--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/T6665791.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2010, 2015, 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.
+ */
+
+/*
+ * @test
+ * @bug 6665791
+ * @summary com.sun.source.tree.MethodTree.toString() does not output default values
+ * @modules jdk.compiler
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.io.StringWriter;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
+import com.sun.source.tree.ClassTree;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.TreeScanner;
+import java.io.FileWriter;
+
+public class T6665791 {
+    static String test = "public @interface Annotation { boolean booleanProperty() default false; }";
+    static File test_java = new File("Test.java");
+
+    public static void main(String[] args) throws Exception {
+        write(test_java, test);
+
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        try (StandardJavaFileManager manager =
+                compiler.getStandardFileManager(null, null, null)) {
+            Iterable<? extends JavaFileObject> units = manager.getJavaFileObjects(test_java);
+            final StringWriter sw = new StringWriter();
+            JavacTask task = (JavacTask) compiler.getTask(sw, manager, null, null,
+                    null, units);
+
+            new TreeScanner<Boolean, Void>() {
+                @Override
+                public Boolean visitClass(ClassTree arg0, Void arg1) {
+                    sw.write(arg0.toString());
+                    return super.visitClass(arg0, arg1);
+                }
+            }.scan(task.parse(), null);
+
+            System.out.println("output:");
+            System.out.println(sw.toString());
+            String found = sw.toString().replaceAll("\\s+", " ").trim();
+            String expect = test.replaceAll("\\s+", " ").trim();
+            if (!expect.equals(found)) {
+                System.out.println("expect: " + expect);
+                System.out.println("found:  " + found);
+                throw new Exception("unexpected output");
+            }
+        }
+    }
+
+    static void write(File file, String body) throws IOException {
+        FileWriter out = new FileWriter(file);
+        out.write(body);
+        out.close();
+    }
+}