| // 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.shaking.assumevalues; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| 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 AssumeReturnsFieldWithSubtypingTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .addKeepRules( |
| "-assumevalues class " + Main.class.getTypeName() + " {", |
| " java.lang.Object getGreeting() return " + Main.class.getTypeName() + ".greeting;", |
| "}", |
| // TODO(b/233828966): Maybe disallow shrinking of this in the first round of shaking. |
| "-keepclassmembers,allowobfuscation class " + Main.class.getTypeName() + "{", |
| " java.lang.String greeting;", |
| "}") |
| .setMinApi(parameters) |
| .compile() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| static class Main { |
| |
| static String greeting = System.currentTimeMillis() > 0 ? "Hello world!" : null; |
| |
| public static void main(String[] args) { |
| System.out.println(getGreeting()); |
| } |
| |
| static Object getGreeting() { |
| return "Unexpected"; |
| } |
| } |
| } |