1 files changed, 165 insertions, 0 deletions
diff --git a/test/086-null-super/src/Main.java b/test/086-null-super/src/Main.java
new file mode 100644
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+++ b/test/086-null-super/src/Main.java
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
+
+/**
+ * Class loader test.
+ */
+public class Main {
+    /**
+     * Thrown when an unexpected Exception is caught internally.
+     */
+    static class TestFailed extends Exception {
+        public TestFailed(Throwable cause) {
+            super(cause);
+        }
+    }
+
+    /**
+     * A class loader which loads classes from the dex file
+     * "test.jar". However, it will return null when asked to load the
+     * class InaccessibleSuper.
+     *
+     * When testing code calls BrokenDexLoader's findBrokenClass(),
+     * a BrokenDexLoader will be the defining loader for the class
+     * Inaccessible.  The VM will call the defining loader for
+     * "InaccessibleSuper", which will return null, which the VM
+     * should be able to deal with gracefully.
+     *
+     * Note that this depends heavily on the Dalvik test harness.
+     */
+    static class BrokenDexLoader extends ClassLoader {
+
+        /** We return null when asked to load InaccessibleSuper. */
+        private static class InaccessibleSuper {}
+        private static class Inaccessible extends InaccessibleSuper {}
+
+        private static final String SUPERCLASS_NAME =
+                "Main$BrokenDexLoader$InaccessibleSuper";
+        private static final String CLASS_NAME =
+                "Main$BrokenDexLoader$Inaccessible";
+
+        private static final String DEX_FILE = "test.jar";
+
+        public BrokenDexLoader(ClassLoader parent) {
+            super(parent);
+        }
+
+        /**
+         * Finds the class with the specified binary name, from DEX_FILE.
+         *
+         * If we don't find a match, we throw an exception.
+         */
+        private Class<?> findDexClass(String name)
+                throws TestFailed, InvocationTargetException
+        {
+
+            try {
+                /*
+                 * Find the DexFile class, and construct a DexFile object
+                 * through reflection, then call loadCLass on it.
+                 */
+                Class mDexClass = ClassLoader.getSystemClassLoader().
+                        loadClass("dalvik/system/DexFile");
+                Constructor ctor = mDexClass.
+                        getConstructor(new Class[] {String.class});
+                Object mDexFile = ctor.newInstance(DEX_FILE);
+                Method meth = mDexClass.
+                        getMethod("loadClass",
+                            new Class[] { String.class, ClassLoader.class });
+                /*
+                 * Invoking loadClass on CLASS_NAME is expected to
+                 * throw an InvocationTargetException. Anything else
+                 * is an error we can't recover from.
+                 */
+                meth.invoke(mDexFile, name, this);
+            } catch (NoSuchMethodException nsme) {
+                throw new TestFailed(nsme);
+            } catch (InstantiationException ie) {
+                throw new TestFailed(ie);
+            } catch (IllegalAccessException iae) {
+                throw new TestFailed(iae);
+            } catch (ClassNotFoundException cnfe) {
+                throw new TestFailed(cnfe);
+            }
+
+            return null;
+        }
+
+        /**
+         * Load a class.
+         *
+         * Return null if the class's name is SUPERCLASS_NAME;
+         * otherwise invoke the super's loadClass method.
+         */
+        public Class<?> loadClass(String name, boolean resolve)
+                throws ClassNotFoundException
+        {
+            if (SUPERCLASS_NAME.equals(name)) {
+                return null;
+            }
+
+            return super.loadClass(name, resolve);
+        }
+
+        /**
+         * Attempt to find the class with the superclass we refuse to
+         * load.  This is expected to throw an
+         * InvocationTargetException, with a NullPointerException as
+         * its cause.
+         */
+        public void findBrokenClass()
+                throws TestFailed, InvocationTargetException
+        {
+            findDexClass(CLASS_NAME);
+        }
+    }
+
+    /**
+     * Main entry point.
+     */
+    public static void main(String[] args)
+            throws TestFailed, ClassNotFoundException {
+        /*
+         * Run test.
+         */
+        testFailLoadAndGc();
+    }
+
+    /**
+     * See if we can GC after a failed load.
+     */
+    static void testFailLoadAndGc() throws TestFailed {
+        try {
+            BrokenDexLoader loader;
+
+            loader = new BrokenDexLoader(ClassLoader.getSystemClassLoader());
+            loader.findBrokenClass();
+            System.err.println("ERROR: Inaccessible was accessible");
+        } catch (InvocationTargetException ite) {
+            Throwable cause = ite.getCause();
+            if (cause instanceof NullPointerException) {
+                System.err.println("Got expected ITE/NPE");
+            } else {
+                System.err.println("Got unexpected ITE");
+                ite.printStackTrace();
+            }
+        }
+    }
+}