[BAEL-3079]: Embedded Redis Server Article (#7368)

spring-boot-testing/pom.xml

@@ -15,6 +15,10 @@
     </parent>
 
     <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
@@ -33,6 +37,13 @@
             <scope>test</scope>
         </dependency>
 
+        <!-- Embedded Redis Server -->
+        <dependency>
+            <groupId>it.ozimov</groupId>
+            <artifactId>embedded-redis</artifactId>
+            <version>0.7.2</version>
+            <scope>test</scope>
+        </dependency>
         <!-- Spock & Spring -->
         <dependency>
             <groupId>org.spockframework</groupId>

spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisConfiguration.java

@@ -0,0 +1,24 @@
+package com.baeldung.boot.embeddedRedis.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
+
+@Configuration
+@EnableRedisRepositories
+public class RedisConfiguration {
+
+    @Bean
+    public LettuceConnectionFactory redisConnectionFactory(final RedisProperties redisProperties) {
+        return new LettuceConnectionFactory(redisProperties.getRedisHost(), redisProperties.getRedisPort());
+    }
+
+    @Bean
+    public RedisTemplate<?, ?> redisTemplate(final LettuceConnectionFactory connectionFactory) {
+        RedisTemplate<byte[], byte[]> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+        return template;
+    }
+}

spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisProperties.java

@@ -0,0 +1,23 @@
+package com.baeldung.boot.embeddedRedis.configuration;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RedisProperties {
+    private final int redisPort;
+    private final String redisHost;
+
+    public RedisProperties(@Value("${spring.redis.port}") final int redisPort, @Value("${spring.redis.host}") final String redisHost) {
+        this.redisPort = redisPort;
+        this.redisHost = redisHost;
+    }
+
+    public int getRedisPort() {
+        return redisPort;
+    }
+
+    public String getRedisHost() {
+        return redisHost;
+    }
+}

spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/User.java

@@ -0,0 +1,25 @@
+package com.baeldung.boot.embeddedRedis.domain;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.redis.core.RedisHash;
+
+import java.util.UUID;
+
+@RedisHash("user")
+public class User {
+    @Id private UUID id;
+    private String name;
+
+    public User(UUID id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public UUID getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+}

spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepository.java

@@ -0,0 +1,10 @@
+package com.baeldung.boot.embeddedRedis.domain.repository;
+
+import com.baeldung.boot.embeddedRedis.domain.User;
+import org.springframework.data.repository.CrudRepository;
+
+import java.util.UUID;
+
+public interface UserRepository extends CrudRepository<User, UUID> {
+
+}

spring-boot-testing/src/main/resources/application.properties

@@ -1,3 +1,6 @@
+# embedded redis
+spring.redis.host= localhost
+spring.redis.port= 6379
 
 # security
 spring.security.user.name=john

spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/TestRedisConfiguration.java

@@ -0,0 +1,28 @@
+package com.baeldung.boot.embeddedRedis;
+
+import com.baeldung.boot.embeddedRedis.configuration.RedisProperties;
+import org.springframework.boot.test.context.TestConfiguration;
+import redis.embedded.RedisServer;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+
+@TestConfiguration
+public class TestRedisConfiguration {
+
+    private final RedisServer redisServer;
+
+    public TestRedisConfiguration(final RedisProperties redisProperties) {
+        this.redisServer = new RedisServer(redisProperties.getRedisPort());
+    }
+
+    @PostConstruct
+    public void postConstruct() {
+        redisServer.start();
+    }
+
+    @PreDestroy
+    public void preDestroy() {
+        redisServer.stop();
+    }
+}

spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepositoryIntegrationTest.java

@@ -0,0 +1,31 @@
+package com.baeldung.boot.embeddedRedis.domain.repository;
+
+import com.baeldung.boot.embeddedRedis.TestRedisConfiguration;
+import com.baeldung.boot.embeddedRedis.domain.User;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.UUID;
+
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = TestRedisConfiguration.class)
+public class UserRepositoryIntegrationTest {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Test
+    public void shouldSaveUser_toRedis() {
+        final UUID id = UUID.randomUUID();
+        final User user = new User(id, "name");
+
+        final User saved = userRepository.save(user);
+
+        assertNotNull(saved);
+    }
+}

spring-boot-testing/src/test/resources/application.properties

@@ -1,3 +1,6 @@
+#embedded redis
+spring.redis.host= localhost
+spring.redis.port= 6370
 # security
 spring.security.user.name=john
 spring.security.user.password=123