Add tests for TestRestTemplate in reactive env

Closes gh-8543

spring-boot-test/src/test/java/org/springframework/boot/test/context/AbstractSpringBootTestEmbeddedReactiveWebEnvironmentTests.java

@@ -21,6 +21,7 @@ import reactor.core.publisher.Mono;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.boot.web.embedded.tomcat.TomcatReactiveWebServerFactory;
 import org.springframework.boot.web.reactive.context.ReactiveWebApplicationContext;
 import org.springframework.boot.web.reactive.server.ReactiveWebServerFactory;
@@ -55,6 +56,9 @@ public abstract class AbstractSpringBootTestEmbeddedReactiveWebEnvironmentTests
 	@Autowired
 	private WebTestClient webClient;
 
+	@Autowired
+	private TestRestTemplate restTemplate;
+
 	public ReactiveWebApplicationContext getContext() {
 		return this.context;
 	}
@@ -73,6 +77,12 @@ public abstract class AbstractSpringBootTestEmbeddedReactiveWebEnvironmentTests
 				.isEqualTo("Hello World");
 	}
 
+	@Test
+	public void injectTestRestTemplate() {
+		String body = this.restTemplate.getForObject("/", String.class);
+		assertThat(body).isEqualTo("Hello World");
+	}
+
 	@Test
 	public void annotationAttributesOverridePropertiesFile() throws Exception {
 		assertThat(this.value).isEqualTo(123);

spring-boot-test/src/test/java/org/springframework/boot/test/context/SpringBootTestReactiveWebEnvironmentUserDefinedTestRestTemplateTests.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2012-2017 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
+ *
+ *      http://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.context;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.reactive.config.EnableWebFlux;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link SpringBootTest} in a reactive environment configured with
+ * a user-defined {@link TestRestTemplate}.
+ *
+ * @author Madhura Bhave
+ */
+@RunWith(SpringRunner.class)
+@DirtiesContext
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
+		properties = { "spring.main.web-application-type=reactive", "value=123" })
+public class SpringBootTestReactiveWebEnvironmentUserDefinedTestRestTemplateTests
+		extends AbstractSpringBootTestEmbeddedReactiveWebEnvironmentTests {
+
+	@Test
+	public void restTemplateIsUserDefined() throws Exception {
+		assertThat(getContext().getBean("testRestTemplate"))
+				.isInstanceOf(RestTemplate.class);
+	}
+
+	@Configuration
+	@EnableWebFlux
+	@RestController
+	protected static class Config extends AbstractConfig {
+
+		@Bean
+		public RestTemplate testRestTemplate() {
+			return new RestTemplate();
+		}
+
+	}
+
+}