Move back to JUnit 4 until SUREFIRE-1614 has been resolved

See gh-14736
See gh-14737
See gh-14738

spring-boot-samples/spring-boot-sample-data-jpa/src/test/java/sample/data/jpa/SampleDataJpaApplicationTests.java

@@ -20,12 +20,14 @@ import java.lang.management.ManagementFactory;
 
 import javax.management.ObjectName;
 
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
+import org.junit.Before;
+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.ActiveProfiles;
+import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 import org.springframework.web.context.WebApplicationContext;
@@ -41,7 +43,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
  * @author Oliver Gierke
  * @author Dave Syer
  */
-
+@RunWith(SpringRunner.class)
 // Enable JMX so we can test the MBeans (you can't do this in a properties file)
 @SpringBootTest(properties = { "spring.jmx.enabled:true",
 		"spring.datasource.jmx-enabled:true" })
@@ -54,7 +56,7 @@ public class SampleDataJpaApplicationTests {
 
 	private MockMvc mvc;
 
-	@BeforeEach
+	@Before
 	public void setUp() {
 		this.mvc = MockMvcBuilders.webAppContextSetup(this.context).build();
 	}

spring-boot-samples/spring-boot-sample-data-jpa/src/test/java/sample/data/jpa/service/CityRepositoryIntegrationTests.java

@@ -15,13 +15,15 @@
  */
 package sample.data.jpa.service;
 
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
+import org.junit.runner.RunWith;
 import sample.data.jpa.domain.City;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
+import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -30,7 +32,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Oliver Gierke
  */
-
+@RunWith(SpringRunner.class)
 @SpringBootTest
 public class CityRepositoryIntegrationTests {
 

spring-boot-samples/spring-boot-sample-data-jpa/src/test/java/sample/data/jpa/service/HotelRepositoryIntegrationTests.java

@@ -17,7 +17,8 @@ package sample.data.jpa.service;
 
 import java.util.List;
 
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
+import org.junit.runner.RunWith;
 import sample.data.jpa.domain.City;
 import sample.data.jpa.domain.Hotel;
 import sample.data.jpa.domain.HotelSummary;
@@ -29,6 +30,7 @@ import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Sort.Direction;
+import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -37,7 +39,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Oliver Gierke
  */
-
+@RunWith(SpringRunner.class)
 @SpringBootTest
 public class HotelRepositoryIntegrationTests {