| // Copyright (c) 2016, 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; |
| |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.dex.DexParser; |
| import com.android.tools.r8.dex.DexSection; |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import org.junit.Assert; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class R8CodeCanonicalizationTest { |
| |
| private static final Path SOURCE_DEX = Paths.get( |
| ToolHelper.EXAMPLES_BUILD_DIR, "invokeempty", "classes.dex"); |
| |
| private int readNumberOfCodes(Path file) throws IOException { |
| DexSection[] dexSections = DexParser.parseMapFrom(file); |
| for (DexSection dexSection : dexSections) { |
| if (dexSection.type == Constants.TYPE_CODE_ITEM) { |
| return dexSection.length; |
| } |
| } |
| return 0; |
| } |
| |
| @Rule |
| public TemporaryFolder temp = ToolHelper.getTemporaryFolderForTest(); |
| |
| @Test |
| public void testNumberOfCodeItemsUnchanged() throws Exception { |
| int numberOfCodes = readNumberOfCodes(SOURCE_DEX); |
| R8Command.Builder builder = R8Command.builder() |
| .addLibraryFiles(ToolHelper.getDefaultAndroidJar()) |
| .setOutput(temp.getRoot().toPath(), OutputMode.DexIndexed); |
| ToolHelper.getAppBuilder(builder).addProgramFiles(SOURCE_DEX); |
| R8.run(builder.build()); |
| |
| int newNumberOfCodes = readNumberOfCodes( |
| Paths.get(temp.getRoot().getCanonicalPath(), "classes.dex")); |
| Assert.assertEquals("Number of codeitems does not change.", numberOfCodes, newNumberOfCodes); |
| } |
| |
| } |