hg/bck2brwsr: rt/emul/compacttest/src/test/java/org/apidesign/bck2brwsr/tck/ReflectionTest.java@7865a00c30ef

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012-2015 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.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;

    33 /**

    34  *

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

    36  */

    37 public class ReflectionTest {

    38     @Compare public boolean nonNullThis() {

    39         return this == null;

    40     }

    42     @Compare public String intType() {

    43         return Integer.TYPE.toString();

    44     }

    46     @Compare public String voidType() throws Exception {

    47         return void.class.toString();

    48     }

    50     @Compare public String longClass() {

    51         return long.class.toString();

    52     }

    54     @Compare public boolean isRunnableInterface() {

    55         return Runnable.class.isInterface();

    56     }

    58     @Compare public boolean isAssignableToPrimitiveType() {

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

    60     }

    62     @Compare public boolean isAssignableFromPrimitiveType() {

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

    64     }

    66     @Compare public boolean isAssignableLongFromInt() {

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

    68     }

    70     @Compare public boolean isAssignableIntFromLong() {

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

    72     }

    74     @Compare public String isRunnableHasRunMethod() throws NoSuchMethodException {

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

    76     }

    78     @Compare public String isRunnableDeclaresRunMethod() throws NoSuchMethodException {

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

    80     }

    82     @Compare public String intValue() throws Exception {

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

    84     }

    86     @Compare public String getMethodWithArray() throws Exception {

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

    88     }

    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     }

   103     @Compare

   104     public String namesOfDeclaredMethods() {

   105         StringBuilder sb = new StringBuilder();

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

   107         Method[] methods = StaticUse.class.getDeclaredMethods();

   108         if (methods.length != 2) {

   109             throw new IllegalStateException("Expecting just two methods, was: " + methods.length);

   110         }

   111         int i = 0;

   112         for (Method m : methods) {

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

   114         }

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

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

   117         }

   118         return sb.toString();

   119     }

   121     @Compare public String paramsOfConstructors() {

   122         StringBuilder sb = new StringBuilder();

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

   124         int i = 0;

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

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

   127         }

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

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

   130         }

   131         return sb.toString();

   132     }

   134     @Compare public String namesOfDeclaringClassesOfMethods() {

   135         StringBuilder sb = new StringBuilder();

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

   137         int i = 0;

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

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

   140         }

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

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

   143         }

   144         return sb.toString();

   145     }

   147     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

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

   149         return "should not happen";

   150     }

   152     @Compare public String classCastException() {

   153         try {

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

   155             return "" + i.intValue();

   156         } catch (ClassCastException ex) {

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

   158         }

   159     }

   161     @Compare public String methodThatThrowsException() throws Exception {

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

   163         return "should not happen";

   164     }

   166     @Compare public Object voidReturnType() throws Exception {

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

   168     }

   170     @Retention(RetentionPolicy.RUNTIME)

   171     @interface Ann {

   172     }

   174     @Compare public String annoClass() throws Exception {

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

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

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

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

   179     }

   181     @Compare public boolean isAnnotation() {

   182         return Ann.class.isAnnotation();

   183     }

   184     @Compare public boolean isNotAnnotation() {

   185         return String.class.isAnnotation();

   186     }

   187     @Compare public boolean isNotAnnotationEnum() {

   188         return E.class.isAnnotation();

   189     }

   190     enum E { A, B };

   191     @Compare public boolean isEnum() {

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

   193     }

   195     @Compare public boolean isNotEnum() {

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

   197     }

   199     @Compare public String newInstanceFails() {

   200         try {

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

   202         } catch (IllegalAccessException ex) {

   203             return "failure";

   204         } catch (InstantiationException ex) {

   205             return "failure";

   206         }

   207     }

   209     @Compare public String paramTypes() throws Exception {

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

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

   212         return pt[0].getName();

