--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/DatagramChannel/AdaptorConnect.java	Sat Nov 02 10:02:18 2019 +0000
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2019, 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 8232673
+ * @summary Test DatagramChannel socket adaptor connect method with illegal args
+ * @run testng AdaptorConnect
+ */
+
+import java.net.DatagramSocket;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.net.SocketException;
+import java.nio.channels.DatagramChannel;
+import static java.net.InetAddress.getLoopbackAddress;
+
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+@Test
+public class AdaptorConnect {
+
+    /**
+     * Invoke the given socket's connect method with illegal arguments.
+     */
+    private void testConnectWithIllegalArguments(DatagramSocket s) {
+        assertThrows(IllegalArgumentException.class, () -> s.connect(null));
+        assertThrows(IllegalArgumentException.class, () -> s.connect(null, 7000));
+        assertThrows(IllegalArgumentException.class, () -> s.connect(getLoopbackAddress(), -1));
+        assertThrows(IllegalArgumentException.class, () -> s.connect(getLoopbackAddress(), 100_000));
+
+        SocketAddress sillyAddress = new SocketAddress() { };
+        assertThrows(IllegalArgumentException.class, () -> s.connect(sillyAddress));
+
+        SocketAddress unresolved = InetSocketAddress.createUnresolved("foo", 7777);
+        assertThrows(SocketException.class, () -> s.connect(unresolved));
+    }
+
+    /**
+     * Test connect method with an open socket.
+     */
+    public void testOpenSocket() throws Exception {
+        try (DatagramChannel dc = DatagramChannel.open()) {
+            DatagramSocket s = dc.socket();
+
+            testConnectWithIllegalArguments(s);
+
+            // should not be bound or connected
+            assertTrue(s.getLocalSocketAddress() == null);
+            assertTrue(s.getRemoteSocketAddress() == null);
+
+            // connect(SocketAddress)
+            var remote1 = new InetSocketAddress(getLoopbackAddress(), 7001);
+            s.connect(remote1);
+            assertEquals(s.getRemoteSocketAddress(), remote1);
+            testConnectWithIllegalArguments(s);
+            assertEquals(s.getRemoteSocketAddress(), remote1);
+
+            // connect(SocketAddress)
+            var remote2 = new InetSocketAddress(getLoopbackAddress(), 7002);
+            s.connect(remote2);
+            assertEquals(s.getRemoteSocketAddress(), remote2);
+            testConnectWithIllegalArguments(s);
+            assertEquals(s.getRemoteSocketAddress(), remote2);
+
+            // connect(InetAddress, int)
+            var remote3 = new InetSocketAddress(getLoopbackAddress(), 7003);
+            s.connect(remote3.getAddress(), remote3.getPort());
+            assertEquals(s.getRemoteSocketAddress(), remote3);
+            testConnectWithIllegalArguments(s);
+            assertEquals(s.getRemoteSocketAddress(), remote3);
+
+            // connect(InetAddress, int)
+            var remote4 = new InetSocketAddress(getLoopbackAddress(), 7004);
+            s.connect(remote4.getAddress(), remote4.getPort());
+            assertEquals(s.getRemoteSocketAddress(), remote4);
+            testConnectWithIllegalArguments(s);
+            assertEquals(s.getRemoteSocketAddress(), remote4);
+        }
+    }
+
+    /**
+     * Test connect method with a closed socket.
+     */
+    public void testClosedSocket() throws Exception {
+        DatagramChannel dc = DatagramChannel.open();
+        DatagramSocket s = dc.socket();
+        dc.close();
+
+        testConnectWithIllegalArguments(s);
+
+        // connect does not throw an exception when closed
+        var remote = new InetSocketAddress(getLoopbackAddress(), 7001);
+        s.connect(remote);
+        s.connect(remote.getAddress(), remote.getPort());
+    }
+}