Upgrade to JUnit 5

Closes gh-964

Author: jgrandja

buildSrc/src/main/java/org/springframework/gradle/SpringJavaPlugin.java

@@ -29,6 +29,7 @@
 import org.gradle.api.plugins.PluginManager;
 import org.gradle.api.tasks.compile.CompileOptions;
 import org.gradle.api.tasks.compile.JavaCompile;
+import org.gradle.api.tasks.testing.Test;
 import org.gradle.jvm.tasks.Jar;
 import org.jetbrains.kotlin.gradle.plugin.KotlinPluginWrapper;
 
@@ -92,5 +93,8 @@ public void apply(Project project) {
 			attributes.put("Automatic-Module-Name", project.getName().replace("-", "."));
 			manifest.attributes(attributes);
 		}));
+		project.getTasks().withType(Test.class, (test) -> {
+			test.useJUnitPlatform();
+		});
 	}
 }

dependencies/spring-authorization-server-dependencies.gradle

@@ -13,7 +13,7 @@ dependencies {
 	constraints {
 		api "com.nimbusds:nimbus-jose-jwt:9.24.4"
 		api "javax.servlet:javax.servlet-api:4.0.1"
-		api "junit:junit:4.13.2"
+		api "org.junit.jupiter:junit-jupiter:5.9.1"
 		api "org.assertj:assertj-core:3.23.1"
 		api "org.mockito:mockito-core:4.8.1"
 		api "com.squareup.okhttp3:mockwebserver:4.10.0"

oauth2-authorization-server/spring-security-oauth2-authorization-server.gradle

@@ -21,7 +21,7 @@ dependencies {
 
 	testImplementation "org.springframework.security:spring-security-test"
 	testImplementation "org.springframework:spring-webmvc"
-	testImplementation "junit:junit"
+	testImplementation "org.junit.jupiter:junit-jupiter"
 	testImplementation "org.assertj:assertj-core"
 	testImplementation "org.mockito:mockito-core"
 	testImplementation "com.jayway.jsonpath:json-path"

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/InMemoryOAuth2AuthorizationConsentServiceTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2021 the original author or authors.
+ * Copyright 2020-2022 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.
@@ -17,8 +17,8 @@
 
 import java.util.List;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 
@@ -40,7 +40,7 @@ public class InMemoryOAuth2AuthorizationConsentServiceTests {
 
 	private InMemoryOAuth2AuthorizationConsentService authorizationConsentService;
 
-	@Before
+	@BeforeEach
 	public void setUp() {
 		this.authorizationConsentService = new InMemoryOAuth2AuthorizationConsentService();
 		this.authorizationConsentService.save(AUTHORIZATION_CONSENT);

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/InMemoryOAuth2AuthorizationServiceTests.java

@@ -19,8 +19,8 @@
 import java.time.temporal.ChronoUnit;
 import java.util.List;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.security.oauth2.core.AuthorizationGrantType;
 import org.springframework.security.oauth2.core.OAuth2AccessToken;
@@ -49,7 +49,7 @@ public class InMemoryOAuth2AuthorizationServiceTests {
 	private static final OAuth2TokenType STATE_TOKEN_TYPE = new OAuth2TokenType(OAuth2ParameterNames.STATE);
 	private InMemoryOAuth2AuthorizationService authorizationService;
 
-	@Before
+	@BeforeEach
 	public void setup() {
 		this.authorizationService = new InMemoryOAuth2AuthorizationService();
 	}

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/JdbcOAuth2AuthorizationConsentServiceTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2021 the original author or authors.
+ * Copyright 2020-2022 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.
@@ -20,9 +20,9 @@
 import java.sql.Types;
 import java.util.List;
 
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.dao.DataRetrievalFailureException;
 import org.springframework.jdbc.core.ArgumentPreparedStatementSetter;
@@ -75,15 +75,15 @@ public class JdbcOAuth2AuthorizationConsentServiceTests {
 	private RegisteredClientRepository registeredClientRepository;
 	private JdbcOAuth2AuthorizationConsentService authorizationConsentService;
 
-	@Before
+	@BeforeEach
 	public void setUp() {
 		this.db = createDb();
 		this.jdbcOperations = new JdbcTemplate(this.db);
 		this.registeredClientRepository = mock(RegisteredClientRepository.class);
 		this.authorizationConsentService = new JdbcOAuth2AuthorizationConsentService(this.jdbcOperations, this.registeredClientRepository);
 	}
 
-	@After
+	@AfterEach
 	public void tearDown() {
 		this.db.shutdown();
 	}

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/JdbcOAuth2AuthorizationServiceTests.java

@@ -29,9 +29,9 @@
 import java.util.function.Function;
 
 import com.fasterxml.jackson.core.type.TypeReference;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.dao.DataRetrievalFailureException;
 import org.springframework.jdbc.core.ArgumentPreparedStatementSetter;
@@ -88,15 +88,15 @@ public class JdbcOAuth2AuthorizationServiceTests {
 	private RegisteredClientRepository registeredClientRepository;
 	private JdbcOAuth2AuthorizationService authorizationService;
 
-	@Before
+	@BeforeEach
 	public void setUp() {
 		this.db = createDb();
 		this.jdbcOperations = new JdbcTemplate(this.db);
 		this.registeredClientRepository = mock(RegisteredClientRepository.class);
 		this.authorizationService = new JdbcOAuth2AuthorizationService(this.jdbcOperations, this.registeredClientRepository);
 	}
 
-	@After
+	@AfterEach
 	public void tearDown() {
 		this.db.shutdown();
 	}

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/OAuth2AuthorizationConsentTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2021 the original author or authors.
+ * Copyright 2020-2022 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.
@@ -15,7 +15,7 @@
  */
 package org.springframework.security.oauth2.server.authorization;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/OAuth2AuthorizationServerMetadataTests.java

@@ -21,7 +21,7 @@
 import java.util.HashMap;
 import java.util.List;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.security.oauth2.core.ClientAuthenticationMethod;
 import org.springframework.security.oauth2.server.authorization.OAuth2AuthorizationServerMetadata.Builder;

oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/OAuth2AuthorizationTests.java

@@ -18,7 +18,7 @@
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.security.oauth2.core.AuthorizationGrantType;
 import org.springframework.security.oauth2.core.OAuth2AccessToken;