DATAREDIS-1189 - Consistently translate Lettuce connection exceptions.

We now translate consistently connection/pooling exceptions in LettuceConnectionFactory by wrapping LettuceConnectionProvider with a variant that considers exception translation.

src/test/java/org/springframework/data/redis/connection/lettuce/LettuceConnectionFactoryTests.java

@@ -473,7 +473,8 @@ public class LettuceConnectionFactoryTests {
 		RedisConnection connection = factory.getConnection();
 
 		assertThatThrownBy(() -> connection.pSubscribe((message, pattern) -> {
-		}, "foo".getBytes())).isInstanceOf(RedisSystemException.class).hasCauseInstanceOf(UnsupportedOperationException.class);
+		}, "foo".getBytes())).isInstanceOf(RedisConnectionFailureException.class)
+				.hasCauseInstanceOf(UnsupportedOperationException.class);
 
 		connection.close();
 		factory.destroy();

src/test/java/org/springframework/data/redis/connection/lettuce/LettuceConnectionFactoryUnitTests.java

@@ -49,6 +49,8 @@ import org.mockito.ArgumentMatchers;
 import org.springframework.beans.DirectFieldAccessor;
 import org.springframework.beans.factory.DisposableBean;
 import org.springframework.data.redis.ConnectionFactoryTracker;
+import org.springframework.data.redis.RedisConnectionFailureException;
+import org.springframework.data.redis.connection.PoolException;
 import org.springframework.data.redis.connection.RedisClusterConfiguration;
 import org.springframework.data.redis.connection.RedisClusterConnection;
 import org.springframework.data.redis.connection.RedisConfiguration;
@@ -861,6 +863,27 @@ public class LettuceConnectionFactoryUnitTests {
 		verify(connectionProviderMock, times(2)).getConnection(StatefulConnection.class);
 	}
 
+	@Test // DATAREDIS-1189
+	public void shouldTranslateConnectionException() {
+
+		LettuceConnectionProvider connectionProviderMock = mock(LettuceConnectionProvider.class);
+
+		when(connectionProviderMock.getConnection(any())).thenThrow(new PoolException("error!"));
+
+		LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory() {
+			@Override
+			protected LettuceConnectionProvider doCreateConnectionProvider(AbstractRedisClient client,
+					RedisCodec<?, ?> codec) {
+				return connectionProviderMock;
+			}
+		};
+		connectionFactory.setClientResources(LettuceTestClientResources.getSharedClientResources());
+		connectionFactory.afterPropertiesSet();
+
+		assertThatExceptionOfType(RedisConnectionFailureException.class)
+				.isThrownBy(() -> connectionFactory.getConnection().ping()).withCauseInstanceOf(PoolException.class);
+	}
+
 	@Test // DATAREDIS-1027
 	public void shouldDisposeConnectionProviders() throws Exception {