hg/bck2brwsr: rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/ReflectionTest.java@7a78a84ab583

     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;

    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.util.Arrays;

    25 import java.util.Collections;

    26 import java.util.List;

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

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

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

    30 import org.testng.annotations.Factory;

    32 /**

    33  *

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

    35  */

    36 public class ReflectionTest {

    37     @Compare public boolean nonNullThis() {

    38         return this == null;

    39     }

    41     @Compare public String intType() {

    42         return Integer.TYPE.toString();

    43     }

    45     @Compare public String voidType() throws Exception {

    46         return void.class.toString();

    47     }

    49     @Compare public String longClass() {

    50         return long.class.toString();

    51     }

    53     @Compare public boolean isRunnableInterface() {

    54         return Runnable.class.isInterface();

    55     }

    57     @Compare public boolean isAssignableToPrimitiveType() {

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

    59     }

    61     @Compare public boolean isAssignableFromPrimitiveType() {

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

    63     }

    65     @Compare public boolean isAssignableLongFromInt() {

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

    67     }

    69     @Compare public boolean isAssignableIntFromLong() {

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

    71     }

    73     @Compare public String isRunnableHasRunMethod() throws NoSuchMethodException {

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

    75     }

    77     @Compare public String isRunnableDeclaresRunMethod() throws NoSuchMethodException {

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

    79     }

    81     @Compare public String intValue() throws Exception {

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

    83     }

    85     @Compare public String namesOfMethods() {

    86         StringBuilder sb = new StringBuilder();

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

    88         int i = 0;

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

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

    91         }

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

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

    94         }

    95         return sb.toString();

    96     }

    98     @Compare public String paramsOfConstructors() {

    99         StringBuilder sb = new StringBuilder();

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

   101         int i = 0;

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

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

   104         }

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

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

   107         }

   108         return sb.toString();

   109     }

   111     @Compare public String namesOfDeclaringClassesOfMethods() {

   112         StringBuilder sb = new StringBuilder();

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

   114         int i = 0;

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

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

   117         }

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

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

   120         }

   121         return sb.toString();

   122     }

   124     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

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

   126         return "should not happen";

   127     }

   129     @Compare public String classCastException() {

   130         try {

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

   132             return "" + i.intValue();

   133         } catch (ClassCastException ex) {

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

   135         }

   136     }

   138     @Compare public String methodThatThrowsException() throws Exception {

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

   140         return "should not happen";

   141     }

   143     @Compare public Object voidReturnType() throws Exception {

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

   145     }

   147     @Retention(RetentionPolicy.RUNTIME)

   148     @interface Ann {

   149     }

   151     @Compare public String annoClass() throws Exception {

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

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

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

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

   156     }

   158     @Compare public boolean isAnnotation() {

   159         return Ann.class.isAnnotation();

   160     }

   161     @Compare public boolean isNotAnnotation() {

   162         return String.class.isAnnotation();

   163     }

   164     @Compare public boolean isNotAnnotationEnum() {

   165         return E.class.isAnnotation();

   166     }

   167     enum E { A, B };

   168     @Compare public boolean isEnum() {

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

   170     }

   172     @Compare public boolean isNotEnum() {

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

   174     }

   176     @Compare public String newInstanceFails() throws InstantiationException {

   177         try {

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

   179         } catch (IllegalAccessException ex) {

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

   181         }

   182     }

   184     @Compare public String paramTypes() throws Exception {

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

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

   187         return pt[0].getName();

   188     }

   189     @Compare public String paramTypesNotFound() throws Exception {

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

   191     }

   192     @Compare public int methodWithArgs() throws Exception {

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

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

   195     }

   197     @Compare public String classGetNameForByte() {

   198          return byte.class.getName();

   199     }

   200     @Compare public String classGetNameForBaseObject() {

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

   202     }

   203     @Compare public String classGetNameForJavaObject() {

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

   205     }

   206     @Compare public String classGetNameForObjectArray() {

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

   208     }

   209     @Compare public String classGetNameForSimpleIntArray() {

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

   211     }

   212     @Compare public boolean sameClassGetNameForSimpleCharArray() {

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

   214     }

   215     @Compare public String classGetNameForMultiIntArray() {

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

   217     }

   218     @Compare public String classGetNameForMultiIntArrayInner() {

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

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

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

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

   223     }

   224     @Compare public String classGetNameForMultiStringArray() {

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

   226     }

   228     @Compare public String classForByte() throws Exception {

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

   230     }

   232     @Compare public String classForUnknownArray() {

   233         try {

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

   235         } catch (Exception ex) {

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

   237         }

   238     }

   240     @Compare public String classForUnknownDeepArray() {

   241         try {

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

   243         } catch (Exception ex) {

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

   245         }

   246     }

   248     @Compare public String componentGetNameForObjectArray() {

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

   250     }

   251     @Compare public boolean sameComponentGetNameForObjectArray() {

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

   253     }

   254     @Compare public String componentGetNameForSimpleIntArray() {

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

   256     }

   257     @Compare public String componentGetNameForMultiIntArray() {

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

   259     }

   260     @Compare public String componentGetNameForMultiStringArray() {

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

   262         StringBuilder sb = new StringBuilder();

   263         for (;;) {

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

   265             c = c.getComponentType();

   266             if (c == null) {

   267                 break;

   268             }

   269         }

   270         return sb.toString();

   271     }

   273     @Compare public boolean isArray() {

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

   275     }

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

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

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

   280         Collections.sort(list);

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

   282     }

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

   285     private static Object newObject() {

   286         return new Object();

   287     }

   289     @Factory

   290     public static Object[] create() {

   291         return VMTest.create(ReflectionTest.class);

   292     }

   294 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sat, 28 Sep 2013 12:03:59 +0200
branch	javac
changeset 1321	7a78a84ab583
parent 1312	bf0b56f2dca2
child 1376	8e600271bba1
permissions	-rw-r--r--