108 lines
4.3 KiB
Java
108 lines
4.3 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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public class Main {
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public static void main(String[] args) {
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System.loadLibrary(args[0]);
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testGetFieldId(TestClass.class, "intField", "");
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testGetFieldId(TestClass.class, "intField", "I");
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testGetFieldId(TestClass.class, "intField", "int");
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testGetFieldId(TestClass.class, "intField", "Lint;");
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testGetFieldId(TestClass.class, "stringField", "I");
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testGetFieldId(TestClass.class, "stringField", "Ljava/lang/String;");
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testGetFieldId(TestClass.class, "stringField", "java/lang/String");
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testGetFieldId(TestClass.class, "stringField", "Ljava.lang.String;");
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testGetFieldId(TestClass.class, "stringField", "java.lang.String");
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try {
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Method get = Main.class.getDeclaredMethod("getFieldId",
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Class.class,
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String.class,
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String.class);
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MyClassLoader loader = new MyClassLoader(Main.class.getClassLoader());
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Class<?> otherMain = Class.forName("Main", true, loader);
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Method m = otherMain.getDeclaredMethod("testClassLoading", Method.class);
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m.invoke(null, get);
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} catch (Throwable t) {
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t.printStackTrace(System.out);
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}
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}
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public static void testClassLoading(Method get) throws Exception {
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System.out.println("Test that MyClassLoader.loadClass(\"Bad.Class\") shall not be called.");
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String[] bad_class_names = { "Bad/Class", "Bad.Class", "LBad.Class;" };
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for (String signature : bad_class_names) {
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try {
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get.invoke(null, TestClass.class, "bogus", signature);
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System.out.println("FAIL!");
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} catch (InvocationTargetException ite) {
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if (!(ite.getCause() instanceof NoSuchFieldError) ||
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!(ite.getCause().getCause() instanceof NoClassDefFoundError)) {
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throw ite;
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}
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NoClassDefFoundError ncdfe = (NoClassDefFoundError) ite.getCause().getCause();
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System.out.println(" Error message for " + signature + ": " + ncdfe.getMessage());
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}
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}
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}
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public static void testGetFieldId(Class<?> cls, String name, String signature) {
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System.out.println("getFieldId(" + cls + ", \"" + name + "\", \"" + signature + "\")");
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try {
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boolean result = getFieldId(cls, name, signature);
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System.out.println("Result: " + result);
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} catch (Throwable t) {
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System.out.println("Caught " + DescribeThrowable(t));
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for (Throwable cause = t.getCause(); cause != null; cause = cause.getCause()) {
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System.out.println(" caused by " + DescribeThrowable(cause));
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}
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}
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}
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public static String DescribeThrowable(Throwable t) {
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return PRINT_MESSAGE ? t.getClass().getName() + ": " + t.getMessage()
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: t.getClass().getName();
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}
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public static native boolean getFieldId(Class<?> cls, String name, String signature);
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// Set to true to see actual messages.
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public static final boolean PRINT_MESSAGE = false;
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}
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class TestClass {
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public int intField;
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public String stringField;
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}
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class MyClassLoader extends DefiningLoader {
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public MyClassLoader(ClassLoader parent) {
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super(parent);
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}
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public Class<?> loadClass(String name) throws ClassNotFoundException
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{
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if (name.equals("Bad.Class")) {
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throw new Error("findClass(\"Bad.Class\")");
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}
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return super.loadClass(name);
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}
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}
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