Polishing.

Prepare pool for Jedis as well. Introduce generics for Add ticket references to tests.

Fix generics for GenericObjectPoolConfig using Lettuce.

See #3072

src/main/java/org/springframework/data/redis/connection/jedis/JedisConnectionFactory.java

@@ -730,6 +730,12 @@ public void start() {
 
 			if (getUsePool() && !isRedisClusterAware()) {
 				this.pool = createPool();
+
+				try {
+					this.pool.preparePool();
+				} catch (Exception ex) {
+					throw new PoolException("Could not prepare the pool", ex);
+				}
 			}
 
 			if (isRedisClusterAware()) {

src/main/java/org/springframework/data/redis/connection/lettuce/DefaultLettucePoolingClientConfiguration.java

@@ -18,6 +18,7 @@
 import io.lettuce.core.ClientOptions;
 import io.lettuce.core.ReadFrom;
 import io.lettuce.core.SslVerifyMode;
+import io.lettuce.core.api.StatefulConnection;
 import io.lettuce.core.resource.ClientResources;
 
 import java.time.Duration;
@@ -37,10 +38,10 @@
 class DefaultLettucePoolingClientConfiguration implements LettucePoolingClientConfiguration {
 
 	private final LettuceClientConfiguration clientConfiguration;
-	private final GenericObjectPoolConfig poolConfig;
+	private final GenericObjectPoolConfig<StatefulConnection<?, ?>> poolConfig;
 
 	DefaultLettucePoolingClientConfiguration(LettuceClientConfiguration clientConfiguration,
-			GenericObjectPoolConfig poolConfig) {
+			GenericObjectPoolConfig<StatefulConnection<?, ?>> poolConfig) {
 
 		this.clientConfiguration = clientConfiguration;
 		this.poolConfig = poolConfig;
@@ -108,7 +109,7 @@ public Duration getShutdownQuietPeriod() {
 	}
 
 	@Override
-	public GenericObjectPoolConfig getPoolConfig() {
+	public GenericObjectPoolConfig<StatefulConnection<?, ?>> getPoolConfig() {
 		return poolConfig;
 	}
 }

src/main/java/org/springframework/data/redis/connection/lettuce/LettucePoolingClientConfiguration.java

@@ -17,6 +17,7 @@
 
 import io.lettuce.core.ClientOptions;
 import io.lettuce.core.ReadFrom;
+import io.lettuce.core.api.StatefulConnection;
 import io.lettuce.core.resource.ClientResources;
 
 import java.time.Duration;
@@ -39,7 +40,7 @@ public interface LettucePoolingClientConfiguration extends LettuceClientConfigur
 	/**
 	 * @return the {@link GenericObjectPoolConfig}. Never {@literal null}.
 	 */
-	GenericObjectPoolConfig getPoolConfig();
+	GenericObjectPoolConfig<StatefulConnection<?, ?>> getPoolConfig();
 
 	/**
 	 * Creates a new {@link LettucePoolingClientConfigurationBuilder} to build {@link LettucePoolingClientConfiguration}
@@ -91,7 +92,7 @@ static LettucePoolingClientConfiguration defaultConfiguration() {
 	 */
 	class LettucePoolingClientConfigurationBuilder extends LettuceClientConfigurationBuilder {
 
-		GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
+		GenericObjectPoolConfig<StatefulConnection<?, ?>> poolConfig = new GenericObjectPoolConfig<>();
 
 		LettucePoolingClientConfigurationBuilder() {
 			super();
@@ -163,7 +164,8 @@ public LettucePoolingClientConfigurationBuilder clientName(String clientName) {
 		 *
 		 * @param poolConfig must not be {@literal null}.
 		 */
-		public LettucePoolingClientConfigurationBuilder poolConfig(GenericObjectPoolConfig poolConfig) {
+		public LettucePoolingClientConfigurationBuilder poolConfig(
+				GenericObjectPoolConfig<StatefulConnection<?, ?>> poolConfig) {
 
 			Assert.notNull(poolConfig, "PoolConfig must not be null");
 

src/main/java/org/springframework/data/redis/connection/lettuce/LettucePoolingConnectionProvider.java

