Dependency tests are now based on ArchUnit.

Replaced ignored tests with exclusion of packages and classes.
Upgraded ArchUnit dependency to 1.0.0.

Closes #1354

pom.xml

@@ -41,7 +41,7 @@
 
 		<!-- test utilities-->
 		<awaitility.version>4.2.0</awaitility.version>
-		<archunit.version>0.23.1</archunit.version>
+		<archunit.version>1.0.0</archunit.version>
 	</properties>
 
 	<inceptionYear>2017</inceptionYear>

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/DependencyTests.java

@@ -16,7 +16,6 @@
 package org.springframework.data.jdbc;
 
 import org.assertj.core.api.SoftAssertions;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.springframework.data.auditing.config.AuditingHandlerBeanDefinitionParser;
 
@@ -43,8 +42,7 @@ public class DependencyTests {
 		JavaClasses importedClasses = new ClassFileImporter() //
 				.withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS) //
 				.withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_JARS) // we just analyze the code of this module.
-				.importPackages("org.springframework.data.jdbc")
-				.that( //
+				.importPackages("org.springframework.data.jdbc").that( //
 						onlySpringData() //
 				);
 
@@ -57,17 +55,17 @@ public class DependencyTests {
 	}
 
 	@Test
-	@Disabled("Cycle in Spring Data Commons")
 	void acrossModules() {
 
-		JavaClasses importedClasses = new ClassFileImporter()
-				.withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
+		JavaClasses importedClasses = new ClassFileImporter().withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
 				.importPackages( //
 						"org.springframework.data.jdbc", // Spring Data Relational
 						"org.springframework.data.relational", // Spring Data Relational
 						"org.springframework.data" // Spring Data Commons
 				).that(onlySpringData()) //
-				.that(ignore(AuditingHandlerBeanDefinitionParser.class));
+				.that(ignore(AuditingHandlerBeanDefinitionParser.class)) //
+				.that(ignorePackage("org.springframework.data.aot.hint")) // ignoring aot, since it causes cycles in commons
+				.that(ignorePackage("org.springframework.data.aot")); // ignoring aot, since it causes cycles in commons
 
 		ArchRule rule = SlicesRuleDefinition.slices() //
 				.assignedFrom(subModuleSlicing()) //
@@ -99,7 +97,7 @@ public class DependencyTests {
 
 		return new DescribedPredicate<>("Spring Data Classes") {
 			@Override
-			public boolean apply(JavaClass input) {
+			public boolean test(JavaClass input) {
 				return input.getPackageName().startsWith("org.springframework.data");
 			}
 		};
@@ -109,12 +107,22 @@ public class DependencyTests {
 
 		return new DescribedPredicate<>("ignored class " + type.getName()) {
 			@Override
-			public boolean apply(JavaClass input) {
+			public boolean test(JavaClass input) {
 				return !input.getFullName().startsWith(type.getName());
 			}
 		};
 	}
 
+	private DescribedPredicate<JavaClass> ignorePackage(String type) {
+
+		return new DescribedPredicate<>("ignored class " + type) {
+			@Override
+			public boolean test(JavaClass input) {
+				return !input.getPackageName().equals(type);
+			}
+		};
+	}
+
 	private String getFirstPackagePart(String subpackage) {
 
 		int index = subpackage.indexOf(".");

spring-data-r2dbc/pom.xml

@@ -306,6 +306,12 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>com.tngtech.archunit</groupId>
+			<artifactId>archunit</artifactId>
+			<version>${archunit.version}</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 	<build>

spring-data-r2dbc/src/test/java/org/springframework/data/r2dbc/DependencyTests.java

@@ -15,17 +15,20 @@
  */
 package org.springframework.data.r2dbc;
 
