    1   package groovy.inspect;
    2
    3   import junit.framework.TestCase;
    4
    5   import java.io.Serializable;
    6   import java.util.regex.Matcher;
    7   import java.util.regex.Pattern;
    8   import java.util.*;
    9
    10  public class InspectorTest extends TestCase implements Serializable {
    11      public String someField = "only for testing";
    12      public static final String SOME_CONST = "only for testing";
    13
    14      public InspectorTest(String name) {
    15          super(name);
    16      }
    17
    18      public void testCtor() {
    19          new Inspector(new Object());
    20          try {
    21              new Inspector(null);
    22              fail("should have thown IllegalArgumentException");
    23          } catch (Exception expected) {
    24          }
    25      }
    26
    27      public void testClassProps() {
    28          Inspector insp = new Inspector(this);
    29          String[] classProps = insp.getClassProps();
    30          assertEquals("package groovy.inspect",classProps[Inspector.CLASS_PACKAGE_IDX]);
    31          assertEquals("public class InspectorTest",classProps[Inspector.CLASS_CLASS_IDX]);
    32          assertEquals("implements Serializable ",classProps[Inspector.CLASS_INTERFACE_IDX]);
    33          assertEquals("extends TestCase",classProps[Inspector.CLASS_SUPERCLASS_IDX]);
    34          assertEquals("is Primitive: false, is Array: false, is Groovy: false",classProps[Inspector.CLASS_OTHER_IDX]);
    35      }
    36      public void testMethods() {
    37          Inspector insp = new Inspector(new Object());
    38          Object[] methods = insp.getMethods();
    39          assertEquals(10, methods.length);
    40          String[] names = {"hashCode","getClass","wait","wait","wait","equals","notify","notifyAll","toString","java.lang.Object"};
    41          assertNameEquals(names, methods);
    42          String[] details = {"JAVA","public final","Object","void","wait","long, int","InterruptedException"};
    43          assertContains(methods, details);
    44          // ctors are not considered static !
    45          String[] ctorDetails = {"JAVA","public","Object","Object","java.lang.Object","",""};
    46          assertContains(methods, ctorDetails);
    47      }
    48
    49      public void testStaticMethods() {
    50          Inspector insp = new Inspector(this);
    51          Object[] methods = insp.getMethods();
    52          for (int i = 0; i < methods.length; i++) {
    53              String[] strings = (String[]) methods[i];
    54              if(strings[1].indexOf("static") > -1) return; // ok, found one static method
    55          }
    56          fail("there should have been at least one static method in this TestCase, e.g. 'fail'.");
    57      }
    58      public void testMetaMethods() {
    59          Inspector insp = new Inspector(new Object());
    60          Object[] metaMethods = insp.getMetaMethods();
    61          assertEquals(32, metaMethods.length);
    62          String[] names = { "sleep", "sleep", "println", "println", "println", "find", "print", "print", "each", "invokeMethod",
    63                             "inspect", "is", "isCase", "identity", "getAt", "putAt", "dump", "getMetaPropertyValues",  "getProperties",
    64                             "use", "use", "use", "printf", "printf", "eachWithIndex", "every", "any", "grep", "collect", "collect", "findAll", "findIndexOf"
    65                           };
    66          assertNameEquals(names, metaMethods);
    67          String[] details = {"GROOVY","public","Object","void","println","Object","n/a"};
    68          assertContains(metaMethods, details);
    69      }
    70
    71      public void testStaticMetaMethods() {
    72          Matcher matcher = Pattern.compile("").matcher("");
    73          Inspector insp = new Inspector(matcher);
    74          Object[] metaMethods = insp.getMetaMethods();
    75          assertUnique(Inspector.sort(Arrays.asList(metaMethods)));
    76          String[] details = {"GROOVY","public static","Matcher","Matcher","getLastMatcher","","n/a"};
    77          assertContains(metaMethods, details);
    78      }
    79
    80      public void testFields() {
    81          Inspector insp = new Inspector(this);
    82          Object[] fields = insp.getPublicFields();
    83          assertEquals(2, fields.length);
    84          String[] names = { "someField","SOME_CONST" };
    85          assertNameEquals(names, fields);
    86          String[] details = {"JAVA","public","InspectorTest","String","someField","\"only for testing\""};
    87          assertContains(fields, details);
    88      }
    89      public void testProperties() {
    90          Inspector insp = new Inspector(this);
    91          Object[] fields = insp.getPropertyInfo();
    92          assertEquals(4, fields.length);
    93          String[] names = { "SOME_CONST","someField","class","name"};
    94          assertNameEquals(names, fields);
    95          String[] details = {"GROOVY","public","n/a","String","name","\"testProperties\""};
    96          assertContains(fields, details);
    97      }
    98
    99      private void assertNameEquals(String[] names, Object[] metaMethods) {
    100         Set metaSet = new HashSet();
    101         for (int i = 0; i < metaMethods.length; i++) {
    102             String[] strings = (String[]) metaMethods[i];
    103             metaSet.add(strings[Inspector.MEMBER_NAME_IDX]);
    104         }
    105         Set nameSet = new HashSet(Arrays.asList(names));
    106         assertEquals(nameSet, metaSet);
    107     }
    108
    109     private void assertContains(Object[] candidates, String[] sample) {
    110         String sampleBuffer = concat(sample);
    111         for (int i = 0; i < candidates.length; i++) {
    112             String[] entry = (String[]) candidates[i];
    113             if (sampleBuffer.equals(concat(entry))) return;
    114         }
    115         fail("should have found sample: " + sampleBuffer);
    116     }
    117
    118     private void assertUnique(Collection sortedMembers){
    119         if (sortedMembers.size() < 2) return;
    120         Comparator comp = new Inspector.MemberComparator();
    121         Iterator iter = sortedMembers.iterator();
    122         Object last = iter.next();
    123         while (iter.hasNext()) {
    124             Object element = iter.next();
    125             if (0 == comp.compare(last, element)){
    126                 fail("found duplication for element "+element);
    127             }
    128             last = element;
    129         }
    130     }
    131
    132     private String concat(String[] details) {
    133         StringBuffer detailBuffer = new StringBuffer();
    134         for (int i = 0; i < details.length; i++) {
    135             detailBuffer.append(details[i]);
    136             detailBuffer.append(" ");
    137         }
    138         return detailBuffer.toString();
    139     }
    140
    141 }