| // 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; |
| |
| import static org.hamcrest.CoreMatchers.equalTo; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.utils.Box; |
| import com.android.tools.r8.utils.StringUtils; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class UsageInformationConsumerTest extends TestBase { |
| |
| static final String EXPECTED = StringUtils.lines("Hello, world"); |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().withAllApiLevels().build(); |
| } |
| |
| public UsageInformationConsumerTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testConsumer() throws Exception { |
| Box<String> usageData = new Box<>(); |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class, UnusedClass.class) |
| .addKeepClassAndMembersRules(TestClass.class) |
| .apply( |
| b -> b.getBuilder().setProguardUsageConsumer(ToolHelper.consumeString(usageData::set))) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| assertEquals(StringUtils.lines(UnusedClass.class.getTypeName()), usageData.get()); |
| } |
| |
| @Test |
| public void testRule() throws Exception { |
| testForR8(parameters.getBackend()) |
| .collectStdout() |
| .addProgramClasses(TestClass.class, UnusedClass.class) |
| .addKeepClassAndMembersRules(TestClass.class) |
| .addKeepRules("-printusage") |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .assertStdoutThatMatches(equalTo(StringUtils.lines(UnusedClass.class.getTypeName()))) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| } |
| |
| static class UnusedClass { |
| public static void foo() { |
| System.out.println("FOO!"); |
| } |
| } |
| |
| static class TestClass { |
| public static void main(String[] args) { |
| System.out.println("Hello, world"); |
| } |
| } |
| } |