Polish

buildSrc/src/main/java/org/springframework/boot/build/bom/BomExtension.java

@@ -341,7 +341,7 @@ public class BomExtension {
 
 		private String repository = "spring-boot";
 
-		private List<String> issueLabels;
+		private final List<String> issueLabels;
 
 		private GitHub(String organization, String repository, List<String> issueLabels) {
 			this.organization = organization;

buildSrc/src/main/java/org/springframework/boot/build/bom/UpgradePolicy.java

@@ -47,7 +47,7 @@ public enum UpgradePolicy implements BiPredicate<DependencyVersion, DependencyVe
 	 */
 	SAME_MINOR_VERSION(DependencyVersion::isSameMinorAndNewerThan);
 
-	private BiPredicate<DependencyVersion, DependencyVersion> delegate;
+	private final BiPredicate<DependencyVersion, DependencyVersion> delegate;
 
 	UpgradePolicy(BiPredicate<DependencyVersion, DependencyVersion> delegate) {
 		this.delegate = delegate;

buildSrc/src/main/java/org/springframework/boot/build/context/properties/CompoundConfigurationTableEntry.java

@@ -27,9 +27,9 @@ import java.util.stream.Stream;
  */
 class CompoundConfigurationTableEntry extends ConfigurationTableEntry {
 
-	private Set<String> configurationKeys;
+	private final Set<String> configurationKeys;
 
-	private String description;
+	private final String description;
 
 	CompoundConfigurationTableEntry(String key, String description) {
 		this.key = key;

buildSrc/src/main/java/org/springframework/boot/build/mavenplugin/MavenExec.java

@@ -39,7 +39,7 @@ import org.slf4j.LoggerFactory;
  */
 public class MavenExec extends JavaExec {
 
-	private Logger log = LoggerFactory.getLogger(MavenExec.class);
+	private final Logger log = LoggerFactory.getLogger(MavenExec.class);
 
 	private File projectDir;
 

buildSrc/src/test/java/org/springframework/boot/build/context/properties/CompoundConfigurationTableEntryTests.java

@@ -27,7 +27,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 public class CompoundConfigurationTableEntryTests {
 
-	private static String NEWLINE = System.lineSeparator();
+	private static final String NEWLINE = System.lineSeparator();
 
 	@Test
 	void simpleProperty() {

buildSrc/src/test/java/org/springframework/boot/build/context/properties/ConfigurationTableTests.java

@@ -27,7 +27,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 public class ConfigurationTableTests {
 
-	private static String NEWLINE = System.lineSeparator();
+	private static final String NEWLINE = System.lineSeparator();
 
 	@Test
 	void simpleTable() {

buildSrc/src/test/java/org/springframework/boot/build/context/properties/SingleConfigurationTableEntryTests.java

@@ -27,7 +27,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 public class SingleConfigurationTableEntryTests {
 
-	private static String NEWLINE = System.lineSeparator();
+	private static final String NEWLINE = System.lineSeparator();
 
 	@Test
 	void simpleProperty() {

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/health/AutoConfiguredHealthEndpointGroups.java

@@ -51,7 +51,7 @@ import org.springframework.util.ObjectUtils;
  */
 class AutoConfiguredHealthEndpointGroups implements HealthEndpointGroups {
 
-	private static Predicate<String> ALL = (name) -> true;
+	private static final Predicate<String> ALL = (name) -> true;
 
 	private final HealthEndpointGroup primaryGroup;
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/amqp/RabbitHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class RabbitHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(RabbitAutoConfiguration.class,
 					RabbitHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/audit/AuditAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -46,7 +46,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class AuditAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(AuditAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/availability/AvailabilityHealthContributorAutoConfigurationTests.java

@@ -34,8 +34,9 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class AvailabilityHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(AutoConfigurations
-			.of(ApplicationAvailabilityAutoConfiguration.class, AvailabilityHealthContributorAutoConfiguration.class));
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(ApplicationAvailabilityAutoConfiguration.class,
+					AvailabilityHealthContributorAutoConfiguration.class));
 
