/**
 * Copyright (c) 2008, SnakeYAML
 *
 * 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 org.yaml.snakeyaml.stress;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.yaml.snakeyaml.Invoice;
import org.yaml.snakeyaml.Util;
import org.yaml.snakeyaml.Yaml;

public class StressEmitterTest extends TestCase {

  public static void main(String[] args) {
    junit.textui.TestRunner.run(suite());
  }

  public static Test suite() {
    return new TestSuite(StressEmitterTest.class);
  }

  public void testPerformance() {
    Yaml loader = new Yaml();
    Invoice invoice =
        loader.loadAs(Util.getLocalResource("specification/example2_27.yaml"), Invoice.class);
    Yaml dumper = new Yaml();
    long time1 = System.nanoTime();
    dumper.dumpAsMap(invoice);
    long time2 = System.nanoTime();
    float duration = (time2 - time1) / 1000000;
    System.out.println("\nSingle dump was " + duration + " ms.");

    int[] range = new int[] {1000, 2000 /* , 8000 */};
    System.out.println("\nOne instance.");
    for (int number : range) {
      time1 = System.nanoTime();
      for (int i = 0; i < number; i++) {
        dumper.dump(invoice);
      }
      time2 = System.nanoTime();
      duration = ((time2 - time1) / 1000000) / (float) number;
      System.out.println("Duration for r=" + number + " was " + duration + " ms/dump.");
      if (duration > 3) {
        System.err.println("!!!!!! Too long. Expected <1 but was " + duration);
      }
    }

    System.out.println("\nMany instances.");
    for (int number : range) {
      time1 = System.nanoTime();
      for (int i = 0; i < number; i++) {
        dumper = new Yaml();
        dumper.dumpAsMap(invoice);
      }
      time2 = System.nanoTime();
      duration = ((time2 - time1) / 1000000) / (float) number;
      System.out.println("Duration for r=" + number + " was " + duration + " ms/dump.");
      if (duration > 3) {
        System.err.println("!!!!!! Too long. Expected <1 but was " + duration);
      }
      // assertTrue("duration=" + duration, duration < 3);
    }
  }
}
