ArchUnit-确保方法参数已注释

Question

我正在尝试编写一个ArchUnit测试规则，它应该确保使用@ComponentInterface注释的接口具有使用@Input注释注释的方法参数。像这样：

ArchRule rule =
        methods()
            .that()
            .areDeclaredInClassesThat()
            .areInterfaces()
            .and()
            .areDeclaredInClassesThat()
            .areAnnotatedWith(ComponentInterface.class)
            .should()
            .haveRawParameterTypes(
                allElements(CanBeAnnotated.Predicates.annotatedWith(Input.class)));

界面如下所示：

@ComponentInterface
public interface AdminComponent {
  void login(@Input(name = "loginString") String loginString);
}

但测试失败，出现如下错误：方法

在这种情况下，规则应该如何正常工作？

附言：在做了一些调试后，发现haveRawParameterTypes检查参数类型（类）是否有注释，而不是方法参数本身。所以它查看String类并发现它没有用@Input注释。很高兴知道，但这并不能解决问题。




Answer 1

您可以始终回退到反射API：

ArchRule rule = methods()
    .that().areDeclaredInClassesThat().areInterfaces()
    .and().areDeclaredInClassesThat().areAnnotatedWith(ComponentInterface.class)
    .should(haveAllParametersAnnotatedWith(Input.class));

ArchCondition<JavaMethod> haveAllParametersAnnotatedWith(Class<? extends Annotation> annotationClass) {
  return new ArchCondition<JavaMethod>("have all parameters annotated with @" + annotationClass.getSimpleName()) {
    @Override
    public void check(JavaMethod method, ConditionEvents events) {
      boolean areAllParametersAnnotated = true;
      for (Annotation[] parameterAnnotations : method.reflect().getParameterAnnotations()) {
        boolean isParameterAnnotated = false;
        for (Annotation annotation : parameterAnnotations) {
          if (annotation.annotationType().equals(annotationClass)) {
            isParameterAnnotated = true;
          }
        }
        areAllParametersAnnotated &= isParameterAnnotated;
      }
      String message = (areAllParametersAnnotated ? "" : "not ")
          + "all parameters of " + method.getDescription()
          + " are annotated with @" + annotationClass.getSimpleName();
      events.add(new SimpleConditionEvent(method, areAllParametersAnnotated, message));
    }
  };
}