 	@Test
 	void probesWhenNotKubernetesAddsNoBeans() {

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/reactive/CloudFoundryReactiveHealthEndpointWebExtensionTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -49,7 +49,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class CloudFoundryReactiveHealthEndpointWebExtensionTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withPropertyValues("VCAP_APPLICATION={}")
 			.withConfiguration(AutoConfigurations.of(ReactiveSecurityAutoConfiguration.class,
 					ReactiveUserDetailsServiceAutoConfiguration.class, WebFluxAutoConfiguration.class,

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/servlet/CloudFoundryHealthEndpointWebExtensionTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -48,7 +48,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class CloudFoundryHealthEndpointWebExtensionTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withPropertyValues("VCAP_APPLICATION={}")
 			.withConfiguration(AutoConfigurations.of(SecurityAutoConfiguration.class, WebMvcAutoConfiguration.class,
 					JacksonAutoConfiguration.class, DispatcherServletAutoConfiguration.class,

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/servlet/CloudFoundryInfoEndpointWebExtensionTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -46,7 +46,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class CloudFoundryInfoEndpointWebExtensionTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withPropertyValues("VCAP_APPLICATION={}")
 			.withConfiguration(AutoConfigurations.of(SecurityAutoConfiguration.class, WebMvcAutoConfiguration.class,
 					JacksonAutoConfiguration.class, DispatcherServletAutoConfiguration.class,

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/couchbase/CouchbaseHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -35,7 +35,7 @@ import static org.mockito.Mockito.mock;
  */
 class CouchbaseHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withBean(Cluster.class, () -> mock(Cluster.class)).withConfiguration(AutoConfigurations
 					.of(CouchbaseHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/couchbase/CouchbaseReactiveHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -35,7 +35,7 @@ import static org.mockito.Mockito.mock;
  */
 class CouchbaseReactiveHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withBean(Cluster.class, () -> mock(Cluster.class))
 			.withConfiguration(AutoConfigurations.of(CouchbaseReactiveHealthContributorAutoConfiguration.class,
 					HealthContributorAutoConfiguration.class));

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/elasticsearch/ElasticsearchReactiveHealthContributorAutoConfigurationTests.java

@@ -36,8 +36,9 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ElasticsearchReactiveHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(AutoConfigurations
-			.of(ElasticsearchDataAutoConfiguration.class, ReactiveElasticsearchRestClientAutoConfiguration.class,
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(ElasticsearchDataAutoConfiguration.class,
+					ReactiveElasticsearchRestClientAutoConfiguration.class,
 					ElasticsearchRestClientAutoConfiguration.class,
 					ElasticSearchReactiveHealthContributorAutoConfiguration.class,
 					HealthContributorAutoConfiguration.class));

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -44,7 +44,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ServletEndpointManagementContextConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withUserConfiguration(TestConfig.class);
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/WebEndpointAutoConfigurationTests.java

@@ -54,7 +54,7 @@ class WebEndpointAutoConfigurationTests {
 	private static final AutoConfigurations CONFIGURATIONS = AutoConfigurations.of(EndpointAutoConfiguration.class,
 			WebEndpointAutoConfiguration.class);
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(CONFIGURATIONS);
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/hazelcast/HazelcastHealthContributorAutoConfigurationIntegrationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -36,7 +36,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HazelcastHealthContributorAutoConfigurationIntegrationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(HazelcastHealthContributorAutoConfiguration.class,
 					HazelcastAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/hazelcast/HazelcastHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HazelcastHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(HazelcastAutoConfiguration.class,
 					HazelcastHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/health/HealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -36,7 +36,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(HealthContributorAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/health/HealthEndpointAutoConfigurationTests.java

@@ -68,11 +68,11 @@ import static org.mockito.Mockito.mock;
 @SuppressWarnings("deprecation")
 class HealthEndpointAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withUserConfiguration(HealthIndicatorsConfiguration.class).withConfiguration(AutoConfigurations
 					.of(HealthContributorAutoConfiguration.class, HealthEndpointAutoConfiguration.class));
 
