1   /***
2    * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
3    */
4   package test.net.sourceforge.pmd.rules.design;
5   
6   import net.sourceforge.pmd.PMD;
7   import net.sourceforge.pmd.Rule;
8   import net.sourceforge.pmd.rules.design.SwitchDensityRule;
9   import test.net.sourceforge.pmd.testframework.SimpleAggregatorTst;
10  import test.net.sourceforge.pmd.testframework.TestDescriptor;
11  
12  public class SwitchDensityTest extends SimpleAggregatorTst {
13  
14      private Rule rule;
15  
16      public void setUp() {
17          rule = new SwitchDensityRule();
18          rule.addProperty("minimum", "4");
19      }
20  
21      public void testAll() {
22          runTests(new TestDescriptor[]{
23              new TestDescriptor(TEST1, "Five stmts in one switch case, should be flagged", 1, rule),
24              new TestDescriptor(TEST2, "One stmt in one switch case, ok", 0, rule),
25              new TestDescriptor(TEST3, "Five stmts, 5 cases, OK", 0, rule),
26          });
27      }
28  
29      private static final String TEST1 =
30              "// Switch Density = 5.0" + PMD.EOL +
31              "public class SwitchDensity1 {" + PMD.EOL +
32              " public void foo(int i) {" + PMD.EOL +
33              "  switch (i) {" + PMD.EOL +
34              "  case 0:" + PMD.EOL +
35              "  {" + PMD.EOL + pad(5) +
36              "  }" + PMD.EOL +
37              "  }" + PMD.EOL +
38              " }" + PMD.EOL +
39              "}";
40  
41      private static final String TEST2 =
42              "// Switch Density = 1.0" + PMD.EOL +
43              "public class SwitchDensity2 {" + PMD.EOL +
44              "       public void foo(int i) {" + PMD.EOL +
45              "               switch (i) {" + PMD.EOL +
46              "                       case 0:" + PMD.EOL +
47              "                       {" + PMD.EOL + pad(1) +
48              "                       }" + PMD.EOL +
49              "               }" + PMD.EOL +
50              "       }" + PMD.EOL +
51              "}";
52  
53      private static final String TEST3 =
54              "// Switch Density = 1.0" + PMD.EOL +
55              "public class SwitchDensity3 {" + PMD.EOL +
56              "       public void foo(int i) {" + PMD.EOL +
57              "               switch (i) {" + PMD.EOL +
58              "                       case 0:" + PMD.EOL +
59              "                       case 1:" + PMD.EOL +
60              "                       case 2:" + PMD.EOL +
61              "                       case 3:" + PMD.EOL +
62              "                       case 4:" + PMD.EOL +
63              "                       {" + PMD.EOL + pad(5) +
64              "                       }" + PMD.EOL +
65              "               } " + PMD.EOL +
66              "       }" + PMD.EOL +
67              "}";
68  
69      private static String pad(int times) {
70          String x = "";
71          for (int i = 0; i < times; i++) {
72              x += "System.err.println(\"I am a fish.\");" + PMD.EOL;
73          }
74          return x;
75      }
76  
77  }