jdk/test/java/lang/instrument/RedefineMethodWithAnnotationsApp.java
changeset 16022 3f1545eccc6f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/instrument/RedefineMethodWithAnnotationsApp.java	Tue Jan 22 15:25:37 2013 +0100
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.lang.annotation.Annotation;
+import java.lang.instrument.ClassDefinition;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.reflect.Method;
+
+public class RedefineMethodWithAnnotationsApp {
+    public static void main(String args[]) throws Exception {
+        System.out.println("Hello from RedefineMethodWithAnnotationsApp!");
+
+        new RedefineMethodWithAnnotationsApp().doTest();
+
+        System.exit(0);
+    }
+
+    private void doTest() throws Exception {
+        doMethodParameterAnnotationsTest();
+    }
+
+    private void doMethodParameterAnnotationsTest() throws Exception {
+        verifyMethodParameterAnnotationsValue(
+                ParameterAnnotation.STRING_VALUE_1);
+
+        doRedefine(RedefineMethodWithAnnotationsTarget.class);
+
+        verifyMethodParameterAnnotationsValue(
+                ParameterAnnotation.STRING_VALUE_2);
+    }
+
+    private static void verifyMethodParameterAnnotationsValue(
+            String expectedValue) throws Exception {
+        Class<RedefineMethodWithAnnotationsTarget> c =
+                RedefineMethodWithAnnotationsTarget.class;
+        Method method = c.getMethod("annotatedMethod", String.class);
+
+        Annotation [][] parametersAnnotations =
+                method.getParameterAnnotations();
+        if (parametersAnnotations.length != 1) {
+            throw new Exception("Incorrect number of parameters to method: " +
+                    method.getName() + "." +
+                    " Expected: 1," +
+                    " got: " + parametersAnnotations.length);
+        }
+
+        Annotation[] parameterAnnotations = parametersAnnotations[0];
+        if (parameterAnnotations.length != 1) {
+            throw new Exception("Incorrect number of annotations." +
+                    " Expected: 1" +
+                    ", got " + parameterAnnotations.length);
+        }
+
+        Annotation parameterAnnotation = parameterAnnotations[0];
+        if (!(parameterAnnotation instanceof ParameterAnnotation)) {
+            throw new Exception("Incorrect Annotation class." +
+                    " Expected: " + ParameterAnnotation.class.getName() +
+                    ", got: " + parameterAnnotation.getClass().getName());
+        }
+
+        ParameterAnnotation pa = (ParameterAnnotation)parameterAnnotation;
+        String annotationValue = pa.value();
+        if (!expectedValue.equals(annotationValue)) {
+            throw new Exception("Incorrect parameter annotation value." +
+                    " Expected: " + expectedValue +
+                    ", got: " + annotationValue);
+        }
+    }
+
+    private static void doRedefine(Class<?> clazz) throws Exception {
+        // Load the second version of this class.
+        File f = new File(clazz.getName() + ".class");
+        System.out.println("Reading test class from " + f);
+        InputStream redefineStream = new FileInputStream(f);
+
+        byte[] redefineBuffer = NamedBuffer.loadBufferFromStream(redefineStream);
+
+        ClassDefinition redefineParamBlock = new ClassDefinition(
+                clazz, redefineBuffer);
+
+        RedefineMethodWithAnnotationsAgent.getInstrumentation().redefineClasses(
+                new ClassDefinition[] {redefineParamBlock});
+    }
+}