   213     }

   214     @Compare public String paramTypesNotFound() throws Exception {

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

   216     }

   217     @Compare public int methodWithArgs() throws Exception {

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

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

   220     }

   222     @Compare public String classGetNameForByte() {

   223          return byte.class.getName();

   224     }

   225     @Compare public String classGetNameForBaseObject() {

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

   227     }

   228     @Compare public String classGetNameForJavaObject() {

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

   230     }

   231     @Compare public String classGetNameForObjectArray() {

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

   233     }

   234     @Compare public String classGetNameForSimpleIntArray() {

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

   236     }

   237     @Compare public boolean sameClassGetNameForSimpleCharArray() {

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

   239     }

   240     @Compare public String classGetNameForMultiIntArray() {

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

   242     }

   243     @Compare public String classGetNameForMultiIntArrayInner() {

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

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

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

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

   248     }

   249     @Compare public String classGetNameForMultiStringArray() {

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

   251     }

   253     @Compare public String classForByte() throws Exception {

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

   255     }

   257     @Compare public String classForUnknownArray() {

   258         try {

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

   260         } catch (Exception ex) {

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

   262         }

   263     }

   265     @Compare public String classForUnknownDeepArray() {

   266         try {

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

   268         } catch (Exception ex) {

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

   270         }

   271     }

   273     @Compare public int callAbst() throws Exception {

   274         class Impl extends Abst {

   275             @Override

   276             public int abst() {

   277                 return 10;

   278             }

   279         }

   280         Abst impl = new Impl();

   281         return (int) Abst.class.getMethod("abst").invoke(impl);

   282     }

   284     @Compare public String componentGetNameForObjectArray() {

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

   286     }

   287     @Compare public boolean sameComponentGetNameForObjectArray() {

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

   289     }

   290     @Compare public String componentGetNameForSimpleIntArray() {

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

   292     }

   293     @Compare public String componentGetNameForMultiIntArray() {

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

   295     }

   296     @Compare public String componentGetNameForMultiStringArray() {

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

   298         StringBuilder sb = new StringBuilder();

   299         for (;;) {

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

   301             c = c.getComponentType();

   302             if (c == null) {

   303                 break;

   304             }

   305         }

   306         return sb.toString();

   307     }

   309     @Compare public boolean isArray() {

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

   311     }

   313     @Compare public String copyDataViaReflection() throws Exception {

   314         Data d = new Data();

   315         d.setName("Hello world!");

   317         Method getter = d.getClass().getMethod("getName");

   318         Object val = getter.invoke(d);

   320         Data clone = new Data();

   321         Method setter = d.getClass().getMethod("setName", String.class);

   322         setter.invoke(clone, val);

   324         return clone.getName();

   325     }

   327     @Compare public String copyStaticDataViaReflection() throws Exception {

   328         Data.setStatic("Hello world!");

   330         Method getter = Data.class.getMethod("getStatic");

   331         Object val = getter.invoke(null);

   333         Method setter = Data.class.getMethod("setStatic", String.class);

   334         setter.invoke(null, val);

   336         return Data.getStatic();

   337     }

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

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

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

   342         Collections.sort(list);

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

   344     }

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

   347     private static Object newObject() {

   348         return new Object();

   349     }

   351     @Factory

   352     public static Object[] create() {

   353         return VMTest.create(ReflectionTest.class);

   354     }

   356     public static abstract class Abst {

   357         public abstract int abst();

   358     }

   360     public static final class Data {

   361         private String name;

   362         private static String nameStatic;

   364         public String getName() {

   365             return name;

   366         }

   368         public void setName(String name) {

   369             this.name = name;

   370         }

   372         public static String getStatic() {

   373             return nameStatic;

   374         }

   376         public static void setStatic(String n) {

   377             nameStatic = n;

   378         }

   379     }

   380 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 20 Mar 2016 09:25:47 +0100
changeset 1900	7865a00c30ef
parent 1838	493d5960d520
child 1902	c3dee54ecc15
permissions	-rw-r--r--