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// Copyright (c) 2019, 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.keepclassmembers;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
import static com.android.tools.r8.utils.codeinspector.Matchers.isRenamed;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.MatcherAssert.assertThat;
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.codeinspector.ClassSubject;
import com.android.tools.r8.utils.codeinspector.CodeInspector;
import com.android.tools.r8.utils.codeinspector.FieldSubject;
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 KeepClassMembersRuleOnIndirectlyInstantiatedClassTest extends TestBase {
private final TestParameters parameters;
@Parameters(name = "{0}")
public static TestParametersCollection data() {
return getTestParameters().withAllRuntimes().build();
}
public KeepClassMembersRuleOnIndirectlyInstantiatedClassTest(TestParameters parameters) {
this.parameters = parameters;
}
@Test
public void test() throws Exception {
testForR8(parameters.getBackend())
.addInnerClasses(KeepClassMembersRuleOnIndirectlyInstantiatedClassTest.class)
.addKeepMainRule(TestClass.class)
.addKeepRules(
"-keepclassmembers class " + A.class.getTypeName() + " {",
" java.lang.String greeting;",
"}")
.enableInliningAnnotations()
.enableMergeAnnotations()
.setMinApi(parameters.getRuntime())
.compile()
.inspect(this::verifyFieldIsPresent)
.run(parameters.getRuntime(), TestClass.class)
.assertSuccessWithOutputLines("Hello world!");
}
private void verifyFieldIsPresent(CodeInspector inspector) {
ClassSubject classSubject = inspector.clazz(A.class);
assertThat(classSubject, isPresent());
FieldSubject fieldSubject = classSubject.uniqueFieldWithName("greeting");
assertThat(fieldSubject, isPresent());
assertThat(fieldSubject, not(isRenamed()));
}
static class TestClass {
public static void main(String[] args) throws Exception {
B b = new B();
reflectivelyWriteFieldWithName(b, "greeting", "Hello world!");
System.out.println(reflectivelyReadFieldWithName(b, "greeting"));
}
@NeverInline
private static void reflectivelyWriteFieldWithName(Object o, String fieldName, String value)
throws Exception {
o.getClass().getField(fieldName).set(o, value);
}
@NeverInline
private static String reflectivelyReadFieldWithName(Object o, String fieldName)
throws Exception {
return (String) o.getClass().getField(fieldName).get(o);
}
}
@NeverMerge
static class A {
public String greeting;
}
static class B extends A {}
}