Move Spring Data REST Starbucks example to Testcontainers.

Author: odrotbohm

rest/starbucks/pom.xml

@@ -93,6 +93,19 @@
 			<artifactId>webjars-locator-core</artifactId>
 			<scope>runtime</scope>
 		</dependency>
+		
+		<!-- Testcontainers -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-testcontainers</artifactId>
+			<scope>test</scope>
+		</dependency>
+		
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>mongodb</artifactId>
+			<scope>test</scope>
+		</dependency>
 
 	</dependencies>
 

rest/starbucks/src/test/java/example/springdata/rest/stores/StarbucksClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 the original author or authors.
+ * Copyright 2014-2024 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.
@@ -26,43 +26,30 @@
 
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.boot.test.web.server.LocalServerPort;
-import org.springframework.context.annotation.Bean;
 import org.springframework.hateoas.EntityModel;
 import org.springframework.hateoas.MediaTypes;
 import org.springframework.hateoas.client.Traverson;
 import org.springframework.hateoas.server.core.TypeReferences.CollectionModelType;
 import org.springframework.hateoas.server.core.TypeReferences.EntityModelType;
 import org.springframework.hateoas.server.core.TypeReferences.PagedModelType;
-import org.springframework.http.RequestEntity;
-import org.springframework.web.client.RestOperations;
-import org.springframework.web.client.RestTemplate;
+import org.springframework.web.client.RestClient;
 
 /**
  * A test case to discover the search resource and execute a predefined search with it.
  *
  * @author Oliver Gierke
  * @author Divya Srivastava
  */
-@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
 @Slf4j
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
 class StarbucksClient {
 
-	@SpringBootApplication
-	static class Config {
-
-		@Bean
-		public RestTemplate restTemplate() {
-			return new RestTemplate();
-		}
-	}
-
 	@LocalServerPort int port;
-
-	@Autowired RestOperations restOperations;
+	@Autowired TestRestTemplate template;
 
 	private static final String SERVICE_URI = "http://localhost:%s/api";
 
@@ -102,17 +89,23 @@ void accessServiceUsingRestTemplate() {
 
 		// Access root resource
 
-		var uri = URI.create(String.format(SERVICE_URI, port));
-		var request = RequestEntity.get(uri).accept(HAL_JSON).build();
-		var rootLinks = restOperations.exchange(request, new EntityModelType<>() {}).getBody();
-		var links = rootLinks.getLinks();
+		var client = RestClient.create(template.getRestTemplate());
+
+		var links = client.get()
+				.uri(URI.create(String.format(SERVICE_URI, port)))
+				.accept(HAL_JSON)
+				.retrieve()
+				.body(new EntityModelType<>() {})
+				.getLinks();
 
 		// Follow stores link
 
 		var storesLink = links.getRequiredLink("stores").expand();
 
-		request = RequestEntity.get(URI.create(storesLink.getHref())).accept(HAL_JSON).build();
-		var stores = restOperations.exchange(request, new CollectionModelType<Store>() {}).getBody();
+		var stores = client.get().uri(storesLink.toUri())
+				.accept(HAL_JSON)
+				.retrieve()
+				.body(new CollectionModelType<Store>() {});
 
 		stores.getContent().forEach(store -> log.info("{} - {}", store.name, store.address));
 	}

rest/starbucks/src/test/java/example/springdata/rest/stores/StoreRepositoryIntegrationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 the original author or authors.
+ * Copyright 2014-2024 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.
@@ -24,7 +24,6 @@
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.domain.PageRequest;
@@ -38,8 +37,8 @@
  * @author Oliver Gierke
  * @author Mark Paluch
  */
-@SpringBootTest(classes = Application.class)
-public class StoreRepositoryIntegrationTests {
+@SpringBootTest(classes = { Application.class, TestApplication.class })
+class StoreRepositoryIntegrationTests {
 
 	@Autowired StoreRepository repository;
 
@@ -50,7 +49,7 @@ public void clearDb() {
 	}
 
 	@Test
-	public void findsStoresByLocation() {
+	void findsStoresByLocation() {
 
 		var location = new Point(-73.995146, 40.740337);
 		var store = new Store(UUID.randomUUID(), "Foo", new Address("street", "city", "zip", location));

rest/starbucks/src/test/java/example/springdata/rest/stores/TestApplication.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2024 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 example.springdata.rest.stores;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.testcontainers.containers.MongoDBContainer;
+import org.testcontainers.utility.DockerImageName;
+
+/**
+ * @author Oliver Drotbohm
+ */
+@Configuration
+public class TestApplication {
+
+	@Bean
+	@ServiceConnection
+	MongoDBContainer mongoDBContainer() {
+		return new MongoDBContainer(DockerImageName.parse("mongodb/mongodb-community-server"));
+	}
+
+	public static void main(String[] args) {
+
+		SpringApplication.from(Application::main)
+				.with(TestApplication.class)
+				.run(args);
+	}
+}