    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  }