hg/bck2brwsr: rt/emul/compacttest/src/test/java/org/apidesign/bck2brwsr/tck/ReflectionTest.java@c3dee54ecc15

     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 boolean RunnableRunReturnsVoid() throws NoSuchMethodException {

    79         return Runnable.class.getMethod("run").getReturnType() == Void.TYPE;

    80     }

    82     @Compare public String isRunnableDeclaresRunMethod() throws NoSuchMethodException {

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

    84     }

    86     @Compare public String intValue() throws Exception {

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

    88     }

    90     @Compare public String getMethodWithArray() throws Exception {

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

    92     }

    94     @Compare public String namesOfMethods() {

    95         StringBuilder sb = new StringBuilder();

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

    97         int i = 0;

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

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

   100         }

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

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

   103         }

   104         return sb.toString();

   105     }

   107     @Compare

   108     public String namesOfDeclaredMethods() {

   109         StringBuilder sb = new StringBuilder();

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

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

   112         if (methods.length != 2) {

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

   114         }

   115         int i = 0;

   116         for (Method m : methods) {

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

   118         }

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

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

   121         }

   122         return sb.toString();

   123     }

   125     @Compare public String paramsOfConstructors() {

   126         StringBuilder sb = new StringBuilder();

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

   128         int i = 0;

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

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

   131         }

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

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

   134         }

   135         return sb.toString();

   136     }

   138     @Compare public String namesOfDeclaringClassesOfMethods() {

   139         StringBuilder sb = new StringBuilder();

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

   141         int i = 0;

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

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

   144         }

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

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

   147         }

   148         return sb.toString();

   149     }

   151     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

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

   153         return "should not happen";

   154     }

   156     @Compare public String classCastException() {

   157         try {

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

   159             return "" + i.intValue();

   160         } catch (ClassCastException ex) {

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

   162         }

   163     }

   165     @Compare public String methodThatThrowsException() throws Exception {

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

   167         return "should not happen";

   168     }

   170     @Compare public Object voidReturnType() throws Exception {

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

   172     }

   174     @Retention(RetentionPolicy.RUNTIME)

   175     @interface Ann {

   176     }

   178     @Compare public String annoClass() throws Exception {

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

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

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

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

   183     }

   185     @Compare public boolean isAnnotation() {

   186         return Ann.class.isAnnotation();

   187     }

   188     @Compare public boolean isNotAnnotation() {

   189         return String.class.isAnnotation();

   190     }

   191     @Compare public boolean isNotAnnotationEnum() {

   192         return E.class.isAnnotation();

   193     }

   194     enum E { A, B };

   195     @Compare public boolean isEnum() {

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

   197     }

   199     @Compare public boolean isNotEnum() {

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

   201     }

   203     @Compare public String newInstanceFails() {

   204         try {

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

   206         } catch (IllegalAccessException ex) {

   207             return "failure";

   208         } catch (InstantiationException ex) {

   209             return "failure";

   210         }

   211     }

   213     @Compare public String paramTypes() throws Exception {

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

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

   216         return pt[0].getName();

   217     }

   218     @Compare public String paramTypesNotFound() throws Exception {

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

   220     }

   221     @Compare public int methodWithArgs() throws Exception {

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

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

   224     }

   226     @Compare public String classGetNameForByte() {

   227          return byte.class.getName();

   228     }

   229     @Compare public String classGetNameForBaseObject() {

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

   231     }

   232     @Compare public String classGetNameForJavaObject() {

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

   234     }

   235     @Compare public String classGetNameForObjectArray() {

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

   237     }

   238     @Compare public String classGetNameForSimpleIntArray() {

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

   240     }

   241     @Compare public boolean sameClassGetNameForSimpleCharArray() {

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

   243     }

   244     @Compare public String classGetNameForMultiIntArray() {

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

   246     }

   247     @Compare public String classGetNameForMultiIntArrayInner() {

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

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

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

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

   252     }

   253     @Compare public String classGetNameForMultiStringArray() {

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

   255     }

   257     @Compare public String classForByte() throws Exception {

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

   259     }

   261     @Compare public String classForUnknownArray() {

   262         try {

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

   264         } catch (Exception ex) {

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

   266         }

   267     }

   269     @Compare public String classForUnknownDeepArray() {

   270         try {

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

   272         } catch (Exception ex) {

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

   274         }

   275     }

   277     @Compare public int callAbst() throws Exception {

   278         class Impl extends Abst {

   279             @Override

   280             public int abst() {

   281                 return 10;

   282             }

   283         }

   284         Abst impl = new Impl();

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

   286     }

   288     @Compare public String componentGetNameForObjectArray() {

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

   290     }

   291     @Compare public boolean sameComponentGetNameForObjectArray() {

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

   293     }

   294     @Compare public String componentGetNameForSimpleIntArray() {

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

   296     }

   297     @Compare public String componentGetNameForMultiIntArray() {

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

   299     }

   300     @Compare public String componentGetNameForMultiStringArray() {

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

   302         StringBuilder sb = new StringBuilder();

   303         for (;;) {

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

   305             c = c.getComponentType();

   306             if (c == null) {

   307                 break;

   308             }

   309         }

   310         return sb.toString();

   311     }

   313     @Compare public boolean isArray() {

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

   315     }

   317     @Compare public String copyDataViaReflection() throws Exception {

   318         Data d = new Data();

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

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

   322         Object val = getter.invoke(d);

   324         Data clone = new Data();

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

   326         setter.invoke(clone, val);

   328         return clone.getName();

   329     }

   331     @Compare public String copyStaticDataViaReflection() throws Exception {

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

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

   335         Object val = getter.invoke(null);

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

   338         setter.invoke(null, val);

   340         return Data.getStatic();

   341     }

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

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

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

   346         Collections.sort(list);

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

   348     }

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

   351     private static Object newObject() {

   352         return new Object();

   353     }

   355     @Factory

   356     public static Object[] create() {

   357         return VMTest.create(ReflectionTest.class);

   358     }

   360     public static abstract class Abst {

   361         public abstract int abst();

   362     }

   364     public static final class Data {

   365         private String name;

   366         private static String nameStatic;

   368         public String getName() {

   369             return name;

   370         }

   372         public void setName(String name) {

   373             this.name = name;

   374         }

   376         public static String getStatic() {

   377             return nameStatic;

   378         }

   380         public static void setStatic(String n) {

   381             nameStatic = n;

   382         }

   383     }

   384 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 20 Mar 2016 15:26:19 +0100
changeset 1902	c3dee54ecc15
parent 1900	7865a00c30ef
permissions	-rw-r--r--