-	private ReactiveWebApplicationContextRunner reactiveContextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner reactiveContextRunner = new ReactiveWebApplicationContextRunner()
 			.withUserConfiguration(HealthIndicatorsConfiguration.class).withConfiguration(AutoConfigurations
 					.of(HealthContributorAutoConfiguration.class, HealthEndpointAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/influx/InfluxDbHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -34,7 +34,7 @@ import static org.mockito.Mockito.mock;
  */
 class InfluxDbHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withBean(InfluxDB.class, () -> mock(InfluxDB.class)).withConfiguration(AutoConfigurations
 					.of(InfluxDbHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/integrationtest/WebFluxEndpointCorsIntegrationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -46,7 +46,7 @@ import org.springframework.test.web.reactive.server.WebTestClient;
  */
 class WebFluxEndpointCorsIntegrationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(JacksonAutoConfiguration.class, CodecsAutoConfiguration.class,
 					WebFluxAutoConfiguration.class, HttpHandlerAutoConfiguration.class, EndpointAutoConfiguration.class,
 					WebEndpointAutoConfiguration.class, ManagementContextAutoConfiguration.class,

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/jdbc/DataSourceHealthContributorAutoConfigurationTests.java

@@ -48,7 +48,7 @@ import static org.mockito.Mockito.mock;
  */
 class DataSourceHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(DataSourceAutoConfiguration.class,
 					HealthContributorAutoConfiguration.class, DataSourceHealthContributorAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.initialization-mode=never");

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/jms/JmsHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -34,7 +34,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class JmsHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ActiveMQAutoConfiguration.class,
 					JmsHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/ldap/LdapHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -35,7 +35,7 @@ import static org.mockito.Mockito.mock;
  */
 class LdapHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withBean(LdapOperations.class, () -> mock(LdapOperations.class)).withConfiguration(AutoConfigurations
 					.of(LdapHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/logging/LogFileWebEndpointAutoConfigurationTests.java

@@ -42,7 +42,7 @@ import static org.assertj.core.api.Assertions.contentOf;
  */
 class LogFileWebEndpointAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(LogFileWebEndpointAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/mail/MailHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MailHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(MailSenderAutoConfiguration.class,
 					MailHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class))
 			.withPropertyValues("spring.mail.host:smtp.example.com");

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/CompositeMeterRegistryAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -41,7 +41,7 @@ class CompositeMeterRegistryAutoConfigurationTests {
 
 	private static final String COMPOSITE_NAME = "compositeMeterRegistry";
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withUserConfiguration(BaseConfig.class)
 			.withConfiguration(AutoConfigurations.of(CompositeMeterRegistryAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/MeterRegistryConfigurerIntegrationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -48,7 +48,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MeterRegistryConfigurerIntegrationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.with(MetricsRun.limitedTo(AtlasMetricsExportAutoConfiguration.class,
 					PrometheusMetricsExportAutoConfiguration.class))
 			.withConfiguration(AutoConfigurations.of(JvmMetricsAutoConfiguration.class));

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/MeterRegistryCustomizerTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -39,7 +39,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MeterRegistryCustomizerTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.with(MetricsRun.limitedTo(AtlasMetricsExportAutoConfiguration.class,
 					PrometheusMetricsExportAutoConfiguration.class))
 			.withConfiguration(AutoConfigurations.of(JvmMetricsAutoConfiguration.class));

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/MetricsAutoConfigurationIntegrationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -42,7 +42,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MetricsAutoConfigurationIntegrationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple());
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple());
 
 	@Test
 	void propertyBasedMeterFilteringIsAutoConfigured() {

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/amqp/RabbitMetricsAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class RabbitMetricsAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
 			.withConfiguration(
 					AutoConfigurations.of(RabbitAutoConfiguration.class, RabbitMetricsAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/cache/CacheMetricsAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -35,7 +35,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class CacheMetricsAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
 			.withUserConfiguration(CachingConfiguration.class).withConfiguration(
 					AutoConfigurations.of(CacheAutoConfiguration.class, CacheMetricsAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/jdbc/DataSourcePoolMetricsAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -53,7 +53,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class DataSourcePoolMetricsAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withPropertyValues("spring.datasource.generate-unique-name=true").with(MetricsRun.simple())
 			.withConfiguration(AutoConfigurations.of(DataSourcePoolMetricsAutoConfiguration.class))
 			.withUserConfiguration(BaseConfiguration.class);

