--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/jvmci/compilerToVM/ResolvePossiblyCachedConstantInPoolTest.java	Sat Feb 20 11:49:45 2016 +0300
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2016, 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 8138708
+ * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9" | os.simpleArch == "aarch64")
+ * @library /testlibrary /test/lib /
+ * @compile ../common/CompilerToVMHelper.java
+ * @build sun.hotspot.WhiteBox
+ *        compiler.jvmci.compilerToVM.ResolvePossiblyCachedConstantInPoolTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ *                              jdk.vm.ci.hotspot.CompilerToVMHelper
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
+ *                   compiler.jvmci.compilerToVM.ResolvePossiblyCachedConstantInPoolTest
+ */
+
+package compiler.jvmci.compilerToVM;
+
+import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses;
+import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes;
+import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.*;
+import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry;
+import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator;
+import java.util.HashMap;
+import java.util.Map;
+import jdk.test.lib.Asserts;
+import jdk.vm.ci.hotspot.CompilerToVMHelper;
+import jdk.vm.ci.meta.ConstantPool;
+
+/**
+ * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.resolvePossiblyCachedConstantInPool} method
+ */
+public class ResolvePossiblyCachedConstantInPoolTest {
+
+    public static void main(String[] args) throws Exception {
+        Map<ConstantTypes, Validator> typeTests = new HashMap<>();
+        typeTests.put(CONSTANT_STRING, ResolvePossiblyCachedConstantInPoolTest::validateString);
+        ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);
+        // The next "Class.forName" is here for the following reason.
+        // When class is initialized, constant pool cache is available.
+        // This method works only with cached constant pool.
+        for (DummyClasses dummy : DummyClasses.values()) {
+            Class.forName(dummy.klass.getName());
+        }
+        testCase.test();
+    }
+
+    private static void validateString(ConstantPool constantPoolCTVM,
+                                       ConstantTypes cpType,
+                                       DummyClasses dummyClass,
+                                       int cpi) {
+        TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, cpi);
+        if (entry == null) {
+            return;
+        }
+        int index = cpi;
+        String cached = "";
+        int cpci = dummyClass.getCPCacheIndex(cpi);
+        if (cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) {
+            index = cpci;
+            cached = "cached ";
+        }
+        Object constantInPool = CompilerToVMHelper.resolvePossiblyCachedConstantInPool(constantPoolCTVM, index);
+        String stringToVerify = (String) constantInPool;
+        String stringToRefer = entry.name;
+        if (stringToRefer.equals("") && cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) {
+            stringToRefer = null; // tested method returns null for cached empty strings
+        }
+        String msg = String.format("Wrong string accessed by %sconstant pool index %d", cached, index);
+        Asserts.assertEQ(stringToRefer, stringToVerify, msg);
+    }
+}