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   1 /* *******************************************************************
   2  * Copyright (c) 2004 IBM
   3  * All rights reserved.
   4  * This program and the accompanying materials are made available
   5  * under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Andy Clement -     initial implementation
  11  * ******************************************************************/
  12
  13 package org.aspectj.apache.bcel.classfile.tests;
  14
  15 import java.io.File;
  16 import java.io.IOException;
  17 import java.util.Iterator;
  18
  19 import org.aspectj.apache.bcel.classfile.Attribute;
  20 import org.aspectj.apache.bcel.classfile.JavaClass;
  21 import org.aspectj.apache.bcel.classfile.Method;
  22 import org.aspectj.apache.bcel.classfile.annotation.Annotation;
  23 import org.aspectj.apache.bcel.classfile.annotation.ElementNameValuePair;
  24 import org.aspectj.apache.bcel.classfile.annotation.RuntimeVisibleParameterAnnotations;
  25 import org.aspectj.apache.bcel.util.SyntheticRepository;
  26
  27
  28 public class RuntimeVisibleParameterAnnotationAttributeTest extends BcelTestCase {
  29
  30
  31         protected void setUp() throws Exception {
  32                 super.setUp();
  33         }
  34
  35
  36         public void testAccessingRuntimeVisibleParameterAnnotations() throws ClassNotFoundException {
  37                 JavaClass clazz = getClassFromJar("AnnotatedParameters");
  38                 Attribute[] rvaAttr = findAttribute("RuntimeVisibleParameterAnnotations",clazz);
  39                 Method[] methods = clazz.getMethods();
  40
  41                 for (int i = 0; i < methods.length; i++) {
  42                         Method m = methods[i];
  43                         if (m.getName().equals("foo")) {
  44                                 RuntimeVisibleParameterAnnotations paramAnns =
  45                                         (RuntimeVisibleParameterAnnotations) findAttribute("RuntimeVisibleParameterAnnotations",m.getAttributes());
  46                                 assertTrue("foo takes two parameters, not "+paramAnns.getParameterAnnotations().size(),
  47                                                 paramAnns.getParameterAnnotations().size()==2);
  48
  49                                 Annotation[] firstParamAnnotations = paramAnns.getAnnotationsOnParameter(0);
  50                                 checkAnnotation(firstParamAnnotations[0],"SimpleAnnotation","id","2");
  51
  52                                 Annotation[] secondParamAnnotations = paramAnns.getAnnotationsOnParameter(1);
  53                                 checkAnnotation(secondParamAnnotations[0],"SimpleAnnotation","id","3");
  54                                 checkAnnotation(secondParamAnnotations[1],"AnnotationEnumElement","enumval","Red");
  55
  56                         }
  57                         if (m.getName().equals("main")) {
  58                                 RuntimeVisibleParameterAnnotations paramAnns =
  59                                         (RuntimeVisibleParameterAnnotations) findAttribute("RuntimeVisibleParameterAnnotations",m.getAttributes());
  60                                 assertTrue("main takes one parameter, not "+paramAnns.getParameterAnnotations().size(),
  61                                                 paramAnns.getParameterAnnotations().size()==1);
  62
  63                                 Annotation[] firstParamAnnotations = paramAnns.getAnnotationsOnParameter(0);
  64                                 checkAnnotation(firstParamAnnotations[0],"SimpleAnnotation","id","1");
  65                         }
  66                 }
  67         }
  68
  69         public void testAccessingParameterAnnotationsThroughGetAnnotations() throws ClassNotFoundException {
  70                 JavaClass clazz = getClassFromJar("AnnotatedParameters");
  71                 Attribute[] rvaAttr = findAttribute("RuntimeVisibleParameterAnnotations",clazz);
  72
  73                 checkFooMethod(clazz);
  74         }
  75
  76         public void testParameterAnnotationsReadWrite() throws ClassNotFoundException,IOException {
  77                 JavaClass clazz = getClassFromJar("AnnotatedParameters");
  78
  79                 checkFooMethod(clazz);
  80
  81                 //       Write it out
  82                 File tfile = createTestdataFile("AnnotatedParameters.class");
  83                 clazz.dump(tfile);
  84
  85                 SyntheticRepository repos2 = createRepos(".");
  86                 JavaClass           clazz2 = repos2.loadClass("AnnotatedParameters");
  87
  88                 checkFooMethod(clazz);
  89
  90                 assertTrue(tfile.delete());
  91         }
  92
  93
  94         public void checkFooMethod(JavaClass clazz) {
  95                 Method[] methods = clazz.getMethods();
  96
  97                 for (int i = 0; i < methods.length; i++) {
  98                         Method m = methods[i];
  99                         if (m.getName().equals("foo")) {
 100
 101                                 Annotation[] firstParamAnnotations = m.getAnnotationsOnParameter(0);
 102                                 checkAnnotation(firstParamAnnotations[0],"SimpleAnnotation","id","2");
 103
 104                                 Annotation[] secondParamAnnotations = m.getAnnotationsOnParameter(1);
 105                                 checkAnnotation(secondParamAnnotations[0],"SimpleAnnotation","id","3");
 106                                 checkAnnotation(secondParamAnnotations[1],"AnnotationEnumElement","enumval","Red");
 107
 108                         }
 109                 }
 110         }
 111
 112         private void checkAnnotation(Annotation a,String name,String elementname,String elementvalue) {
 113                 assertTrue("Expected annotation to have name "+name+" but it had name "+a.getTypeName(),
 114                                 a.getTypeName().equals(name));
 115                 assertTrue("Expected annotation to have one element but it had "+a.getValues().size(),a.getValues().size()==1);
 116                 ElementNameValuePair envp = (ElementNameValuePair)a.getValues().get(0);
 117                 assertTrue("Expected element name "+elementname+" but was "+envp.getNameString(),
 118                                 elementname.equals(envp.getNameString()));
 119                 assertTrue("Expected element value "+elementvalue+" but was "+envp.getValue().stringifyValue(),
 120                                 elementvalue.equals(envp.getValue().stringifyValue()));
 121         }
 122
 123
 124         // helper methods
 125
 126         public void checkValue(Annotation a,String name,String tostring) {
 127                 for (Iterator i = a.getValues().iterator(); i.hasNext();) {
 128                         ElementNameValuePair element = (ElementNameValuePair) i.next();
 129                         if (element.getNameString().equals(name)) {
 130                                 if (!element.getValue().stringifyValue().equals(tostring)) {
 131                                         fail("Expected element "+name+" to have value "+tostring+" but it had value "+element.getValue().stringifyValue());
 132                                 }
 133                                 return;
 134                         }
 135                 }
 136                 fail("Didnt find named element "+name);
 137         }
 138
 139         protected void tearDown() throws Exception {
 140                 super.tearDown();
 141         }
 142
 143 }