Support reactive infrastructure with DataRedisTest

Previously DataRedisTest-annotated test could not use reactive
operations as RedisReactiveAutoConfiguration is not considered. This
commit includes this auto-configuration and adds a test to exercise this
scenario.

Closes gh-26319

spring-boot-project/spring-boot-test-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -59,6 +59,7 @@ org.springframework.boot.autoconfigure.transaction.TransactionAutoConfiguration
 # AutoConfigureDataRedis auto-configuration imports
 org.springframework.boot.test.autoconfigure.data.redis.AutoConfigureDataRedis=\
 org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration,\
+org.springframework.boot.autoconfigure.data.redis.RedisReactiveAutoConfiguration,\
 org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration
 
 # AutoConfigureJdbc auto-configuration imports

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/data/redis/DataRedisTestReactiveIntegrationTests.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.data.redis;
+
+import java.util.UUID;
+
+import org.junit.jupiter.api.Test;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import reactor.test.StepVerifier;
+
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.testsupport.testcontainers.RedisContainer;
+import org.springframework.context.ApplicationContext;
+import org.springframework.data.redis.core.ReactiveRedisOperations;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+
+/**
+ * Integration test for {@link DataRedisTest @DataRedisTest} using reactive operations.
+ *
+ * @author Stephane Nicoll
+ */
+@Testcontainers(disabledWithoutDocker = true)
+@DataRedisTest
+class DataRedisTestReactiveIntegrationTests {
+
+	@Container
+	static RedisContainer redis = new RedisContainer();
+
+	@Autowired
+	private ReactiveRedisOperations<Object, Object> operations;
+
+	@Autowired
+	private ApplicationContext applicationContext;
+
+	@DynamicPropertySource
+	static void redisProperties(DynamicPropertyRegistry registry) {
+		registry.add("spring.redis.host", redis::getHost);
+		registry.add("spring.redis.port", redis::getFirstMappedPort);
+	}
+
+	@Test
+	void testRepository() {
+		String id = UUID.randomUUID().toString();
+		StepVerifier.create(this.operations.opsForValue().set(id, "Hello World")).expectNext(Boolean.TRUE)
+				.verifyComplete();
+		StepVerifier.create(this.operations.opsForValue().get(id)).expectNext("Hello World").verifyComplete();
+		StepVerifier.create(this.operations.execute((action) -> action.serverCommands().flushDb())).expectNext("OK")
+				.verifyComplete();
+	}
+
+	@Test
+	void didNotInjectExampleService() {
+		assertThatExceptionOfType(NoSuchBeanDefinitionException.class)
+				.isThrownBy(() -> this.applicationContext.getBean(ExampleService.class));
+	}
+
+}