ArchUnit is a free, simple and extensible library for checking the architecture of your Java code. That is, ArchUnit can check dependencies between packages and classes, layers and slices, check for cyclic dependencies and more. It does so by analyzing given Java bytecode, importing all classes into a Java code structure. ArchUnit's main focus is to automatically test architecture and coding rules, using any plain Java unit testing framework.

testImplementation 'com.tngtech.archunit:archunit:1.3.0'

<dependency>
    <groupId>com.tngtech.archunit</groupId>
    <artifactId>archunit</artifactId>
    <version>1.3.0</version>
    <scope>test</scope>
</dependency>

import com.tngtech.archunit.core.domain.JavaClasses;
import com.tngtech.archunit.core.importer.ClassFileImporter;
import com.tngtech.archunit.lang.ArchRule;

import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.classes;

public class MyArchitectureTest {
    @Test
    public void some_architecture_rule() {
        JavaClasses importedClasses = new ClassFileImporter().importPackages("com.myapp");
    
        ArchRule rule = classes()... // see next section
    
        rule.check(importedClasses);
    }
}

For further information, check out the user guide at http://archunit.org or test examples for the current release at ArchUnit Examples.

ArchUnit is published under the Apache License 2.0, see http://www.apache.org/licenses/LICENSE-2.0 for details.

It redistributes some third party libraries:

• ASM (http://asm.ow2.org), under BSD Licence
• Google Guava (https://github.com/google/guava), under Apache License 2.0

All licenses for ArchUnit and redistributed libraries can be found within the licenses folder.