-import static de.schauderhaft.degraph.check.JCheck.*;
-import static org.junit.Assert.*;
-
-import de.schauderhaft.degraph.check.JCheck;
-import de.schauderhaft.degraph.configuration.NamedPattern;
-import scala.runtime.AbstractFunction1;
-
-import org.junit.Assume;
+import org.assertj.core.api.SoftAssertions;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
+import com.tngtech.archunit.base.DescribedPredicate;
+import com.tngtech.archunit.core.domain.JavaClass;
+import com.tngtech.archunit.core.domain.JavaClasses;
+import com.tngtech.archunit.core.importer.ClassFileImporter;
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.lang.ArchRule;
+import com.tngtech.archunit.library.dependencies.SliceAssignment;
+import com.tngtech.archunit.library.dependencies.SliceIdentifier;
+import com.tngtech.archunit.library.dependencies.SlicesRuleDefinition;
+
 /**
  * Test package dependencies for violations.
  *
@@ -35,40 +38,131 @@ import org.junit.jupiter.api.Test;
 public class DependencyTests {
 
 	@Test // DATAJDBC-114
-	public void cycleFree() {
+	void cycleFree() {
 
-		Assume.assumeThat( //
-				classpath() //
-						.noJars() //
-						.including("org.springframework.data.jdbc.**") //
-						.including("org.springframework.data.relational.**") //
-						.including("org.springframework.data.r2dbc.**") //
-						.filterClasspath("*target/classes") // exclude test code
-						.withSlicing("modules", "org.springframework.data.(*).**").printOnFailure("degraph.graphml"),
-				JCheck.violationFree());
+		JavaClasses importedClasses = new ClassFileImporter() //
+				.withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS) //
+				.withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_JARS) // we just analyze the code of this module.
+				.importPackages("org.springframework.data.r2dbc").that( //
+						onlySpringData() //
+				);
+
+		ArchRule rule = SlicesRuleDefinition.slices() //
+				.matching("org.springframework.data.r2dbc.(**)") //
+				.should() //
+				.beFreeOfCycles();
+
+		rule.check(importedClasses);
 	}
 
 	@Test // DATAJDBC-220
-	public void acrossModules() {
+	void acrossModules() {
+
+		JavaClasses importedClasses = new ClassFileImporter().withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
+				.importPackages( //
+						"org.springframework.data.r2dbc", // Spring Data Relational
+						"org.springframework.data.relational", // Spring Data Relational
+						"org.springframework.data" // Spring Data Commons
+				).that(onlySpringData()) //
+				.that(ignorePackage("org.springframework.data.aot.hint")) // ignoring aot, since it causes cycles in commons
+				.that(ignorePackage("org.springframework.data.aot")); // ignoring aot, since it causes cycles in commons
+
+		ArchRule rule = SlicesRuleDefinition.slices() //
+				.assignedFrom(subModuleSlicing()) //
+				.should().beFreeOfCycles();
+
+		rule.check(importedClasses);
+	}
+
+	@Test // GH-1058
+	void testGetFirstPackagePart() {
+
+		SoftAssertions.assertSoftly(softly -> {
+			softly.assertThat(getFirstPackagePart("a.b.c")).isEqualTo("a");
+			softly.assertThat(getFirstPackagePart("a")).isEqualTo("a");
+		});
+	}
 
-		assertThat( //
-				classpath() //
-						// include only Spring Data related classes (for example no JDK code)
-						.including("org.springframework.data.**") //
-						.filterClasspath(new AbstractFunction1<String, Object>() {
+	private DescribedPredicate<JavaClass> onlySpringData() {
+
+		return new DescribedPredicate<>("Spring Data Classes") {
+			@Override
+			public boolean test(JavaClass input) {
+				return input.getPackageName().startsWith("org.springframework.data");
+			}
+		};
+	}
+
+	private DescribedPredicate<JavaClass> ignore(Class<?> type) {
+
+		return new DescribedPredicate<>("ignored class " + type.getName()) {
 			@Override
-							public Object apply(String s) { //
-								// only the current module + commons
-								return s.endsWith("target/classes") || s.contains("spring-data-commons");
+			public boolean test(JavaClass input) {
+				return !input.getFullName().startsWith(type.getName());
 			}
-						}) // exclude test code
-						.withSlicing("sub-modules", // sub-modules are defined by any of the following pattern.
-								"org.springframework.data.jdbc.(**).*", //
-								"org.springframework.data.relational.(**).*", //
-								new NamedPattern("org.springframework.data.r2dbc.**", "repository.reactive"), //
-								"org.springframework.data.(**).*") //
-						.printTo("degraph-across-modules.graphml"), // writes a graphml to this location
-				JCheck.violationFree());
+		};
 	}
 
