| // 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; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresentAndRenamed; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| 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 com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import java.util.concurrent.atomic.AtomicIntegerFieldUpdater; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class AtomicFieldUpdaterTest extends TestBase { |
| |
| private static final String EXPECTED_OUTPUT = StringUtils.lines("Test succeeded"); |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void testJvm() throws Exception { |
| parameters.assumeJvmTestParameters(); |
| testForJvm(parameters) |
| .addTestClasspath() |
| .run(parameters.getRuntime(), AtomicFieldUpdaterTestClass.class) |
| .assertSuccessWithOutput(EXPECTED_OUTPUT); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(AtomicFieldUpdaterTestClass.class) |
| .setMinApi(parameters) |
| .compile() |
| .inspect( |
| inspector -> { |
| // Verify that the field is still there. |
| ClassSubject classSubject = |
| inspector.clazz(AtomicFieldUpdaterTestClass.A.class.getName()); |
| assertThat(classSubject, isPresentAndRenamed()); |
| assertThat(classSubject.field("int", "field"), isPresentAndRenamed()); |
| }) |
| .run(parameters.getRuntime(), AtomicFieldUpdaterTestClass.class) |
| .assertSuccessWithOutput(EXPECTED_OUTPUT); |
| } |
| |
| static class AtomicFieldUpdaterTestClass { |
| |
| public static void main(String[] args) { |
| // Throws NoSuchFieldException if field is removed by tree shaking, or if the string "field" |
| // is |
| // not renamed as a result of minification. |
| AtomicIntegerFieldUpdater.newUpdater(AtomicFieldUpdaterTestClass.A.class, "field"); |
| System.out.println("Test succeeded"); |
| } |
| |
| static class A { |
| volatile int field; |
| } |
| } |
| } |