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/orm/jpa/HibernateMetricsAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -58,7 +58,7 @@ import static org.mockito.Mockito.mock;
  */
 class HibernateMetricsAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
 			.withConfiguration(AutoConfigurations.of(DataSourceAutoConfiguration.class,
 					HibernateJpaAutoConfiguration.class, HibernateMetricsAutoConfiguration.class))
 			.withUserConfiguration(BaseConfiguration.class);

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/web/reactive/WebFluxMetricsAutoConfigurationTests.java

@@ -49,7 +49,7 @@ import static org.mockito.Mockito.mock;
 @ExtendWith(OutputCaptureExtension.class)
 class WebFluxMetricsAutoConfigurationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.with(MetricsRun.simple()).withConfiguration(AutoConfigurations.of(WebFluxMetricsAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/mongo/MongoHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -34,7 +34,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MongoHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(MongoAutoConfiguration.class, MongoDataAutoConfiguration.class,
 					MongoHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/mongo/MongoReactiveHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -37,7 +37,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MongoReactiveHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(MongoAutoConfiguration.class, MongoDataAutoConfiguration.class,
 					MongoReactiveAutoConfiguration.class, MongoReactiveDataAutoConfiguration.class,
 					MongoReactiveHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/redis/RedisHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -36,7 +36,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 @ClassPathExclusions({ "reactor-core*.jar", "lettuce-core*.jar" })
 class RedisHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(RedisAutoConfiguration.class,
 					RedisHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/redis/RedisReactiveHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -34,7 +34,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class RedisReactiveHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(RedisAutoConfiguration.class,
 					RedisReactiveHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/reactive/ReactiveManagementWebSecurityAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -65,7 +65,7 @@ import static org.mockito.Mockito.mock;
  */
 class ReactiveManagementWebSecurityAutoConfigurationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(HealthContributorAutoConfiguration.class,
 					HealthEndpointAutoConfiguration.class, InfoEndpointAutoConfiguration.class,
 					EnvironmentEndpointAutoConfiguration.class, EndpointAutoConfiguration.class,

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/servlet/ManagementWebSecurityAutoConfigurationTests.java

@@ -53,7 +53,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ManagementWebSecurityAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner().withConfiguration(
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner().withConfiguration(
 			AutoConfigurations.of(HealthContributorAutoConfiguration.class, HealthEndpointAutoConfiguration.class,
 					InfoEndpointAutoConfiguration.class, EnvironmentEndpointAutoConfiguration.class,
 					EndpointAutoConfiguration.class, WebEndpointAutoConfiguration.class,

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/security/servlet/SecurityRequestMatchersManagementContextConfigurationTests.java

@@ -39,7 +39,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class SecurityRequestMatchersManagementContextConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(SecurityRequestMatchersManagementContextConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/solr/SolrHealthContributorAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class SolrHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(SolrAutoConfiguration.class,
 					SolrHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/system/DiskSpaceHealthContributorAutoConfigurationTests.java

@@ -34,8 +34,9 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class DiskSpaceHealthContributorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(AutoConfigurations
-			.of(DiskSpaceHealthContributorAutoConfiguration.class, HealthContributorAutoConfiguration.class));
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(DiskSpaceHealthContributorAutoConfiguration.class,
+					HealthContributorAutoConfiguration.class));
 
 	@Test
 	void runShouldCreateIndicator() {

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/web/servlet/WebMvcEndpointChildContextConfigurationTests.java

@@ -35,7 +35,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class WebMvcEndpointChildContextConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withAllowBeanDefinitionOverriding(true);
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/web/trace/HttpTraceAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -46,7 +46,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HttpTraceAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(HttpTraceAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/availability/AvailabilityStateHealthIndicator.java

@@ -41,7 +41,7 @@ public class AvailabilityStateHealthIndicator extends AbstractHealthIndicator {
 
 	private final ApplicationAvailability applicationAvailability;
 
-	private Class<? extends AvailabilityState> stateType;
+	private final Class<? extends AvailabilityState> stateType;
 
 	private final Map<AvailabilityState, Status> statusMappings = new HashMap<>();
 

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/trace/http/reactive/HttpTraceWebFilterIntegrationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -51,7 +51,7 @@ import static org.springframework.web.reactive.function.server.RouterFunctions.r
  */
 class HttpTraceWebFilterIntegrationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withUserConfiguration(Config.class);
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationPackages.java

