Add test to prove that calls don't hang on command errors #169

Test that proves that connection won't hang if exception is thrown
while processing command in CommandHandler.
This test currently fails, until bug is fixed.

src/test/java/org/redisson/RedissonMapTest.java

@@ -1,5 +1,7 @@
 package org.redisson;
 
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.lambdaworks.redis.RedisException;
 import io.netty.util.concurrent.Future;
 
 import java.io.Serializable;
@@ -12,6 +14,7 @@ import java.util.concurrent.ExecutionException;
 
 import org.junit.Assert;
 import org.junit.Test;
+import org.redisson.codec.JsonJacksonCodec;
 import org.redisson.core.Predicate;
 import org.redisson.core.RMap;
 
@@ -456,4 +459,39 @@ public class RedissonMapTest extends BaseTest {
         Assert.assertEquals(0, map.fastRemove());
         Assert.assertEquals(1, map.size());
     }
+
+    @Test(timeout = 5000)
+    public void testDeserializationErrorReturnsErrorImmediately() throws Exception {
+        redisson.getConfig().setCodec(new JsonJacksonCodec());
+
+        RMap<String, SimpleObjectWithoutDefaultConstructor> map = redisson.getMap("deserializationFailure");
+        SimpleObjectWithoutDefaultConstructor object = new SimpleObjectWithoutDefaultConstructor("test-val");
+
+        Assert.assertEquals("test-val", object.getTestField());
+        map.put("test-key", object);
+
+        try {
+            map.get("test-key");
+            Assert.fail("Expected exception from map.get() call");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static class SimpleObjectWithoutDefaultConstructor {
+
+        private String testField;
+
+        SimpleObjectWithoutDefaultConstructor(String testField) {
+            this.testField = testField;
+        }
+
+        public String getTestField() {
+            return testField;
+        }
+
+        public void setTestField(String testField) {
+            this.testField = testField;
+        }
+    }
 }