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rt/vmtest/src/test/java/org/apidesign/bck2brwsr/tck/ReflectionTest.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Mon, 25 Mar 2013 16:16:30 +0100
branchmodel
changeset 886 88540bb74300
parent 775 a13e33fd5c2e
child 938 0eec1b51c13c
permissions -rw-r--r--
Class.isAssignableFrom and primitive types works better now 
     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 2 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. Look for COPYING file in the top folder.

    16  * If not, see http://opensource.org/licenses/GPL-2.0.

    17  */

    18 package org.apidesign.bck2brwsr.tck;

    19 

    20 import java.lang.annotation.Retention;

    21 import java.lang.annotation.RetentionPolicy;

    22 import java.lang.reflect.Method;

    23 import java.util.Arrays;

    24 import java.util.Collections;

    25 import java.util.List;

    26 import org.apidesign.bck2brwsr.core.JavaScriptBody;

    27 import org.apidesign.bck2brwsr.vmtest.Compare;

    28 import org.apidesign.bck2brwsr.vmtest.VMTest;

    29 import org.testng.annotations.Factory;

    30 

    31 /**

    32  *

    33  * @author Jaroslav Tulach <jtulach@netbeans.org>

    34  */

    35 public class ReflectionTest {

    36     @Compare public boolean nonNullThis() {

    37         return this == null;

    38     }

    39     

    40     @Compare public String intType() {

    41         return Integer.TYPE.toString();

    42     }

    43 

    44     @Compare public String voidType() throws Exception {

    45         return void.class.toString();

    46     }

    47 

    48     @Compare public String longClass() {

    49         return long.class.toString();

    50     }

    51     

    52     @Compare public boolean isRunnableInterface() {

    53         return Runnable.class.isInterface();

    54     }

    55 

    56     @Compare public boolean isAssignableToPrimitiveType() {

    57         return boolean.class.isAssignableFrom(Runnable.class);

    58     }

    59 

    60     @Compare public boolean isAssignableFromPrimitiveType() {

    61         return Runnable.class.isAssignableFrom(boolean.class);

    62     }

    63 

    64     @Compare public boolean isAssignableLongFromInt() {

    65         return long.class.isAssignableFrom(int.class);

    66     }

    67 

    68     @Compare public boolean isAssignableIntFromLong() {

    69         return int.class.isAssignableFrom(long.class);

    70     }

    71 

    72     @Compare public String isRunnableHasRunMethod() throws NoSuchMethodException {

    73         return Runnable.class.getMethod("run").getName();

    74     }

    75     

    76     @Compare public String namesOfMethods() {

    77         StringBuilder sb = new StringBuilder();

    78         String[] arr = new String[20];

    79         int i = 0;

    80         for (Method m : StaticUse.class.getMethods()) {

    81             arr[i++] = m.getName();

    82         }

    83         for (String s : sort(arr, i)) {

    84             sb.append(s).append("\n");

    85         }

    86         return sb.toString();

    87     }

    88 

    89     @Compare public String namesOfDeclaringClassesOfMethods() {

    90         StringBuilder sb = new StringBuilder();

    91         String[] arr = new String[20];

    92         int i = 0;

    93         for (Method m : StaticUse.class.getMethods()) {

    94             arr[i++] = m.getName() + "@" + m.getDeclaringClass().getName();

    95         }

    96         for (String s : sort(arr, i)) {

    97             sb.append(s).append("\n");

    98         }

    99         return sb.toString();

   100     }

   101     

   102     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

   103         StaticUse.class.getMethod("instanceMethod").invoke(null);

   104         return "should not happen";

   105     }

   106 

   107     @Compare public Object voidReturnType() throws Exception {

   108         return StaticUse.class.getMethod("instanceMethod").getReturnType();

   109     }

   110     

   111     @Retention(RetentionPolicy.RUNTIME)

   112     @interface Ann {

   113     }

   114     

   115     @Compare public String annoClass() throws Exception {

   116         Retention r = Ann.class.getAnnotation(Retention.class);

   117         assert r != null : "Annotation is present";

   118         assert r.value() == RetentionPolicy.RUNTIME : "Policy value is OK: " + r.value();

   119         return r.annotationType().getName();

   120     }

   121     

   122     @Compare public boolean isAnnotation() {

   123         return Ann.class.isAnnotation();

   124     }

   125     @Compare public boolean isNotAnnotation() {

   126         return String.class.isAnnotation();

   127     }

   128     @Compare public boolean isNotAnnotationEnum() {

   129         return E.class.isAnnotation();

   130     }

   131     enum E { A, B };

   132     @Compare public boolean isEnum() {

   133         return E.A.getClass().isEnum();

   134     }

   135 

   136     @Compare public boolean isNotEnum() {

   137         return "".getClass().isEnum();