@@ -206,7 +206,7 @@ public abstract class AutoConfigurationPackages {
 
 	static final class BasePackagesBeanDefinition extends GenericBeanDefinition {
 
-		private Set<String> basePackages = new LinkedHashSet<>();
+		private final Set<String> basePackages = new LinkedHashSet<>();
 
 		BasePackagesBeanDefinition(String... basePackages) {
 			setBeanClass(BasePackages.class);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionMessage.java

@@ -37,7 +37,7 @@ import org.springframework.util.StringUtils;
  */
 public final class ConditionMessage {
 
-	private String message;
+	private final String message;
 
 	private ConditionMessage() {
 		this(null);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/domain/EntityScanPackages.java

@@ -150,7 +150,7 @@ public class EntityScanPackages {
 
 	static class EntityScanPackagesBeanDefinition extends GenericBeanDefinition {
 
-		private Set<String> packageNames = new LinkedHashSet<>();
+		private final Set<String> packageNames = new LinkedHashSet<>();
 
 		EntityScanPackagesBeanDefinition(Collection<String> packageNames) {
 			setBeanClass(EntityScanPackages.class);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/ldap/LdapProperties.java

@@ -67,7 +67,7 @@ public class LdapProperties {
 	 */
 	private final Map<String, String> baseEnvironment = new HashMap<>();
 
-	private Template template = new Template();
+	private final Template template = new Template();
 
 	public String[] getUrls() {
 		return this.urls;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/SecurityProperties.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -63,7 +63,7 @@ public class SecurityProperties {
 
 	private final Filter filter = new Filter();
 
-	private User user = new User();
+	private final User user = new User();
 
 	public User getUser() {
 		return this.user;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/saml2/Saml2RelyingPartyProperties.java

@@ -39,7 +39,7 @@ public class Saml2RelyingPartyProperties {
 	/**
 	 * SAML2 relying party registrations.
 	 */
-	private Map<String, Registration> registration = new LinkedHashMap<>();
+	private final Map<String, Registration> registration = new LinkedHashMap<>();
 
 	public Map<String, Registration> getRegistration() {
 		return this.registration;
@@ -62,7 +62,7 @@ public class Saml2RelyingPartyProperties {
 		/**
 		 * Remote SAML Identity Provider.
 		 */
-		private Identityprovider identityprovider = new Identityprovider();
+		private final Identityprovider identityprovider = new Identityprovider();
 
 		public String getRelyingPartyEntityId() {
 			return this.relyingPartyEntityId;
@@ -92,6 +92,10 @@ public class Saml2RelyingPartyProperties {
 				return this.credentials;
 			}
 
+			public void setCredentials(List<Credential> credentials) {
+				this.credentials = credentials;
+			}
+
 			public static class Credential {
 
 				/**
@@ -136,9 +140,9 @@ public class Saml2RelyingPartyProperties {
 		 */
 		private String entityId;
 
-		private Singlesignon singlesignon = new Singlesignon();
+		private final Singlesignon singlesignon = new Singlesignon();
 
-		private Verification verification = new Verification();
+		private final Verification verification = new Verification();
 
 		public String getEntityId() {
 			return this.entityId;
@@ -227,6 +231,10 @@ public class Saml2RelyingPartyProperties {
 				return this.credentials;
 			}
 
+			public void setCredentials(List<Credential> credentials) {
+				this.credentials = credentials;
+			}
+
 			public static class Credential {
 
 				/**

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/HttpHandlerAutoConfiguration.java

@@ -54,7 +54,7 @@ public class HttpHandlerAutoConfiguration {
 	@Configuration(proxyBeanMethods = false)
 	public static class AnnotationConfig {
 
-		private ApplicationContext applicationContext;
+		private final ApplicationContext applicationContext;
 
 		public AnnotationConfig(ApplicationContext applicationContext) {
 			this.applicationContext = applicationContext;

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchDataAutoConfigurationTests.java

@@ -43,7 +43,7 @@ import static org.mockito.Mockito.mock;
  */
 class ElasticsearchDataAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ElasticsearchRestClientAutoConfiguration.class,
 					ReactiveElasticsearchRestClientAutoConfiguration.class, ElasticsearchDataAutoConfiguration.class));
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchRepositoriesAutoConfigurationTests.java

