如何在 ArchUnit 规则中排除一个类？

Question

在 ArchUnit 中为分层架构创建规则时，我不清楚如何排除单个类 (Main)。 基本示例排除了源和目标。

...但我不明白它是如何转换成我的需要的。我只想忽略 Main 。为什么？因为 Main 引用了所有层，因为它将所有依赖项注入到位。

原始代码 与失败的测试一起在我的 GitHub 中。（该项目是一个虚拟项目，因此运行起来很简单；只需克隆它，运行测试并看到一个失败）。

Answer 1

Consider you have imported all your classes:

JavaClasses classes = new ClassFileImporter().importPackages("org.example");

Then you typically check all these classes against an ArchRule, no matter if it's a class rule or an architecture rule:

ArchRule rule = classes()
    .that().areAnnotatedWith(Service.class)
    .should().haveSimpleNameEndingWith("Service");

rule.check(classes);

To exclude classes from the rule, you could filter classes and pass the filtered JavaClasses to the rule:

import static com.tngtech.archunit.base.DescribedPredicate.not;
import static com.tngtech.archunit.core.domain.JavaClass.Predicates.equivalentTo;
import static com.tngtech.archunit.lang.conditions.ArchPredicates.are;

JavaClasses allExceptMain = classes.that(are(not(equivalentTo(Main.class))));
rule.check(allExceptMain);

To exclude the class Main and all classes that are defined inside of Main (inner classes, anonymous classes, lambdas etc.) you could adjust the filter:

import static com.tngtech.archunit.base.DescribedPredicate.not;
import static com.tngtech.archunit.core.domain.JavaClass.Predicates.belongToAnyOf;

JavaClasses allExceptMain = classes.that(not(belongToAnyOf(Main.class)));
rule.check(allExceptMain);