Polish "Improve testing of architecture checks"

See gh-48139

buildSrc/src/main/java/org/springframework/boot/build/architecture/ArchitectureCheck.java

@@ -59,8 +59,6 @@ import org.gradle.api.tasks.SourceSet;
 import org.gradle.api.tasks.TaskAction;
 import org.gradle.api.tasks.VerificationException;
 
-import org.springframework.boot.build.architecture.ArchitectureCheckAnnotations.Annotation;
-
 /**
  * {@link Task} that checks for architecture problems.
  *
@@ -77,22 +75,22 @@ public abstract class ArchitectureCheck extends DefaultTask {
 
 	public ArchitectureCheck() {
 		getOutputDirectory().convention(getProject().getLayout().getBuildDirectory().dir(getName()));
-		getAnnotationClasses().convention(ArchitectureCheckAnnotations.asMap());
+		getAnnotationClasses().convention(ArchitectureCheckAnnotation.asMap());
 		getRules().addAll(getProhibitObjectsRequireNonNull().convention(true)
 			.map(whenTrue(ArchitectureRules::noClassesShouldCallObjectsRequireNonNull)));
 		getRules().addAll(ArchitectureRules.standard());
-		getRules().addAll(whenMainSources(() -> ArchitectureRules.beanMethods(
-				ArchitectureCheckAnnotations.classFor(getAnnotationClasses().get(), Annotation.CONDITIONAL_ON_CLASS))));
-		getRules().addAll(whenMainSources(() -> ArchitectureRules.conditionalOnMissingBean(ArchitectureCheckAnnotations
-			.classFor(getAnnotationClasses().get(), Annotation.CONDITIONAL_ON_MISSING_BEAN))));
-		getRules().addAll(whenMainSources(() -> ArchitectureRules.configurationProperties(ArchitectureCheckAnnotations
-			.classFor(getAnnotationClasses().get(), Annotation.CONFIGURATION_PROPERTIES))));
-		getRules()
-			.addAll(whenMainSources(() -> ArchitectureRules.configurationPropertiesBinding(ArchitectureCheckAnnotations
-				.classFor(getAnnotationClasses().get(), Annotation.CONFIGURATION_PROPERTIES_BINDING))));
-		getRules().addAll(
-				whenMainSources(() -> ArchitectureRules.configurationPropertiesDeprecation(ArchitectureCheckAnnotations
-					.classFor(getAnnotationClasses().get(), Annotation.DEPRECATED_CONFIGURATION_PROPERTY))));
+		getRules().addAll(whenMainSources(() -> ArchitectureRules.beanMethods(ArchitectureCheckAnnotation
+			.classFor(getAnnotationClasses().get(), ArchitectureCheckAnnotation.CONDITIONAL_ON_CLASS))));
+		getRules().addAll(whenMainSources(() -> ArchitectureRules.conditionalOnMissingBean(ArchitectureCheckAnnotation
+			.classFor(getAnnotationClasses().get(), ArchitectureCheckAnnotation.CONDITIONAL_ON_MISSING_BEAN))));
+		getRules().addAll(whenMainSources(() -> ArchitectureRules.configurationProperties(ArchitectureCheckAnnotation
+			.classFor(getAnnotationClasses().get(), ArchitectureCheckAnnotation.CONFIGURATION_PROPERTIES))));
+		getRules().addAll(whenMainSources(
+				() -> ArchitectureRules.configurationPropertiesBinding(ArchitectureCheckAnnotation.classFor(
+						getAnnotationClasses().get(), ArchitectureCheckAnnotation.CONFIGURATION_PROPERTIES_BINDING))));
+		getRules().addAll(whenMainSources(
+				() -> ArchitectureRules.configurationPropertiesDeprecation(ArchitectureCheckAnnotation.classFor(
+						getAnnotationClasses().get(), ArchitectureCheckAnnotation.DEPRECATED_CONFIGURATION_PROPERTY))));
 		getRuleDescriptions().set(getRules().map(this::asDescriptions));
 	}
 

buildSrc/src/main/java/org/springframework/boot/build/architecture/ArchitectureCheckAnnotation.java

@@ -23,35 +23,49 @@ import java.util.Map;
  * tests.
  *
  * @author Scott Frederick
+ * @author Stephane Nicoll
  */
-public final class ArchitectureCheckAnnotations {
+public enum ArchitectureCheckAnnotation {
 
-	enum Annotation {
+	/**
+	 * Condition on class check.
+	 */
+	CONDITIONAL_ON_CLASS,
 
-		CONDITIONAL_ON_CLASS, CONDITIONAL_ON_MISSING_BEAN, CONFIGURATION_PROPERTIES, DEPRECATED_CONFIGURATION_PROPERTY,
-		CONFIGURATION_PROPERTIES_BINDING
+	/**
+	 * Condition on missing bean check.
+	 */
+	CONDITIONAL_ON_MISSING_BEAN,
 
