| // 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.ir.optimize.membervaluepropagation; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class MinSdkMemberValuePropagationTest extends TestBase { |
| |
| private final TestParameters parameters; |
| private final String rule; |
| private final String value; |
| |
| @Parameterized.Parameters(name = "{0}, rule: {1}, value: {2}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withAllRuntimes().build(), |
| ImmutableList.of("assumenosideeffects", "assumevalues"), |
| ImmutableList.of("42", "42..43")); |
| } |
| |
| public MinSdkMemberValuePropagationTest(TestParameters parameters, String rule, String value) { |
| this.parameters = parameters; |
| this.rule = rule; |
| this.value = value; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class) |
| .addKeepMainRule(TestClass.class) |
| .addKeepRules( |
| "-" + rule + " class " + Library.class.getTypeName() + " {", |
| " static int MIN_SDK return " + value + ";", |
| "}") |
| .addLibraryClasses(Library.class) |
| .addLibraryFiles(runtimeJar(parameters)) |
| .setMinApi(parameters.getRuntime()) |
| .compile() |
| .inspect(this::verifyOutput) |
| .addRunClasspathFiles( |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(Library.class) |
| .addKeepAllClassesRule() |
| .setMinApi(parameters.getRuntime()) |
| .compile() |
| .writeToZip()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| private void verifyOutput(CodeInspector inspector) { |
| ClassSubject classSubject = inspector.clazz(TestClass.class); |
| assertThat(classSubject, isPresent()); |
| |
| MethodSubject mainSubject = classSubject.mainMethod(); |
| assertThat(mainSubject, isPresent()); |
| |
| boolean readsMinSdkField = |
| mainSubject |
| .streamInstructions() |
| .anyMatch(x -> x.isStaticGet() && x.getField().name.toString().equals("MIN_SDK")); |
| assertEquals(rule.equals("assumevalues"), readsMinSdkField); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| if (Library.MIN_SDK >= 42) { |
| System.out.println("Hello world!"); |
| } |
| } |
| } |
| |
| static class Library { |
| |
| static int MIN_SDK = -1; |
| } |
| } |