test/langtools/tools/javac/defaultMethods/private/PrivateInterfaceMethodProcessorTest.java

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/*
 * @test
 * @bug 8175184
 * @summary Annotation processor observes interface private methods as default methods
 * @library /tools/javac/lib
 * @modules java.compiler
 *          jdk.compiler
 * @build   JavacTestingAbstractProcessor PrivateInterfaceMethodProcessorTest
 * @compile/process -processor PrivateInterfaceMethodProcessorTest -proc:only PrivateInterfaceMethodProcessorTest_I
 */

import java.util.Set;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import static javax.lang.model.util.ElementFilter.*;

interface PrivateInterfaceMethodProcessorTest_I {
    private void foo() {}
}

public class PrivateInterfaceMethodProcessorTest extends JavacTestingAbstractProcessor {
    public boolean process(Set<? extends TypeElement> annotations,
                           RoundEnvironment roundEnv) {
        if (!roundEnv.processingOver()) {
            for (Element element : roundEnv.getRootElements()) {
                for (ExecutableElement method : methodsIn(element.getEnclosedElements())) {
                    if (method.isDefault()) {
                        throw new AssertionError("Unexpected default method seen");
                    }
                }
            }
        }
        return true;
    }
}