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rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/ReflectionTest.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Mon, 21 Oct 2013 09:45:09 +0200
changeset 1376 8e600271bba1
parent 1321 7a78a84ab583
child 1470 6ab756741111
permissions -rw-r--r--
Making reflection with array parameters working 
     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.Constructor;

    23 import java.lang.reflect.Method;

    24 import java.lang.reflect.Proxy;

    25 import java.util.Arrays;

    26 import java.util.Collections;

    27 import java.util.List;

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

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

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

    31 import org.testng.annotations.Factory;

    32 

    33 /**

    34  *

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

    36  */

    37 public class ReflectionTest {

    38     @Compare public boolean nonNullThis() {

    39         return this == null;

    40     }

    41     

    42     @Compare public String intType() {

    43         return Integer.TYPE.toString();

    44     }

    45 

    46     @Compare public String voidType() throws Exception {

    47         return void.class.toString();

    48     }

    49 

    50     @Compare public String longClass() {

    51         return long.class.toString();

    52     }

    53     

    54     @Compare public boolean isRunnableInterface() {

    55         return Runnable.class.isInterface();

    56     }

    57 

    58     @Compare public boolean isAssignableToPrimitiveType() {

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

    60     }

    61 

    62     @Compare public boolean isAssignableFromPrimitiveType() {

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

    64     }

    65 

    66     @Compare public boolean isAssignableLongFromInt() {

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

    68     }

    69 

    70     @Compare public boolean isAssignableIntFromLong() {

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

    72     }

    73 

    74     @Compare public String isRunnableHasRunMethod() throws NoSuchMethodException {

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

    76     }

    77 

    78     @Compare public String isRunnableDeclaresRunMethod() throws NoSuchMethodException {

    79         return Runnable.class.getDeclaredMethod("run").getName();

    80     }

    81     

    82     @Compare public String intValue() throws Exception {

    83         return Integer.class.getConstructor(int.class).newInstance(10).toString();

    84     }

    85     

    86     @Compare public String getMethodWithArray() throws Exception {

    87         return Proxy.class.getMethod("getProxyClass", ClassLoader.class, Class[].class).getName();

    88     }

    89     

    90     @Compare public String namesOfMethods() {

    91         StringBuilder sb = new StringBuilder();

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

    93         int i = 0;

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

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

    96         }

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

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

    99         }

   100         return sb.toString();

   101     }

   102 

   103     @Compare public String paramsOfConstructors() {

   104         StringBuilder sb = new StringBuilder();

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

   106         int i = 0;

   107         for (Constructor<?> m : StaticUse.class.getConstructors()) {

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

   109         }

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

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

   112         }

   113         return sb.toString();

   114     }

   115 

   116     @Compare public String namesOfDeclaringClassesOfMethods() {

   117         StringBuilder sb = new StringBuilder();

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

   119         int i = 0;

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

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

   122         }

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

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

   125         }

   126         return sb.toString();

   127     }

   128     

   129     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

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

   131         return "should not happen";

   132     }

   133     

   134     @Compare public String classCastException() {

   135         try {

   136             Integer i = (Integer)StaticUseSub.getNonNull();

   137             return "" + i.intValue();

   138         } catch (ClassCastException ex) {

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

   140         }

   141     }

   142 

   143     @Compare public String methodThatThrowsException() throws Exception {

   144         StaticUse.class.getMethod("instanceMethod").invoke(new StaticUse());

   145         return "should not happen";

   146     }

   147 

   148     @Compare public Object voidReturnType() throws Exception {

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

   150     }

   151     

   152     @Retention(RetentionPolicy.RUNTIME)

   153     @interface Ann {

   154     }

   155     

   156     @Compare public String annoClass() throws Exception {

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

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

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

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

   161     }

   162     

   163     @Compare public boolean isAnnotation() {

   164         return Ann.class.isAnnotation();

   165     }

   166     @Compare public boolean isNotAnnotation() {

   167         return String.class.isAnnotation();

   168     }

   169     @Compare public boolean isNotAnnotationEnum() {

   170         return E.class.isAnnotation();

   171     }

   172     enum E { A, B };

   173     @Compare public boolean isEnum() {

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

   175     }

   176 

   177     @Compare public boolean isNotEnum() {

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

   179     }

   180     

   181     @Compare public String newInstanceFails() throws InstantiationException {

   182         try {

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

   184         } catch (IllegalAccessException ex) {

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

   186         }

   187     }

   188     

   189     @Compare public String paramTypes() throws Exception {

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

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

   192         return pt[0].getName();

   193     }

   194     @Compare public String paramTypesNotFound() throws Exception {

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

   196     }

   197     @Compare public int methodWithArgs() throws Exception {

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

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

   200     }

   201     

   202     @Compare public String classGetNameForByte() {

   203          return byte.class.getName();

   204     }

   205     @Compare public String classGetNameForBaseObject() {

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

   207     }

   208     @Compare public String classGetNameForJavaObject() {

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

   210     }

   211     @Compare public String classGetNameForObjectArray() {

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

   213     }

   214     @Compare public String classGetNameForSimpleIntArray() {

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

   216     }

   217     @Compare public boolean sameClassGetNameForSimpleCharArray() {

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

   219     }

   220     @Compare public String classGetNameForMultiIntArray() {

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

   222     }

   223     @Compare public String classGetNameForMultiIntArrayInner() {

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

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

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

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

   228     }

   229     @Compare public String classGetNameForMultiStringArray() {

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

   231     }

   232     

   233     @Compare public String classForByte() throws Exception {

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

   235     }

   236 

   237     @Compare public String classForUnknownArray() {

   238         try {

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

   240         } catch (Exception ex) {

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

   242         }

   243     }

   244     

   245     @Compare public String classForUnknownDeepArray() {

   246         try {

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

   248         } catch (Exception ex) {

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

   250         }

   251     }

   252     

   253     @Compare public String componentGetNameForObjectArray() {

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

   255     }

   256     @Compare public boolean sameComponentGetNameForObjectArray() {

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

   258     }

   259     @Compare public String componentGetNameForSimpleIntArray() {

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

   261     }

   262     @Compare public String componentGetNameForMultiIntArray() {

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

   264     }

   265     @Compare public String componentGetNameForMultiStringArray() {

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

   267         StringBuilder sb = new StringBuilder();

   268         for (;;) {

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

   270             c = c.getComponentType();

   271             if (c == null) {

   272                 break;

   273             }

   274         }

   275         return sb.toString();

   276     }

   277     

   278     @Compare public boolean isArray() {

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

   280     }

   281     

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

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

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

   285         Collections.sort(list);

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

   287     }

   288     

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

   290     private static Object newObject() {

   291         return new Object();

   292     }

   293     

   294     @Factory

   295     public static Object[] create() {

   296         return VMTest.create(ReflectionTest.class);

   297     }

   298     

   299 }
hg/bck2brwsr