| // 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.keptgraph; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.NeverMerge; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersBuilder; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.references.Reference; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.graphinspector.GraphInspector; |
| import com.android.tools.r8.utils.graphinspector.GraphInspector.QueryNode; |
| 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 KeptSubclassKeepsSuperTest extends TestBase { |
| |
| private static final Class<?> CLASS = TestClass.class; |
| private static final String EXPECTED = StringUtils.lines("Foo!"); |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return TestParametersBuilder.builder().withCfRuntimes().build(); |
| } |
| |
| public KeptSubclassKeepsSuperTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| GraphInspector inspector = |
| testForR8(parameters.getBackend()) |
| .enableGraphInspector() |
| .enableMergeAnnotations() |
| .addProgramClasses(CLASS, Foo.class, Bar.class) |
| .addKeepMainRule(CLASS) |
| .run(parameters.getRuntime(), CLASS) |
| .assertSuccessWithOutput(EXPECTED) |
| .graphInspector(); |
| |
| // The only root should be the keep main-method rule. |
| assertEquals(1, inspector.getRoots().size()); |
| inspector.rule(Origin.unknown(), 1, 1).assertRoot(); |
| |
| QueryNode fooClass = inspector.clazz(Reference.classFromClass(Foo.class)); |
| fooClass.assertPresent(); |
| |
| QueryNode barClass = inspector.clazz(Reference.classFromClass(Bar.class)); |
| barClass.assertPresent().assertKeptBy(fooClass); |
| } |
| |
| @NeverMerge |
| public abstract static class Bar {} |
| |
| public static final class Foo extends Bar { |
| |
| static final Foo INSTANCE = new Foo(); |
| |
| public static Foo getInstance() { |
| return INSTANCE; |
| } |
| |
| private Foo() {} |
| |
| @Override |
| public String toString() { |
| return "Foo!"; |
| } |
| } |
| |
| public static class TestClass { |
| public Bar bar; |
| |
| public TestClass() { |
| this.bar = Foo.getInstance(); |
| } |
| |
| public static void main(String[] args) { |
| System.out.println(new TestClass().bar.toString()); |
| } |
| } |
| } |