Increase JUnit5 usage (#1020)

spring-cloud-commons/src/test/java/org/springframework/cloud/client/discovery/EnableDiscoveryClientImportSelectorTests.java

@@ -16,8 +16,8 @@
 
 package org.springframework.cloud.client.discovery;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -43,7 +43,7 @@ public class EnableDiscoveryClientImportSelectorTests {
 	@Mock
 	private AnnotationAttributes annotationAttributes;
 
-	@Before
+	@BeforeEach
 	public void setup() {
 		MockitoAnnotations.initMocks(this);
 		this.importSelector.setBeanClassLoader(getClass().getClassLoader());

spring-cloud-commons/src/test/java/org/springframework/cloud/client/hypermedia/DiscoveredResourceUnitTests.java

@@ -16,11 +16,11 @@
 
 package org.springframework.cloud.client.hypermedia;
 
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
+import org.mockito.junit.jupiter.MockitoExtension;
 
 import org.springframework.cloud.client.DefaultServiceInstance;
 import org.springframework.hateoas.Link;
@@ -32,6 +32,7 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.lenient;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -40,7 +41,7 @@
  * @author Oliver Gierke
  * @author Tim Ysewyn
  */
-@RunWith(MockitoJUnitRunner.class)
+@ExtendWith(MockitoExtension.class)
 public class DiscoveredResourceUnitTests {
 
 	@Mock
@@ -57,9 +58,9 @@ public class DiscoveredResourceUnitTests {
 
 	DiscoveredResource resource;
 
-	@Before
+	@BeforeEach
 	public void setUp() {
-		when(this.traversal.buildTraversal(any(Traverson.class))).thenReturn(this.builder);
+		lenient().when(this.traversal.buildTraversal(any(Traverson.class))).thenReturn(this.builder);
 
 		this.resource = new DiscoveredResource(this.provider, this.traversal);
 		this.resource.setRestOperations(this.operations);

spring-cloud-commons/src/test/java/org/springframework/cloud/client/hypermedia/DynamicServiceInstanceProviderUnitTests.java

@@ -18,10 +18,10 @@
 
 import java.util.Arrays;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
+import org.mockito.junit.jupiter.MockitoExtension;
 
 import org.springframework.cloud.client.ServiceInstance;
 import org.springframework.cloud.client.discovery.DiscoveryClient;
@@ -34,7 +34,7 @@
 /**
  * @author Oliver Gierke
  */
-@RunWith(MockitoJUnitRunner.class)
+@ExtendWith(MockitoExtension.class)
 public class DynamicServiceInstanceProviderUnitTests {
 
 	@Mock

spring-cloud-commons/src/test/java/org/springframework/cloud/client/serviceregistry/AutoServiceRegistrationAutoConfigurationTests.java

@@ -20,10 +20,7 @@
 import java.util.Arrays;
 import java.util.Map;
 
-import org.hamcrest.Matchers;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.ExpectedException;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.BeanCreationException;
 import org.springframework.boot.test.util.TestPropertyValues;
@@ -32,16 +29,14 @@
 import org.springframework.context.annotation.Configuration;
 import org.springframework.util.StringUtils;
 
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.assertj.core.api.BDDAssertions.then;
 
 /**
  * @author Spencer Gibb
  */
 public class AutoServiceRegistrationAutoConfigurationTests {
 
-	@Rule
-	public ExpectedException exception = ExpectedException.none();
-
 	@Test
 	public void hasAutoServiceRegistration() {
 		try (AnnotationConfigApplicationContext context = setup(HasAutoServiceRegistrationConfiguration.class)) {
@@ -52,12 +47,12 @@ public void hasAutoServiceRegistration() {
 
 	@Test
 	public void noAutoServiceRegistrationAndFailFast() {
-		this.exception.expect(BeanCreationException.class);
-		this.exception.expectMessage(Matchers.containsString("no AutoServiceRegistration"));
-		try (AnnotationConfigApplicationContext context = setup(
-				"spring.cloud.service-registry.auto-registration.failFast=true")) {
-			assertNoBean(context);
-		}
+		assertThatThrownBy(() -> {
+			try (AnnotationConfigApplicationContext context = setup(
+					"spring.cloud.service-registry.auto-registration.failFast=true")) {
+				assertNoBean(context);
+			}
+		}).isInstanceOf(BeanCreationException.class).hasMessageContaining("no AutoServiceRegistration");
 	}
 
 	@Test

spring-cloud-loadbalancer/src/test/java/org/springframework/cloud/loadbalancer/core/CachingServiceInstanceListSupplierTests.java

@@ -17,7 +17,6 @@
 package org.springframework.cloud.loadbalancer.core;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.ExtendWith;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
@@ -36,7 +35,6 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
-import org.springframework.test.context.junit.jupiter.SpringExtension;
 import org.springframework.web.reactive.function.client.WebClient;
 
 import static java.time.Duration.ofMillis;
@@ -49,7 +47,6 @@
  * @author Olga Maciaszek-Sharma
  */
 @SpringBootTest(classes = CachingServiceInstanceListSupplierTests.TestConfig.class)
-@ExtendWith(SpringExtension.class)
 class CachingServiceInstanceListSupplierTests {
 
 	public static final String SERVICE_ID = "test";

spring-cloud-loadbalancer/src/test/java/org/springframework/cloud/loadbalancer/core/HealthCheckServiceInstanceListSupplierTests.java

@@ -29,7 +29,6 @@
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.Mockito;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
@@ -44,7 +43,6 @@
 import org.springframework.cloud.client.loadbalancer.LoadBalancerProperties;
 import org.springframework.cloud.loadbalancer.support.ServiceInstanceListSuppliers;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.test.context.junit.jupiter.SpringExtension;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
@@ -67,7 +65,6 @@
  * @author Roman Chigvintsev
  * @author Sabyasachi Bhattacharya
  */
-@ExtendWith(SpringExtension.class)
 @SpringBootTest(classes = HealthCheckServiceInstanceListSupplierTests.TestApplication.class,
 		webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 class HealthCheckServiceInstanceListSupplierTests {

spring-cloud-loadbalancer/src/test/java/org/springframework/cloud/loadbalancer/core/ServiceInstanceListSupplierBuilderTests.java

@@ -16,7 +16,7 @@
 
 package org.springframework.cloud.loadbalancer.core;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.cloud.client.discovery.ReactiveDiscoveryClient;
@@ -27,7 +27,7 @@
 import org.springframework.web.reactive.function.client.WebClient;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.Assert.fail;
+import static org.junit.jupiter.api.Assertions.fail;
 import static org.mockito.Mockito.mock;
 
 public class ServiceInstanceListSupplierBuilderTests {