check for thread interrupt in process

src/main/java/redis/clients/jedis/JedisShardedPubSubBase.java

@@ -99,7 +99,7 @@ private void process() {
       } else {
         throw new JedisException("Unknown message type: " + reply);
       }
-    } while (isSubscribed());
+    } while (!Thread.currentThread().isInterrupted() && isSubscribed());
 
 //    /* Invalidate instance since this thread is no longer listening */
 //    this.client = null;

src/test/java/redis/clients/jedis/JedisShardedPubSubBaseTest.java

@@ -0,0 +1,56 @@
+package redis.clients.jedis;
+
+import junit.framework.TestCase;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+import static redis.clients.jedis.Protocol.ResponseKeyword.SMESSAGE;
+import static redis.clients.jedis.Protocol.ResponseKeyword.SSUBSCRIBE;
+
+public class JedisShardedPubSubBaseTest extends TestCase {
+
+    public void testProceed() throws InterruptedException {
+        // setup
+        final JedisShardedPubSubBase<String> pubSub = new JedisShardedPubSubBase<String>() {
+
+            @Override
+            public void onSMessage(String channel, String message) {
+                fail("this should not happen when thread is interrupted");
+            }
+
+            @Override
+            protected String encode(byte[] raw) {
+                return new String(raw);
+            }
+
+        };
+
+        final Connection mockConnection = mock(Connection.class);
+        final List<Object> mockSubscribe = Arrays.asList(
+                SSUBSCRIBE.getRaw(), "channel".getBytes(), 1L
+        );
+        final List<Object> mockResponse = Arrays.asList(
+                SMESSAGE.getRaw(), "channel".getBytes(), "message".getBytes()
+        );
+        when(mockConnection.getUnflushedObject()).thenReturn(mockSubscribe, mockResponse);
+
+
+        final CountDownLatch countDownLatch = new CountDownLatch(1);
+        // action
+        final Thread thread = new Thread(() -> {
+            Thread.currentThread().interrupt();
+            pubSub.proceed(mockConnection, "channel");
+
+            countDownLatch.countDown();
+        });
+        thread.start();
+
+        assertTrue(countDownLatch.await(10, TimeUnit.MILLISECONDS));
+
+    }
+}