upgrade to junit 5

build.gradle

@@ -16,7 +16,7 @@ subprojects {
         springVersion = "5.2.8.RELEASE"
         springBootVersion = "2.3.2.RELEASE"
         jacksonVersion = "2.9.8"
-        assertJVersion = "3.11.1"
+        assertJVersion = "3.16.1"
     }
 
     repositories {
@@ -38,6 +38,12 @@ subprojects {
     javadoc {
         options.encoding = 'UTF-8'
     }
+    test {
+        useJUnitPlatform()
+        testLogging {
+            events "passed", "skipped", "failed"
+        }
+    }
 
 }
 

spring-graphql-boot-starter-webmvc/src/test/java/org/springframework/graphql/IntegrationTest.java

@@ -3,15 +3,15 @@ package org.springframework.graphql;
 import graphql.ExecutionInput;
 import graphql.ExecutionResultImpl;
 import graphql.GraphQL;
-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.ArgumentCaptor;
 import org.mockito.Mockito;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.http.ResponseEntity;
-import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
 
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -21,7 +21,7 @@ import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertThat;
 
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-@RunWith(SpringRunner.class)
+@ExtendWith(SpringExtension.class)
 public class IntegrationTest {
 
     @Autowired

spring-graphql-webmvc/build.gradle

@@ -10,7 +10,7 @@ dependencies {
     implementation group: 'javax.servlet', name: 'javax.servlet-api', version: '4.0.1'
 
     testImplementation("org.assertj:assertj-core:$assertJVersion")
-    testImplementation group: 'junit', name: 'junit', version: '4.12'
+    testImplementation('org.junit.jupiter:junit-jupiter:5.6.2')
     testImplementation "org.springframework:spring-test:$springVersion"
     testImplementation group: 'com.jayway.jsonpath', name: 'json-path', version: '2.4.0'
     testImplementation "org.mockito:mockito-core:2.+"