Got the simple Redis connectivity test case working. Using @DataRedisTest so spring.data.redis.host/port as my keys for props that I inject w/ @DynamicPropertySource, not spring.redis.host/port (this was in my application-test.yml file and it was causing problems). For now the test spins up its own Redis container, should probably modularize later as the project progresses.

Author: timan-z

springqpro-backend/src/main/java/com/springqprobackend/springqpro/config/RedisConfig.java

@@ -14,8 +14,8 @@
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 
 // 2025-11-21-REDIS-PHASE-NOTE: THIS FILE CREATES CONNECTION FACTORY AND REDIS TEMPLATE W/ JACKSON SERIALIZER:
-@Configuration
 @Profile("!test")
+@Configuration
 public class RedisConfig {
     @Bean
     public LettuceConnectionFactory redisConnectionFactory(

springqpro-backend/src/test/java/com/springqprobackend/springqpro/integration/RedisPingIntegrationTest.java

@@ -1,46 +1,44 @@
 package com.springqprobackend.springqpro.integration;
 
-import org.junit.jupiter.api.BeforeAll;
+import com.springqprobackend.springqpro.config.RedisTestConfig;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.data.redis.DataRedisTest;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.test.context.TestConfiguration;
 import org.springframework.context.annotation.Import;
-import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.RedisCallback;
 import org.springframework.data.redis.core.StringRedisTemplate;
-import org.springframework.test.context.ActiveProfiles;
-import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
 import org.testcontainers.containers.GenericContainer;
 import org.testcontainers.junit.jupiter.Container;
 import org.testcontainers.junit.jupiter.Testcontainers;
 
-import com.springqprobackend.springqpro.config.RedisConfig;
-import org.testcontainers.utility.DockerImageName;
-
+//@ContextConfiguration(classes = { RedisPingIntegrationTest.Config.class })
+//@Import(RedisTestConfig.class)
 @DataRedisTest
 @Testcontainers
-@ContextConfiguration(classes = { RedisPingIntegrationTest.Config.class })
+@ExtendWith(SpringExtension.class)
 class RedisPingIntegrationTest {
+    // Testcontainers Redis:
+    @Container
+    static final GenericContainer<?> REDIS =
+            new GenericContainer<>("redis:7.2")
+                    .withExposedPorts(6379);
 
-    @TestConfiguration
-    @Import(com.springqprobackend.springqpro.config.RedisConfig.class)
-    static class Config {
-        static GenericContainer<?> REDIS =
-                new GenericContainer<>(DockerImageName.parse("redis:7.2"))
-                        .withExposedPorts(6379);
-        static {
-            REDIS.start();
-            System.setProperty("spring.data.redis.host", REDIS.getHost());
-            System.setProperty("spring.data.redis.port", REDIS.getMappedPort(6379).toString());
-        }
+    // Register dynamic Spring properties BEFORE context starts
+    @DynamicPropertySource
+    static void configureRedis(DynamicPropertyRegistry registry) {
+        registry.add("spring.data.redis.host", () -> REDIS.getHost());
+        registry.add("spring.data.redis.port", () -> REDIS.getMappedPort(6379));
     }
 
     @Autowired
     private StringRedisTemplate stringRedisTemplate;
-
     @Test
     void testPing() {
-        System.out.println("What's poppin!");
+        String result = stringRedisTemplate.execute((RedisCallback<String>) (conn) -> conn.ping());
+        assert result.equalsIgnoreCase("PONG");
     }
 }

springqpro-backend/src/test/resources/application-test.yml

@@ -1,8 +1,3 @@
 spring:
-  redis:
-    host: localhost
-    port: 6379
-    password:
-    timeout: 2000
   main:
     allow-bean-definition-overriding: true