@@ -51,7 +51,7 @@ class ElasticsearchRepositoriesAutoConfigurationTests {
 	static final ElasticsearchContainer elasticsearch = new VersionOverridingElasticsearchContainer()
 			.withStartupAttempts(5).withStartupTimeout(Duration.ofMinutes(10));
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ElasticsearchRestClientAutoConfiguration.class,
 					ElasticsearchRepositoriesAutoConfiguration.class, ElasticsearchDataAutoConfiguration.class))
 			.withPropertyValues("spring.elasticsearch.rest.uris=" + elasticsearch.getHttpHostAddress());

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ReactiveElasticsearchRepositoriesAutoConfigurationTests.java

@@ -50,7 +50,7 @@ public class ReactiveElasticsearchRepositoriesAutoConfigurationTests {
 	static ElasticsearchContainer elasticsearch = new VersionOverridingElasticsearchContainer().withStartupAttempts(5)
 			.withStartupTimeout(Duration.ofMinutes(10));
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ReactiveElasticsearchRestClientAutoConfiguration.class,
 					ReactiveElasticsearchRepositoriesAutoConfiguration.class, ElasticsearchDataAutoConfiguration.class))
 			.withPropertyValues("spring.data.elasticsearch.client.reactive.endpoints=" + elasticsearch.getHost() + ":"

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ReactiveElasticsearchRestClientAutoConfigurationTests.java

@@ -50,7 +50,7 @@ public class ReactiveElasticsearchRestClientAutoConfigurationTests {
 	static ElasticsearchContainer elasticsearch = new VersionOverridingElasticsearchContainer().withStartupAttempts(5)
 			.withStartupTimeout(Duration.ofMinutes(10));
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ReactiveElasticsearchRestClientAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/redis/RedisReactiveAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class RedisReactiveAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(
 			AutoConfigurations.of(RedisAutoConfiguration.class, RedisReactiveAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/flyway/Flyway5xAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -39,7 +39,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 @ClassPathOverrides("org.flywaydb:flyway-core:5.2.4")
 class Flyway5xAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(FlywayAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.generate-unique-name=true");
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/flyway/FlywayAutoConfigurationTests.java

@@ -82,7 +82,7 @@ import static org.mockito.Mockito.mock;
 @ExtendWith(OutputCaptureExtension.class)
 class FlywayAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(FlywayAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.generate-unique-name=true");
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/hateoas/HypermediaAutoConfigurationTests.java

@@ -52,7 +52,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HypermediaAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withUserConfiguration(BaseConfig.class);
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/hazelcast/HazelcastJpaDependencyAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -48,7 +48,7 @@ class HazelcastJpaDependencyAutoConfigurationTests {
 	private static final String POST_PROCESSOR_BEAN_NAME = HazelcastInstanceEntityManagerFactoryDependsOnPostProcessor.class
 			.getName();
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(DataSourceAutoConfiguration.class,
 					HibernateJpaAutoConfiguration.class, HazelcastJpaDependencyAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.generate-unique-name=true",

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/http/HttpMessageConvertersAutoConfigurationTests.java

@@ -65,7 +65,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HttpMessageConvertersAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(HttpMessageConvertersAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/http/codec/CodecsAutoConfigurationTests.java

@@ -42,7 +42,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class CodecsAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(CodecsAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/info/ProjectInfoAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -37,7 +37,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ProjectInfoAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(
 			AutoConfigurations.of(PropertyPlaceholderAutoConfiguration.class, ProjectInfoAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/integration/IntegrationAutoConfigurationTests.java

@@ -70,7 +70,7 @@ import static org.mockito.Mockito.mock;
  */
 class IntegrationAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(JmxAutoConfiguration.class, IntegrationAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jdbc/DataSourceInitializerInvokerTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -57,7 +57,7 @@ import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
  */
 class DataSourceInitializerInvokerTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(DataSourceAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.initialization-mode=never",
 					"spring.datasource.url:jdbc:hsqldb:mem:init-" + UUID.randomUUID());

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jdbc/HikariDataSourceConfigurationTests.java

@@ -34,7 +34,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class HikariDataSourceConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(DataSourceAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.initialization-mode=never",
 					"spring.datasource.type=" + HikariDataSource.class.getName());

