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// Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.shaking.annotations;
import com.android.tools.r8.NeverInline;
import com.android.tools.r8.NeverMerge;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
import com.android.tools.r8.utils.StringUtils;
import java.lang.annotation.Annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Method;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
@RunWith(Parameterized.class)
public class AnnotationsOnTargetedMethodTest extends TestBase {
private static final String expectedOutput =
StringUtils.lines(
"In InterfaceImpl.targetedMethod()",
"In OtherInterfaceImpl.targetedMethod()",
MyAnnotation.class.getName());
private final TestParameters parameters;
@Parameters(name = "{0}")
public static TestParametersCollection data() {
return getTestParameters().withAllRuntimes().withAllApiLevels().build();
}
public AnnotationsOnTargetedMethodTest(TestParameters parameters) {
this.parameters = parameters;
}
@Test
public void test() throws Exception {
if (parameters.isCfRuntime()) {
testForJvm()
.addTestClasspath()
.run(parameters.getRuntime(), TestClass.class)
.assertSuccessWithOutput(expectedOutput);
}
testForR8(parameters.getBackend())
.addInnerClasses(AnnotationsOnTargetedMethodTest.class)
.addKeepMainRule(TestClass.class)
.addKeepRules("-keepattributes *Annotation*", "-dontobfuscate")
.enableInliningAnnotations()
.enableMergeAnnotations()
.setMinApi(parameters.getApiLevel())
.run(parameters.getRuntime(), TestClass.class)
.assertSuccessWithOutput(expectedOutput);
}
static class TestClass {
public static void main(String[] args) {
test(new InterfaceImpl());
test(new OtherInterfaceImpl());
Method method = Interface.class.getDeclaredMethods()[0];
for (Annotation annotation : method.getAnnotations()) {
visitAnnotation((MyAnnotation) annotation);
}
}
@NeverInline
private static void test(Interface obj) {
obj.targetedMethod();
}
@NeverInline
private static void visitAnnotation(MyAnnotation annotation) {
System.out.println(annotation.annotationType().getName());
}
}
@NeverMerge
interface Interface {
@NeverInline
@MyAnnotation
void targetedMethod();
}
static class InterfaceImpl implements Interface {
@NeverInline
@Override
public void targetedMethod() {
System.out.println("In InterfaceImpl.targetedMethod()");
}
}
static class OtherInterfaceImpl implements Interface {
@NeverInline
@Override
public void targetedMethod() {
System.out.println("In OtherInterfaceImpl.targetedMethod()");
}
}
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
@interface MyAnnotation {}
}