1   /***
2    * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
3   */
4   package test.net.sourceforge.pmd.rules;
5   
6   import net.sourceforge.pmd.PMD;
7   import net.sourceforge.pmd.Report;
8   import net.sourceforge.pmd.Rule;
9   import net.sourceforge.pmd.RuleSetNotFoundException;
10  import net.sourceforge.pmd.RuleViolation;
11  import test.net.sourceforge.pmd.testframework.RuleTst;
12  
13  import java.util.Iterator;
14  
15  public class CyclomaticComplexityTest extends RuleTst {
16  
17      private Rule rule;
18  
19      public void setUp() throws RuleSetNotFoundException {
20          rule = findRule("codesize", "CyclomaticComplexity");
21          rule.setMessage("The {0} ''{1}'' has a Cyclomatic Complexity of {2}.");
22      }
23  
24      public void testOneMethod() throws Throwable {
25          rule.addProperty("reportLevel", "1");
26          Report report = new Report();
27          runTestFromString(TEST1, rule, report);
28          Iterator i = report.iterator();
29          RuleViolation rv = (RuleViolation) i.next();
30          assertTrue(rv.getDescription().indexOf("Highest = 1") != -1);
31      }
32  
33      public void testNastyComplicatedMethod() throws Throwable {
34          rule.addProperty("reportLevel", "10");
35          Report report = new Report();
36          runTestFromString(TEST2, rule, report);
37          Iterator i = report.iterator();
38          RuleViolation rv = (RuleViolation) i.next();
39          assertTrue(rv.getDescription().indexOf("Highest = 12") != -1);
40      }
41  
42      public void testConstructor() throws Throwable {
43          rule.addProperty("reportLevel", "1");
44          Report report = new Report();
45          runTestFromString(TEST3, rule, report);
46          Iterator i = report.iterator();
47          RuleViolation rv = (RuleViolation) i.next();
48          assertTrue(rv.getDescription().indexOf("Highest = 1") != -1);
49      }
50  
51      public void testLessComplicatedThanReportLevel() throws Throwable {
52          rule.addProperty("reportLevel", "10");
53          Report report = new Report();
54          runTestFromString(TEST1, rule, report);
55          assertEquals(0, report.size());
56      }
57  
58      private static final String TEST1 =
59      "public class Foo {" + PMD.EOL +
60      " public void foo() {}" + PMD.EOL +
61      "}";
62  
63      private static final String TEST2 =
64      "public class Foo {" + PMD.EOL +
65      " public void example() {" + PMD.EOL +
66      "  int x = 0;" + PMD.EOL +
67      "  int a = 0;" + PMD.EOL +
68      "  int b = 0;" + PMD.EOL +
69      "  int c = 0;" + PMD.EOL +
70      "  int d = 0;" + PMD.EOL +
71      "  int a1 = 0;" + PMD.EOL +
72      "  int a2 = 0;" + PMD.EOL +
73      "  int b1 = 0;" + PMD.EOL +
74      "  int b2 = 0;" + PMD.EOL +
75      "  int z = 0;" + PMD.EOL +
76      "  int h = 0;" + PMD.EOL +
77      "  int e = 0;" + PMD.EOL +
78      "  int f = 0;" + PMD.EOL +
79      "" + PMD.EOL +
80      "  if (a == b) {" + PMD.EOL +
81      "   if (a1 == b1) {" + PMD.EOL +
82      "     x=2;" + PMD.EOL +
83      "   } else if (a2 == b2) {" + PMD.EOL +
84      "     x=2;" + PMD.EOL +
85      "   }" + PMD.EOL +
86      "            else" + PMD.EOL +
87      "            {" + PMD.EOL +
88      "                x=2;" + PMD.EOL +
89      "            }" + PMD.EOL +
90      "        }" + PMD.EOL +
91      "       else if (c == d)" + PMD.EOL +
92      "        {" + PMD.EOL +
93      "           while (c == d)" + PMD.EOL +
94      "            {" + PMD.EOL +
95      "                x=2;" + PMD.EOL +
96      "            }" + PMD.EOL +
97      "        }" + PMD.EOL +
98      "       else if (e == f)" + PMD.EOL +
99      "        {" + PMD.EOL +
100     "           for (int n = 0; n < h; n++)" + PMD.EOL +
101     "            {" + PMD.EOL +
102     "                x=2;" + PMD.EOL +
103     "            }" + PMD.EOL +
104     "        }" + PMD.EOL +
105     "        else" + PMD.EOL +
106     "        {" + PMD.EOL +
107     "            switch (z)" + PMD.EOL +
108     "            {" + PMD.EOL +
109     "               case 1:" + PMD.EOL +
110     "                x=2;" + PMD.EOL +
111     "                    break;" + PMD.EOL +
112     "" + PMD.EOL +
113     "              case 2:" + PMD.EOL +
114     "                x=2;" + PMD.EOL +
115     "                    break;" + PMD.EOL +
116     "" + PMD.EOL +
117     "              case 3:" + PMD.EOL +
118     "                x=2;" + PMD.EOL +
119     "                    break;" + PMD.EOL +
120     "" + PMD.EOL +
121     "              default:" + PMD.EOL +
122     "                x=2;" + PMD.EOL +
123     "                    break;" + PMD.EOL +
124     "            }" + PMD.EOL +
125     "        }" + PMD.EOL +
126     "    }" + PMD.EOL +
127     "}";
128 
129     private static final String TEST3 =
130     "public class Foo {" + PMD.EOL +
131     " public Foo() {}" + PMD.EOL +
132     "}";
133 
134 }