-	}
+	/**
+	 * Configuration properties bean.
+	 */
+	CONFIGURATION_PROPERTIES,
 
-	private ArchitectureCheckAnnotations() {
-	}
+	/**
+	 * Deprecated configuration property.
+	 */
+	DEPRECATED_CONFIGURATION_PROPERTY,
+
+	/**
+	 * Custom implementation to bind configuration properties.
+	 */
+	CONFIGURATION_PROPERTIES_BINDING;
 
-	private static final Map<String, String> annotationNameToClassName = Map.of(Annotation.CONDITIONAL_ON_CLASS.name(),
-			"org.springframework.boot.autoconfigure.condition.ConditionalOnClass",
-			Annotation.CONDITIONAL_ON_MISSING_BEAN.name(),
+	private static final Map<String, String> annotationNameToClassName = Map.of(CONDITIONAL_ON_CLASS.name(),
+			"org.springframework.boot.autoconfigure.condition.ConditionalOnClass", CONDITIONAL_ON_MISSING_BEAN.name(),
 			"org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean",
-			Annotation.CONFIGURATION_PROPERTIES.name(),
-			"org.springframework.boot.context.properties.ConfigurationProperties",
-			Annotation.DEPRECATED_CONFIGURATION_PROPERTY.name(),
+			CONFIGURATION_PROPERTIES.name(), "org.springframework.boot.context.properties.ConfigurationProperties",
+			DEPRECATED_CONFIGURATION_PROPERTY.name(),
 			"org.springframework.boot.context.properties.DeprecatedConfigurationProperty",
-			Annotation.CONFIGURATION_PROPERTIES_BINDING.name(),
+			CONFIGURATION_PROPERTIES_BINDING.name(),
 			"org.springframework.boot.context.properties.ConfigurationPropertiesBinding");
 
 	static Map<String, String> asMap() {
 		return annotationNameToClassName;
 	}
 
-	static String classFor(Map<String, String> annotationProperty, Annotation annotation) {
+	static String classFor(Map<String, String> annotationProperty, ArchitectureCheckAnnotation annotation) {
 		String name = annotation.name();
 		return annotationProperty.getOrDefault(name, asMap().get(name));
 	}

buildSrc/src/test/java/org/springframework/boot/build/architecture/ArchitectureCheckTests.java

@@ -43,7 +43,6 @@ import org.junit.jupiter.api.io.TempDir;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.EnumSource;
 
-import org.springframework.boot.build.architecture.ArchitectureCheckAnnotations.Annotation;
 import org.springframework.boot.build.architecture.annotations.TestConditionalOnClass;
 import org.springframework.boot.build.architecture.annotations.TestConditionalOnMissingBean;
 import org.springframework.boot.build.architecture.annotations.TestConfigurationProperties;
@@ -530,28 +529,31 @@ class ArchitectureCheckTests {
 		}
 
 		GradleBuild withConditionalOnClassAnnotation() {
-			configureTasks(Annotation.CONDITIONAL_ON_CLASS.name(), TestConditionalOnClass.class.getName());
+			configureTasks(ArchitectureCheckAnnotation.CONDITIONAL_ON_CLASS.name(),
+					TestConditionalOnClass.class.getName());
 			return this;
 		}
 
 		GradleBuild withConditionalOnMissingBeanAnnotation() {
-			configureTasks(Annotation.CONDITIONAL_ON_MISSING_BEAN.name(), TestConditionalOnMissingBean.class.getName());
+			configureTasks(ArchitectureCheckAnnotation.CONDITIONAL_ON_MISSING_BEAN.name(),
+					TestConditionalOnMissingBean.class.getName());
 			return this;
 		}
 
 		GradleBuild withConfigurationPropertiesAnnotation() {
-			configureTasks(Annotation.CONFIGURATION_PROPERTIES.name(), TestConfigurationProperties.class.getName());
+			configureTasks(ArchitectureCheckAnnotation.CONFIGURATION_PROPERTIES.name(),
+					TestConfigurationProperties.class.getName());
 			return this;
 		}
 
 		GradleBuild withConfigurationPropertiesBindingAnnotation() {
-			configureTasks(Annotation.CONFIGURATION_PROPERTIES_BINDING.name(),
+			configureTasks(ArchitectureCheckAnnotation.CONFIGURATION_PROPERTIES_BINDING.name(),
 					TestConfigurationPropertiesBinding.class.getName());
 			return this;
 		}
 
 		GradleBuild withDeprecatedConfigurationPropertyAnnotation() {
-			configureTasks(Annotation.DEPRECATED_CONFIGURATION_PROPERTY.name(),
+			configureTasks(ArchitectureCheckAnnotation.DEPRECATED_CONFIGURATION_PROPERTY.name(),
 					TestDeprecatedConfigurationProperty.class.getName());
 			return this;
 		}