<dependency>
    <groupId>com.tngtech.archunit</groupId>
    <artifactId>archunit-junit5</artifactId>
    <version>0.13.1</version>
    <scope>test</scope>
</dependency>

package com.sivalabs.moviebuffs;
import com.tngtech.archunit.core.domain.JavaClasses;
import com.tngtech.archunit.core.importer.ClassFileImporter;
import com.tngtech.archunit.core.importer.ImportOption;
import org.junit.jupiter.api.Test;
import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.*;
import static com.tngtech.archunit.library.Architectures.layeredArchitecture;
class ArchTest {
    @Test
    void servicesAndRepositoriesShouldNotDependOnWebLayer() {
      JavaClasses importedClasses = new ClassFileImporter()
          .withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
          .importPackages("com.sivalabs.moviebuffs");
      noClasses()
          .that().resideInAnyPackage("com.sivalabs.moviebuffs.core.service..")
            .or().resideInAnyPackage("com.sivalabs.moviebuffs.core.repository..")
          .should()
            .dependOnClassesThat()
            .resideInAnyPackage("com.sivalabs.moviebuffs.web..")
          .because("Services and repositories should not depend on web layer")
          .check(importedClasses);
    }
}

@Test
void shouldFollowLayeredArchitecture() {
  JavaClasses importedClasses = new ClassFileImporter()
          .withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
          .importPackages("com.sivalabs.moviebuffs");
  layeredArchitecture()
      .layer("Web").definedBy("..web..")
      .layer("Config").definedBy("..config..")
      .layer("Service").definedBy("..service..")
      .layer("Persistence").definedBy("..repository..")
      .whereLayer("Web").mayNotBeAccessedByAnyLayer()
      .whereLayer("Service").mayOnlyBeAccessedByLayers("Config", "Web")
      .whereLayer("Persistence").mayOnlyBeAccessedByLayers("Service")
      .check(importedClasses);
}

@Test
void shouldNotUseFieldInjection() {
    JavaClasses importedClasses = new ClassFileImporter()
          .withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
          .importPackages("com.sivalabs.moviebuffs");
    noFields()
      .should().beAnnotatedWith(Autowired.class)
      .check(importedClasses);
}

@Test
void shouldFollowNamingConvention() {
    JavaClasses importedClasses = new ClassFileImporter()
        .withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
        .importPackages("com.sivalabs.moviebuffs");
    classes()
        .that().resideInAPackage("com.sivalabs.moviebuffs.core.repository")
        .should().haveSimpleNameEndingWith("Repository")
        .check(importedClasses);
    classes()
        .that().resideInAPackage("com.sivalabs.moviebuffs.core.service")
        .should().haveSimpleNameEndingWith("Service")
        .check(importedClasses);
}

@Test
void shouldNotUseJunit4Classes() {
    JavaClasses classes = new ClassFileImporter()
        .importPackages("com.sivalabs.moviebuffs");
    noClasses()
        .should().accessClassesThat().resideInAnyPackage("org.junit")
        .because("Tests should use Junit5 instead of Junit4")
        .check(classes);
    noMethods().should().beAnnotatedWith("org.junit.Test")
        .orShould().beAnnotatedWith("org.junit.Ignore")
        .because("Tests should use Junit5 instead of Junit4")
        .check(classes);
}