Mercurial > hg > Members > kono > jpf-core

comparison src/main/gov/nasa/jpf/util/event/TestEventTree.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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-1:000000000000 0:61d41facf527
1 /*
2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
4 * All rights reserved.
5 *
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0.
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package gov.nasa.jpf.util.event;
20
21 /**
22 * EventTree that can check traces and coverage against expected traces
23 * for testing purposes.
24 *
25 * This has little purpose except of keeping tree spec and expected traces
26 * together in the same native class, so that we can check paths ad hoc
27 * from regression tests without having to create expected path strings
28 * in the JPF part of the test, only to translate them into native strings
29 */
30 public class TestEventTree extends EventTree {
31
32 protected String[] expected; // to be optionally initialized by subclasses
33
34 public TestEventTree (){
35 // nothing here
36 }
37
38 public TestEventTree (Event root){
39 super(root);
40 }
41
42 @Override
43 public boolean checkPath (Event lastEvent) {
44 if (expected != null){
45 return checkPath( lastEvent, expected);
46 } else {
47 System.err.println("warning: trying to check path of " + this + " without 'expected' specification");
48 return true; // nothing to check
49 }
50 }
51
52 @Override
53 public boolean isCompletelyCovered (){
54 if (expected != null){
55 return isCompletelyCovered(expected);
56 } else {
57 System.err.println("warning: trying to check coverage of " + this + " without 'expected' specification");
58 return true;
59 }
60 }
61
62 public boolean isCompletelyCovered (String[] expected) {
63 for (int i = 0; i < expected.length; i++) {
64 if (expected[i] != null) {
65 // no checkPath() call for this one
66 return false;
67 }
68 }
69
70 return true; // no un-visited expected trace left
71 }
72
73 public float getPathCoverage (String[] expected) {
74 int n = 0;
75
76 for (int i = 0; i < expected.length; i++) {
77 if (expected[i] == null) {
78 n++;
79 }
80 }
81
82 return (float) n / expected.length;
83 }
84 }