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1   /**
2    * Copyright (c) 2004-2011 QOS.ch
3    * All rights reserved.
4    *
5    * Permission is hereby granted, free  of charge, to any person obtaining
6    * a  copy  of this  software  and  associated  documentation files  (the
7    * "Software"), to  deal in  the Software without  restriction, including
8    * without limitation  the rights to  use, copy, modify,  merge, publish,
9    * distribute,  sublicense, and/or sell  copies of  the Software,  and to
10   * permit persons to whom the Software  is furnished to do so, subject to
11   * the following conditions:
12   *
13   * The  above  copyright  notice  and  this permission  notice  shall  be
14   * included in all copies or substantial portions of the Software.
15   *
16   * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
17   * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
18   * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
19   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21   * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
22   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23   *
24   */
25  package org.slf4j.profiler;
26  
27  import junit.framework.TestCase;
28  
29  import org.slf4j.Logger;
30  import org.slf4j.LoggerFactory;
31  
32  public class ProfilerTest extends TestCase {
33  
34      Logger logger = LoggerFactory.getLogger(ProfilerTest.class);
35  
36      public void setUp() throws Exception {
37          super.setUp();
38      }
39  
40      public void testSmoke() {
41          Profiler profiler = new Profiler("SMOKE");
42          profiler.stop();
43          StopWatch gSW = profiler.globalStopWatch;
44  
45          // verify
46          profiler.sanityCheck();
47          assertEquals(TimeInstrumentStatus.STOPPED, gSW.status);
48          assertEquals(0, profiler.childTimeInstrumentList.size());
49          assertNull(profiler.getLastTimeInstrument());
50      }
51  
52      public void testBasicProfiling() {
53          Profiler profiler = new Profiler("BAS");
54  
55          profiler.start("doX");
56          doX(1);
57  
58          profiler.start("doY");
59          doY(10);
60  
61          profiler.start("doZ");
62          doZ(2);
63          profiler.stop();
64  
65          // verify
66          profiler.sanityCheck();
67          StopWatch gSW = profiler.globalStopWatch;
68          assertEquals(TimeInstrumentStatus.STOPPED, gSW.status);
69          assertEquals(3, profiler.childTimeInstrumentList.size());
70          assertNotNull(profiler.getLastTimeInstrument());
71          assertEquals("doZ", profiler.getLastTimeInstrument().getName());
72      }
73  
74      // + Profiler [BAS]
75      // |-- elapsed time [doX] 1.272 milliseconds.
76      // |-- elapsed time [doYYYYY] 25.398 milliseconds.
77      // |--+ Profiler [subtask]
78      // |-- elapsed time [n1] 1.434 milliseconds.
79      // |-- elapsed time [n2] 5.855 milliseconds.
80      // |-- Total elapsed time [subtask] 7.321 milliseconds.
81      // |-- elapsed time [doZ] 3.211 milliseconds.
82      // |-- Total elapsed time [BAS] 30.317 milliseconds.
83      public void testNestedProfiling() {
84  
85          Profiler profiler = new Profiler("BAS");
86          profiler.setLogger(logger);
87          profiler.start("doX");
88          doX(1);
89  
90          profiler.start("doYYYYY");
91          for (int i = 0; i < 5; i++) {
92              doY(i);
93          }
94          Profiler nested = profiler.startNested("subtask");
95          doSubtask(nested);
96          profiler.start("doZ");
97          doZ(2);
98          profiler.stop();
99  
100         // verify
101         profiler.sanityCheck();
102         StopWatch gSW = profiler.globalStopWatch;
103         assertEquals(TimeInstrumentStatus.STOPPED, gSW.status);
104         // assertEquals(3, profiler.stopwatchList.size());
105         assertEquals(4, profiler.childTimeInstrumentList.size());
106         assertNotNull(profiler.getLastTimeInstrument());
107         assertEquals("doZ", profiler.getLastTimeInstrument().getName());
108 
109     }
110 
111     private void doX(int millis) {
112         delay(millis);
113     }
114 
115     private void doY(int millis) {
116         delay(millis);
117     }
118 
119     private void doZ(int millis) {
120         delay(millis);
121     }
122 
123     public void doSubtask(Profiler nested) {
124         nested.start("n1");
125         doX(1);
126 
127         nested.start("n2");
128         doX(5);
129         nested.stop();
130     }
131 
132     void delay(int millis) {
133         try {
134             Thread.sleep(millis);
135         } catch (InterruptedException e) {
136         }
137     }
138 }