--- /dev/null	2015-07-25 15:02:20.097409468 -0700
+++ new/test/java/lang/String/CompactString/Equals.java	2015-10-30 14:04:11.495229486 -0700
@@ -0,0 +1,81 @@
+/*
+ * 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.
+ */
+
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+import static org.testng.Assert.assertEquals;
+
+/*
+ * @test
+ * @bug 8077559
+ * @summary Tests Compact String. This one is for String.equals.
+ * @run testng/othervm -XX:+CompactStrings Equals
+ * @run testng/othervm -XX:-CompactStrings Equals
+ */
+
+public class Equals extends CompactString {
+
+    @DataProvider
+    public Object[][] provider() {
+        return new Object[][] {
+                new Object[] { STRING_EMPTY, "", true },
+                new Object[] { STRING_EMPTY, "A", false },
+                new Object[] { STRING_EMPTY, new StringBuffer(""), false },
+                new Object[] { STRING_L1, "A", true },
+                new Object[] { STRING_L1, "", false },
+                new Object[] { STRING_L1, new StringBuffer("A"), false },
+                new Object[] { STRING_L2, "AB", true },
+                new Object[] { STRING_L2, "", false },
+                new Object[] { STRING_L2, new StringBuilder("AB"), false },
+                new Object[] { STRING_L4, "ABCD", true },
+                new Object[] { STRING_L4, "abc", false },
+                new Object[] { STRING_L4, "", false },
+                new Object[] { STRING_LLONG, "ABCDEFGH", true },
+                new Object[] { STRING_LLONG, "ABCDEFG", false },
+                new Object[] { STRING_LLONG, new StringBuilder("ABCDEFGH"),
+                        false },
+                new Object[] { STRING_U1, "\uFF21", true },
+                new Object[] { STRING_U1, "", false },
+                new Object[] { STRING_U2, "\uFF21\uFF22", true },
+                new Object[] { STRING_U2, "\uFF21", false },
+                new Object[] { STRING_U2, "", false },
+                new Object[] { STRING_U2, new StringBuilder("\uFF21\uFF22"),
+                        false },
+                new Object[] { STRING_M12, "\uFF21A", true },
+                new Object[] { STRING_M12, "A\uFF21", false },
+                new Object[] { STRING_M11, "A\uFF21", true },
+                new Object[] { STRING_M11, new StringBuilder("\uFF21A"), false }, };
+    }
+
+    @Test(dataProvider = "provider")
+    public void testEquals(String str, Object obj, boolean expected) {
+        map.get(str).forEach(
+                (source, data) -> {
+                    assertEquals(data.equals(obj), expected, String.format(
+                            "testing String(%s).equals(%s), source : %s, ",
+                            escapeNonASCIIs(data),
+                            escapeNonASCIIs(obj.toString()), source));
+                });
+    }
+}