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rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/ReflectionTest.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Sat, 28 Sep 2013 01:32:59 +0200
branchjavac
changeset 1312 bf0b56f2dca2
parent 1034 28dc692f3b11
child 1321 7a78a84ab583
permissions -rw-r--r--
Adding more reflection methods, but mostly throwing exceptions 
     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 isRunnableDeclaresRunMethod() throws NoSuchMethodException {

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

    78     }

    79     

    80     @Compare public String namesOfMethods() {

    81         StringBuilder sb = new StringBuilder();

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

    83         int i = 0;

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

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

    86         }

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

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

    89         }

    90         return sb.toString();

    91     }

    92 

    93     @Compare public String namesOfDeclaringClassesOfMethods() {

    94         StringBuilder sb = new StringBuilder();

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

    96         int i = 0;

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

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

    99         }

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

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

   102         }

   103         return sb.toString();

   104     }

   105     

   106     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

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

   108         return "should not happen";

   109     }

   110     

   111     @Compare public String classCastException() {

   112         try {

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

   114             return "" + i.intValue();

   115         } catch (ClassCastException ex) {

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

   117         }

   118     }

   119 

   120     @Compare public String methodThatThrowsException() throws Exception {

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

   122         return "should not happen";

   123     }

   124 

   125     @Compare public Object voidReturnType() throws Exception {

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

   127     }

   128     

   129     @Retention(RetentionPolicy.RUNTIME)

   130     @interface Ann {

   131     }

   132     

   133     @Compare public String annoClass() throws Exception {

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

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

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

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

   138     }

   139     

   140     @Compare public boolean isAnnotation() {

   141         return Ann.class.isAnnotation();

   142     }

   143     @Compare public boolean isNotAnnotation() {

   144         return String.class.isAnnotation();

   145     }

   146     @Compare public boolean isNotAnnotationEnum() {

   147         return E.class.isAnnotation();

   148     }

   149     enum E { A, B };

   150     @Compare public boolean isEnum() {

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

   152     }

   153 

   154     @Compare public boolean isNotEnum() {

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

   156     }

   157     

   158     @Compare public String newInstanceFails() throws InstantiationException {

   159         try {

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

   161         } catch (IllegalAccessException ex) {

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

   163         }

   164     }

   165     

   166     @Compare public String paramTypes() throws Exception {

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

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

   169         return pt[0].getName();

   170     }

   171     @Compare public String paramTypesNotFound() throws Exception {

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

   173     }

   174     @Compare public int methodWithArgs() throws Exception {

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

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

   177     }

   178     

   179     @Compare public String classGetNameForByte() {

   180          return byte.class.getName();

   181     }

   182     @Compare public String classGetNameForBaseObject() {

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

   184     }

   185     @Compare public String classGetNameForJavaObject() {

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

   187     }

   188     @Compare public String classGetNameForObjectArray() {

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

   190     }

   191     @Compare public String classGetNameForSimpleIntArray() {

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

   193     }

   194     @Compare public boolean sameClassGetNameForSimpleCharArray() {

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

   196     }

   197     @Compare public String classGetNameForMultiIntArray() {

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

   199     }

   200     @Compare public String classGetNameForMultiIntArrayInner() {

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

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

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

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

   205     }

   206     @Compare public String classGetNameForMultiStringArray() {

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

   208     }

   209     

   210     @Compare public String classForByte() throws Exception {

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

   212     }

   213 

   214     @Compare public String classForUnknownArray() {

   215         try {

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

   217         } catch (Exception ex) {

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

   219         }

   220     }

   221     

   222     @Compare public String classForUnknownDeepArray() {

   223         try {

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

   225         } catch (Exception ex) {

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

   227         }

   228     }

   229     

   230     @Compare public String componentGetNameForObjectArray() {

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

   232     }

   233     @Compare public boolean sameComponentGetNameForObjectArray() {

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

   235     }

   236     @Compare public String componentGetNameForSimpleIntArray() {

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

   238     }

   239     @Compare public String componentGetNameForMultiIntArray() {

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

   241     }

   242     @Compare public String componentGetNameForMultiStringArray() {

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

   244         StringBuilder sb = new StringBuilder();

   245         for (;;) {

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

   247             c = c.getComponentType();

   248             if (c == null) {

   249                 break;

   250             }

   251         }

   252         return sb.toString();

   253     }

   254     

   255     @Compare public boolean isArray() {

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

   257     }

   258     

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

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

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

   262         Collections.sort(list);

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

   264     }

   265     

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

   267     private static Object newObject() {

   268         return new Object();

   269     }

   270     

   271     @Factory

   272     public static Object[] create() {

   273         return VMTest.create(ReflectionTest.class);

   274     }

   275     

   276 }
hg/bck2brwsr