+	private DescribedPredicate<JavaClass> ignorePackage(String type) {
+
+		return new DescribedPredicate<>("ignored class " + type) {
+			@Override
+			public boolean test(JavaClass input) {
+				return !input.getPackageName().equals(type);
+			}
+		};
+	}
+
+	private String getFirstPackagePart(String subpackage) {
+
+		int index = subpackage.indexOf(".");
+		if (index < 0) {
+			return subpackage;
+		}
+		return subpackage.substring(0, index);
+	}
+
+	private String subModule(String basePackage, String packageName) {
+
+		if (packageName.startsWith(basePackage) && packageName.length() > basePackage.length()) {
+
+			final int index = basePackage.length() + 1;
+			String subpackage = packageName.substring(index);
+			return getFirstPackagePart(subpackage);
+		}
+		return "";
+	}
+
+	private SliceAssignment subModuleSlicing() {
+		return new SliceAssignment() {
+
+			@Override
+			public SliceIdentifier getIdentifierOf(JavaClass javaClass) {
+
+				String packageName = javaClass.getPackageName();
+
+				String subModule = subModule("org.springframework.data.jdbc", packageName);
+				if (!subModule.isEmpty()) {
+					return SliceIdentifier.of(subModule);
+				}
+
+				subModule = subModule("org.springframework.data.relational", packageName);
+				if (!subModule.isEmpty()) {
+					return SliceIdentifier.of(subModule);
+				}
+
+				subModule = subModule("org.springframework.data", packageName);
+				if (!subModule.isEmpty()) {
+					return SliceIdentifier.of(subModule);
+				}
+
+				return SliceIdentifier.ignore();
+			}
+
+			@Override
+			public String getDescription() {
+				return "Submodule";
+			}
+		};
+	}
 }

spring-data-relational/src/test/java/org/springframework/data/relational/DependencyTests.java

@@ -16,7 +16,6 @@
 package org.springframework.data.relational;
 
 import org.assertj.core.api.SoftAssertions;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.springframework.data.relational.core.dialect.RenderContextFactory;
 import org.springframework.data.relational.core.sql.render.SelectRenderContext;
@@ -59,7 +58,6 @@ public class DependencyTests {
 	}
 
 	@Test
-	@Disabled("Cycle in Spring Data Commons")
 	void acrossModules() {
 
 		JavaClasses importedClasses = new ClassFileImporter() //
@@ -67,8 +65,9 @@ public class DependencyTests {
 				.importPackages( //
 						"org.springframework.data.relational", // Spring Data Relational
 						"org.springframework.data" // Spring Data Commons
-				).that(onlySpringData());
-
+				).that(onlySpringData()) //
+				.that(ignorePackage("org.springframework.data.aot.hint")) // ignoring aot, since it causes cycles in commons
+				.that(ignorePackage("org.springframework.data.aot")); // ignoring aot, since it causes cycles in commons;
 
 		ArchRule rule = SlicesRuleDefinition.slices() //
 				.assignedFrom(subModuleSlicing()) //
@@ -100,7 +99,7 @@ public class DependencyTests {
 
 		return new DescribedPredicate<>("Spring Data Classes") {
 			@Override
-			public boolean apply(JavaClass input) {
+			public boolean test(JavaClass input) {
 				return input.getPackageName().startsWith("org.springframework.data");
 			}
 		};
@@ -110,12 +109,22 @@ public class DependencyTests {
 
 		return new DescribedPredicate<>("ignored class " + type.getName()) {
 			@Override
-			public boolean apply(JavaClass input) {
+			public boolean test(JavaClass input) {
 				return !input.getFullName().startsWith(type.getName());
 			}
 		};
 	}
 
+	private DescribedPredicate<JavaClass> ignorePackage(String type) {
+
+		return new DescribedPredicate<>("ignored class " + type) {
+			@Override
+			public boolean test(JavaClass input) {
+				return !input.getPackageName().equals(type);
+			}
+		};
+	}
+
 	private String getFirstPackagePart(String subpackage) {
 
 		int index = subpackage.indexOf(".");