| // Copyright (c) 2022, 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.maindexlist; |
| |
| 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.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.IntBox; |
| import com.android.tools.r8.utils.ZipUtils; |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class EmptyMainDexInputTest extends TestBase { |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withNoneRuntime().build(); |
| } |
| |
| public EmptyMainDexInputTest(TestParameters parameters) { |
| parameters.assertNoneRuntime(); |
| } |
| |
| @Test |
| public void testMainDexRulesAvoidsMainDexCheck() throws Exception { |
| Path app = temp.newFolder().toPath().resolve("app.jar"); |
| MainDexListTests.generateManyClassesMultiDexApp(app); |
| |
| Path debugOut = |
| testForD8(Backend.DEX) |
| .addProgramFiles(app) |
| .setMinApi(AndroidApiLevel.B) |
| .addMainDexRules("-keep class com.example.NotPresent") |
| .debug() |
| .compile() |
| .writeToZip(); |
| checkOutputIsTwoFiles(debugOut); |
| |
| Path releaseOut = |
| testForD8(Backend.DEX) |
| .addProgramFiles(app) |
| .setMinApi(AndroidApiLevel.B) |
| .addMainDexRules("-keep class com.example.NotPresent") |
| .release() |
| .compile() |
| .writeToZip(); |
| checkOutputIsTwoFiles(releaseOut); |
| } |
| |
| private void checkOutputIsTwoFiles(Path out) throws IOException { |
| // The example application fits in two files, check we don't have an empty "main-dex file". |
| IntBox classesFileCount = new IntBox(0); |
| ZipUtils.iter( |
| out, |
| (entry, input) -> { |
| if (entry.getName().startsWith("classes")) { |
| classesFileCount.increment(); |
| } |
| }); |
| assertEquals(2, classesFileCount.get()); |
| } |
| } |