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jooq/JooqAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -65,7 +65,7 @@ import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
  */
 class JooqAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(JooqAutoConfiguration.class))
 			.withPropertyValues("spring.datasource.name:jooqtest");
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/kubernetes/ApplicationAvailabilityAutoConfigurationTests.java

@@ -32,7 +32,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ApplicationAvailabilityAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ApplicationAvailabilityAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/ldap/LdapAutoConfigurationTests.java

@@ -42,7 +42,7 @@ import static org.mockito.Mockito.mock;
  */
 class LdapAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(LdapAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/oauth2/client/reactive/ReactiveOAuth2ClientAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -62,8 +62,9 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ReactiveOAuth2ClientAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(AutoConfigurations
-			.of(ReactiveOAuth2ClientAutoConfiguration.class, ReactiveSecurityAutoConfiguration.class));
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(ReactiveOAuth2ClientAutoConfiguration.class,
+					ReactiveSecurityAutoConfiguration.class));
 
 	private static final String REGISTRATION_PREFIX = "spring.security.oauth2.client.registration";
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/oauth2/resource/reactive/ReactiveOAuth2ResourceServerAutoConfigurationTests.java

@@ -74,7 +74,7 @@ import static org.mockito.Mockito.mock;
  */
 class ReactiveOAuth2ResourceServerAutoConfigurationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ReactiveOAuth2ResourceServerAutoConfiguration.class))
 			.withUserConfiguration(TestConfig.class);
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/reactive/ReactiveSecurityAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -38,7 +38,7 @@ import static org.mockito.Mockito.mock;
  */
 class ReactiveSecurityAutoConfigurationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner();
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner();
 
 	@Test
 	void backsOffWhenWebFilterChainProxyBeanPresent() {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/rsocket/RSocketSecurityAutoConfigurationTests.java

@@ -39,9 +39,10 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class RSocketSecurityAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(AutoConfigurations
-			.of(ReactiveUserDetailsServiceAutoConfiguration.class, RSocketSecurityAutoConfiguration.class,
-					RSocketMessagingAutoConfiguration.class, RSocketStrategiesAutoConfiguration.class));
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(ReactiveUserDetailsServiceAutoConfiguration.class,
+					RSocketSecurityAutoConfiguration.class, RSocketMessagingAutoConfiguration.class,
+					RSocketStrategiesAutoConfiguration.class));
 
 	@Test
 	void autoConfigurationEnablesRSocketSecurity() {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/saml2/Saml2RelyingPartyAutoConfigurationTests.java

@@ -51,7 +51,7 @@ public class Saml2RelyingPartyAutoConfigurationTests {
 
 	private static final String PREFIX = "spring.security.saml2.relyingparty.registration";
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner().withConfiguration(
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner().withConfiguration(
 			AutoConfigurations.of(Saml2RelyingPartyAutoConfiguration.class, SecurityAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/servlet/SecurityAutoConfigurationTests.java

@@ -56,7 +56,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class SecurityAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner().withConfiguration(
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner().withConfiguration(
 			AutoConfigurations.of(SecurityAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/task/TaskSchedulingAutoConfigurationTests.java

@@ -47,7 +47,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class TaskSchedulingAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withUserConfiguration(TestConfiguration.class)
 			.withConfiguration(AutoConfigurations.of(TaskSchedulingAutoConfiguration.class));
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/thymeleaf/ThymeleafReactiveAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -63,7 +63,7 @@ class ThymeleafReactiveAutoConfigurationTests {
 
 	private final BuildOutput buildOutput = new BuildOutput(getClass());
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ThymeleafAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/validation/ValidatorAdapterTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -46,7 +46,7 @@ import static org.mockito.Mockito.verify;
  */
 class ValidatorAdapterTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner();
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner();
 
 	@Test
 	void wrapLocalValidatorFactoryBean() {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ResourcePropertiesBindingTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -35,7 +35,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class ResourcePropertiesBindingTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withUserConfiguration(TestConfiguration.class);
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/ReactiveWebServerFactoryAutoConfigurationTests.java