@@ -64,7 +64,7 @@ class LettucePoolingConnectionProvider implements LettuceConnectionProvider, Red
 	private static final Log log = LogFactory.getLog(LettucePoolingConnectionProvider.class);
 
 	private final LettuceConnectionProvider connectionProvider;
-	private final GenericObjectPoolConfig poolConfig;
+	private final GenericObjectPoolConfig<StatefulConnection<?, ?>> poolConfig;
 	private final Map<StatefulConnection<?, ?>, GenericObjectPool<StatefulConnection<?, ?>>> poolRef = new ConcurrentHashMap<>(
 			32);
 
@@ -97,7 +97,6 @@ class LettucePoolingConnectionProvider implements LettuceConnectionProvider, Red
 
 			try {
 				newPool.preparePool();
-
 			} catch (Exception ex) {
 				throw new PoolException("Could not prepare the pool", ex);
 			}

src/test/java/org/springframework/data/redis/connection/jedis/JedisConnectionFactoryUnitTests.java

@@ -19,10 +19,12 @@
 import static org.mockito.Mockito.*;
 
 import redis.clients.jedis.DefaultJedisClientConfig;
+import redis.clients.jedis.Jedis;
 import redis.clients.jedis.JedisClientConfig;
 import redis.clients.jedis.JedisCluster;
 import redis.clients.jedis.JedisPoolConfig;
 import redis.clients.jedis.RedisProtocol;
+import redis.clients.jedis.util.Pool;
 
 import java.io.IOException;
 import java.security.NoSuchAlgorithmException;
@@ -265,6 +267,28 @@ void shouldApplyClientConfiguration() throws NoSuchAlgorithmException {
 		assertThat(connectionFactory.getPoolConfig()).isSameAs(poolConfig);
 	}
 
+	@Test // GH-3072
+	void shouldInitializePool() throws Exception {
+
+		JedisPoolConfig poolConfig = new JedisPoolConfig();
+		Pool<Jedis> poolMock = mock(Pool.class);
+
+		JedisClientConfiguration configuration = JedisClientConfiguration.builder() //
+				.usePooling().poolConfig(poolConfig) //
+				.build();
+
+		connectionFactory = new JedisConnectionFactory(new RedisStandaloneConfiguration(), configuration) {
+			@Override
+			protected Pool<Jedis> createRedisPool() {
+				return poolMock;
+			}
+		};
+
+		connectionFactory.afterPropertiesSet();
+
+		verify(poolMock).preparePool();
+	}
+
 	@Test // DATAREDIS-574
 	void shouldReturnStandaloneConfiguration() {
 
@@ -382,12 +406,12 @@ void earlyStartupDoesNotStartConnectionFactory() {
 	private JedisConnectionFactory initSpyedConnectionFactory(RedisSentinelConfiguration sentinelConfiguration,
 			@Nullable JedisPoolConfig poolConfig) {
 
+		Pool<Jedis> poolMock = mock(Pool.class);
 		// we have to use a spy here as jedis would start connecting to redis sentinels when the pool is created.
 		JedisConnectionFactory connectionFactorySpy = spy(new JedisConnectionFactory(sentinelConfiguration, poolConfig));
 
-		doReturn(null).when(connectionFactorySpy).createRedisSentinelPool(any(RedisSentinelConfiguration.class));
-
-		doReturn(null).when(connectionFactorySpy).createRedisPool();
+		doReturn(poolMock).when(connectionFactorySpy).createRedisSentinelPool(any(RedisSentinelConfiguration.class));
+		doReturn(poolMock).when(connectionFactorySpy).createRedisPool();
 
 		return connectionFactorySpy;
 	}

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

@@ -17,6 +17,7 @@
 
 import static org.mockito.Mockito.*;
 
+import io.lettuce.core.api.StatefulConnection;
 import io.lettuce.core.api.StatefulRedisConnection;
 import io.lettuce.core.api.async.RedisAsyncCommands;
 
@@ -74,10 +75,10 @@ void shouldDiscardTransactionOnReleaseOnActiveTransaction() {
 		verify(commandsMock).discard();
 	}
 
-	@Test
+	@Test // GH-3072
 	void shouldPrepareThePool() {
 
-		GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
+		GenericObjectPoolConfig<StatefulConnection<?, ?>> poolConfig = new GenericObjectPoolConfig<>();
 		poolConfig.setMinIdle(5);
 		poolConfig.setMaxIdle(8);
 		poolConfig.setMaxTotal(10);