Service rules

ServiceRulesTest.java

import com.tngtech.archunit.junit.AnalyzeClasses;
import com.tngtech.archunit.junit.ArchTest;
import com.tngtech.archunit.lang.ArchRule;
import com.tngtech.archunit.core.importer.ImportOption;
import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.fields;

@AnalyzeClasses(packages = "com.example.archunit", importOptions = ImportOption.DoNotIncludeTests.class) //1
class ServiceRulesTest {
	
    @ArchTest //2
    static final ArchRule fields_should_not_be_public = fields()
              .that().areDeclaredInClassesThat()
              .resideInAPackage("com.example.archunit.service")
              .should().notBePublic()
              .because("Public fields are not allowed in Service classes"); //3
}