false);
      }
  }
  