@@ -66,7 +66,7 @@ import static org.mockito.Mockito.verify;
  */
 class ReactiveWebServerFactoryAutoConfigurationTests {
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner(
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner(
 			AnnotationConfigReactiveWebServerApplicationContext::new)
 					.withConfiguration(AutoConfigurations.of(ReactiveWebServerFactoryAutoConfiguration.class));
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/WebFluxAutoConfigurationTests.java

@@ -91,7 +91,7 @@ class WebFluxAutoConfigurationTests {
 
 	private static final MockReactiveWebServerFactory mockReactiveWebServerFactory = new MockReactiveWebServerFactory();
 
-	private ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(WebFluxAutoConfiguration.class))
 			.withUserConfiguration(Config.class);
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/function/client/ClientHttpConnectorAutoConfigurationTests.java

@@ -42,7 +42,7 @@ import static org.mockito.Mockito.verify;
  */
 class ClientHttpConnectorAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ClientHttpConnectorAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/function/client/WebClientAutoConfigurationTests.java

@@ -50,7 +50,7 @@ import static org.mockito.Mockito.verify;
  */
 class WebClientAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().withConfiguration(
 			AutoConfigurations.of(ClientHttpConnectorAutoConfiguration.class, WebClientAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/DispatcherServletAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -46,7 +46,7 @@ import static org.mockito.Mockito.mock;
  */
 class DispatcherServletAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(DispatcherServletAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/ServletWebServerFactoryAutoConfigurationTests.java

@@ -79,7 +79,7 @@ import static org.mockito.Mockito.verify;
  */
 class ServletWebServerFactoryAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner(
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner(
 			AnnotationConfigServletWebServerApplicationContext::new)
 					.withConfiguration(AutoConfigurations.of(ServletWebServerFactoryAutoConfiguration.class,
 							DispatcherServletAutoConfiguration.class))

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/error/BasicErrorControllerMockMvcTests.java

@@ -212,9 +212,9 @@ class BasicErrorControllerMockMvcTests {
 
 	private class ErrorDispatcher implements RequestBuilder {
 
-		private MvcResult result;
+		private final MvcResult result;
 
-		private String path;
+		private final String path;
 
 		ErrorDispatcher(MvcResult result, String path) {
 			this.result = result;

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/compiler/AnnotatedNodeASTTransformation.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -104,7 +104,7 @@ public abstract class AnnotatedNodeASTTransformation implements ASTTransformatio
 
 		private final SourceUnit source;
 
-		private List<AnnotationNode> annotationNodes;
+		private final List<AnnotationNode> annotationNodes;
 
 		ClassVisitor(SourceUnit source, List<AnnotationNode> annotationNodes) {
 			this.source = source;

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/restart/classloader/ClassLoaderFileURLStreamHandler.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -31,7 +31,7 @@ import java.net.URLStreamHandler;
  */
 public class ClassLoaderFileURLStreamHandler extends URLStreamHandler {
 
-	private ClassLoaderFile file;
+	private final ClassLoaderFile file;
 
 	public ClassLoaderFileURLStreamHandler(ClassLoaderFile file) {
 		this.file = file;

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/data/redis/ExampleService.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -33,7 +33,7 @@ public class ExampleService {
 
 	private static final Charset CHARSET = StandardCharsets.UTF_8;
 
-	private RedisOperations<Object, Object> operations;
+	private final RedisOperations<Object, Object> operations;
 
 	public ExampleService(RedisOperations<Object, Object> operations) {
 		this.operations = operations;

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/web/client/AnotherExampleRestClient.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -28,7 +28,7 @@ import org.springframework.web.client.RestTemplate;
 @Service
 public class AnotherExampleRestClient {
 
-	private RestTemplate restTemplate;
+	private final RestTemplate restTemplate;
 
 	public AnotherExampleRestClient(RestTemplateBuilder builder) {
 		this.restTemplate = builder.rootUri("https://example.com").build();

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/web/reactive/WebTestClientAutoConfigurationTests.java

@@ -49,7 +49,7 @@ import static org.mockito.Mockito.verify;
  */
 class WebTestClientAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(WebTestClientAutoConfiguration.class));
 
 	@Test

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/web/servlet/MockMvcAutoConfigurationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -31,7 +31,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class MockMvcAutoConfigurationTests {
 
-	private WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(MockMvcAutoConfiguration.class));
 
 	@Test