Archunit check method calls

Question

I have a class that has three methods that shouldn't be called from certain classes.

How can I check this with Archunit?

So for example

public class Foo {

   public void method1() {
   }

   public void method2() {
   }

   public void method3() {
   }
}

method1 and method2 should only be called by classes Bar1 and Bar2.

Answer 1

With

import com.tngtech.archunit.lang.ArchRule;

import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.noClasses;
import static com.tngtech.archunit.lang.conditions.ArchConditions.callMethod;

you can use

ArchRule rule = noClasses()
    .that().doNotHaveFullyQualifiedName(Bar1.class.getName())
    .and().doNotHaveFullyQualifiedName(Bar2.class.getName())
    // alternative 1:
    .should().callMethod(Foo.class, "method1")
    .orShould().callMethod(Foo.class, "method2");
    // alternative 2:
    // .should(callMethod(Foo.class, "method1").or(callMethod(Foo.class, "method2")));