1 /**
2  * Copyright (c) 2008, http://www.snakeyaml.org
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.yaml.snakeyaml.stress;
17 
18 import junit.framework.Test;
19 import junit.framework.TestCase;
20 import junit.framework.TestSuite;
21 
22 import org.yaml.snakeyaml.Invoice;
23 import org.yaml.snakeyaml.Util;
24 import org.yaml.snakeyaml.Yaml;
25 import org.yaml.snakeyaml.constructor.Constructor;
26 
27 public class StressTest extends TestCase {
28     String doc;
29 
main(String args[])30     public static void main(String args[]) {
31         junit.textui.TestRunner.run(suite());
32     }
33 
suite()34     public static Test suite() {
35         return new TestSuite(StressTest.class);
36     }
37 
setUp()38     public void setUp() {
39         doc = Util.getLocalResource("specification/example2_27.yaml");
40     }
41 
testPerformance()42     public void testPerformance() {
43         long time1 = System.nanoTime();
44         new Yaml(new Constructor(Invoice.class));
45         long time2 = System.nanoTime();
46         float duration = (time2 - time1) / 1000000;
47         System.out.println("Init was " + duration + " ms.");
48 
49         Yaml loader = new Yaml();
50         time1 = System.nanoTime();
51         loader.loadAs(doc, Invoice.class);
52         time2 = System.nanoTime();
53         duration = (time2 - time1) / 1000000;
54         System.out.println("\nSingle load was " + duration + " ms.");
55 
56         loader = new Yaml();
57         int[] range = new int[] { 1000, 2000 /* , 4000, 8000 */};
58         System.out.println("\nOne instance.");
59         for (int number : range) {
60             time1 = System.nanoTime();
61             for (int i = 0; i < number; i++) {
62                 loader.loadAs(doc, Invoice.class);
63             }
64             time2 = System.nanoTime();
65             duration = ((time2 - time1) / 1000000) / (float) number;
66             System.out.println("Duration for r=" + number + " was " + duration + " ms/load.");
67             // cobertura may make it very slow
68             if (duration > 3) {
69                 System.err.println("!!!!!! Too long. Expected <1 but was " + duration);
70             }
71             // assertTrue("duration=" + duration, duration < 3);
72         }
73 
74         System.out.println("\nMany instances.");
75         for (int number : range) {
76             time1 = System.nanoTime();
77             for (int i = 0; i < number; i++) {
78                 loader = new Yaml();
79                 loader.loadAs(doc, Invoice.class);
80             }
81             time2 = System.nanoTime();
82             duration = ((time2 - time1) / 1000000) / (float) number;
83             System.out.println("Duration for r=" + number + " was " + duration + " ms/load.");
84             // cobertura may make it very slow
85             if (duration > 3) {
86                 System.err.println("!!!!!! Too long. Expected <1 but was " + duration);
87             }
88             // assertTrue("duration=" + duration, duration < 3);
89         }
90     }
91 }