   138     }

   139     

   140     @Compare public String newInstanceFails() throws InstantiationException {

   141         try {

   142             return "success: " + StaticUseSub.class.newInstance();

   143         } catch (IllegalAccessException ex) {

   144             return ex.getClass().getName();

   145         }

   146     }

   147     

   148     @Compare public String paramTypes() throws Exception {

   149         Method plus = StaticUse.class.getMethod("plus", int.class, Integer.TYPE);

   150         final Class[] pt = plus.getParameterTypes();

   151         return pt[0].getName();

   152     }

   153     @Compare public String paramTypesNotFound() throws Exception {

   154         return StaticUse.class.getMethod("plus", int.class, double.class).toString();

   155     }

   156     @Compare public int methodWithArgs() throws Exception {

   157         Method plus = StaticUse.class.getMethod("plus", int.class, Integer.TYPE);

   158         return (Integer)plus.invoke(null, 2, 3);

   159     }

   160     

   161     @Compare public String classGetNameForByte() {

   162          return byte.class.getName();

   163     }

   164     @Compare public String classGetNameForBaseObject() {

   165         return newObject().getClass().getName();

   166     }

   167     @Compare public String classGetNameForJavaObject() {

   168         return new Object().getClass().getName();

   169     }

   170     @Compare public String classGetNameForObjectArray() {

   171         return (new Object[3]).getClass().getName();

   172     }

   173     @Compare public String classGetNameForSimpleIntArray() {

   174         return (new int[3]).getClass().getName();

   175     }

   176     @Compare public boolean sameClassGetNameForSimpleCharArray() {

   177         return (new char[3]).getClass() == (new char[34]).getClass();

   178     }

   179     @Compare public String classGetNameForMultiIntArray() {

   180         return (new int[3][4][5][6][7][8][9]).getClass().getName();

   181     }

   182     @Compare public String classGetNameForMultiIntArrayInner() {

   183         final int[][][][][][][] arr = new int[3][4][5][6][7][8][9];

   184         int[][][][][][] subarr = arr[0];

   185         int[][][][][] subsubarr = subarr[0];

   186         return subsubarr.getClass().getName();

   187     }

   188     @Compare public String classGetNameForMultiStringArray() {

   189         return (new String[3][4][5][6][7][8][9]).getClass().getName();

   190     }

   191     

   192     @Compare public String classForByte() throws Exception {

   193         return Class.forName("[Z").getName();

   194     }

   195 

   196     @Compare public String classForUnknownArray() {

   197         try {

   198             return Class.forName("[W").getName();

   199         } catch (Exception ex) {

   200             return ex.getClass().getName();

   201         }

   202     }

   203     

   204     @Compare public String classForUnknownDeepArray() {

   205         try {

   206             return Class.forName("[[[[[W").getName();

   207         } catch (Exception ex) {

   208             return ex.getClass().getName();

   209         }

   210     }

   211     

   212     @Compare public String componentGetNameForObjectArray() {

   213         return (new Object[3]).getClass().getComponentType().getName();

   214     }

   215     @Compare public boolean sameComponentGetNameForObjectArray() {

   216         return (new Object[3]).getClass().getComponentType() == Object.class;

   217     }

   218     @Compare public String componentGetNameForSimpleIntArray() {

   219         return (new int[3]).getClass().getComponentType().getName();

   220     }

   221     @Compare public String componentGetNameForMultiIntArray() {

   222         return (new int[3][4][5][6][7][8][9]).getClass().getComponentType().getName();

   223     }

   224     @Compare public String componentGetNameForMultiStringArray() {

   225         Class<?> c = (new String[3][4][5][6][7][8][9]).getClass();

   226         StringBuilder sb = new StringBuilder();

   227         for (;;) {

   228             sb.append(c.getName()).append("\n");

   229             c = c.getComponentType();

   230             if (c == null) {

   231                 break;

   232             }

   233         }

   234         return sb.toString();

   235     }

   236     

   237     @Compare public boolean isArray() {

   238         return new Object[0].getClass().isArray();

   239     }

   240     

   241     @JavaScriptBody(args = { "arr", "len" }, body="var a = arr.slice(0, len); a.sort(); return a;")

   242     private static String[] sort(String[] arr, int len) {

   243         List<String> list = Arrays.asList(arr).subList(0, len);

   244         Collections.sort(list);

   245         return list.toArray(new String[0]);

   246     }

   247     

   248     @JavaScriptBody(args = {}, body = "return new Object();")

   249     private static Object newObject() {

   250         return new Object();

   251     }

   252     

   253     @Factory

   254     public static Object[] create() {

   255         return VMTest.create(ReflectionTest.class);

   256     }

   257     

   258 }
hg/bck2brwsr