| // Copyright (c) 2020, 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.ir.optimize.string; |
| |
| 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.google.common.collect.Sets; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class StringBuilderWithEscapingAliasTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public StringBuilderWithEscapingAliasTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class) |
| .addKeepMainRule(TestClass.class) |
| .addOptionsModification( |
| options -> |
| options.itemFactory.libraryMethodsReturningReceiver = Sets.newIdentityHashSet()) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(StringUtils.times(StringUtils.lines("Hello world!"), 2)); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| StringBuilder builder = new StringBuilder(); |
| StringBuilder alias = builder.append("Hello"); |
| builder.append(" world!"); |
| System.out.println(builder.toString()); |
| System.out.println(alias.toString()); |
| } |
| } |
| } |