--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/modules/ImageFile/ImageReadTest.java	Thu Jun 25 18:25:19 2015 +0200
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 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 reading resource content.
+ * @test ImageReadTest
+ * @summary Unit test for JVM_ImageRead() method
+ * @library /testlibrary /../../test/lib
+ * @build LocationConstants ImageReadTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+MemoryMapImage ImageReadTest +
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-MemoryMapImage ImageReadTest -
+ */
+
+import java.io.File;
+import java.nio.ByteBuffer;
+import sun.hotspot.WhiteBox;
+import static jdk.test.lib.Asserts.*;
+
+public class ImageReadTest implements LocationConstants {
+
+    public static final WhiteBox wb = WhiteBox.getWhiteBox();
+
+    public static void main(String... args) throws Exception {
+        String javaHome = System.getProperty("java.home");
+        String imageFile = javaHome + File.separator + "lib"
+                + File.separator + "modules" + File.separator
+                + "bootmodules.jimage";
+
+        if (!(new File(imageFile)).exists()) {
+            System.out.printf("Test skipped.");
+            return;
+        }
+
+        boolean isMMap = args[0].equals("+");
+
+        long id = wb.imageOpenImage(imageFile, isMMap);
+
+        final String mm = isMMap ? "-XX:+MemoryMapImage" : "-XX:-MemoryMapImage";
+        final int magic = 0xCAFEBABE;
+
+        String className = "/java.base/java/lang/String.class";
+        long[] offsetArr = wb.imageFindAttributes(id, className.getBytes());
+        long offset = offsetArr[LOCATION_ATTRIBUTE_OFFSET];
+        long size = offsetArr[LOCATION_ATTRIBUTE_UNCOMPRESSED];
+
+        // positive: read
+        ByteBuffer buf = ByteBuffer.allocateDirect((int) size);
+        assertTrue(wb.imageRead(id, offset, buf, size), "Failed. Read operation returned false, should be true");
+        int m = buf.getInt();
+        assertTrue(m == magic, "Failed. Read operation returned true but wrong magic = " + magic);
+
+        // positive: mmap
+        if (isMMap) {
+            long dataAddr = wb.imageGetDataAddress(id);
+            assertFalse(dataAddr == 0L, "Failed. Did not obtain data address on mmapped test");
+            int data = wb.imageGetIntAtAddress(dataAddr, (int) offset, true);
+            assertTrue(data == magic, "Failed. MMap operation returned true but wrong magic = " + data);
+        }
+
+        // negative: wrong offset
+        boolean success = wb.imageRead(id, -100, buf, size);
+        assertFalse(success, "Failed. Read operation (wrong offset): returned true");
+
+        // negative: too big offset
+        long filesize = new File(imageFile).length();
+        success = wb.imageRead(id, filesize + 1, buf, size);
+        assertFalse(success, "Failed. Read operation (offset > file size) returned true");
+
+        // negative: negative size
+        success = wb.imageRead(id, offset, buf, -100);
+        assertFalse(success, "Failed. Read operation (negative size) returned true");
+
+        wb.imageCloseImage(id);
+    }
+}