| // 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.shaking.assumenosideeffects; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| 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.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class StringBuildersAfterAssumenosideeffectsTest extends TestBase { |
| private static final Class<?> MAIN = TestClassAfterAssumenosideeffects.class; |
| private static final String EXPECTED = StringUtils.lines("The end"); |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().build(); |
| } |
| |
| private final TestParameters parameters; |
| |
| public StringBuildersAfterAssumenosideeffectsTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| assumeTrue("CF does not rewrite move results.", parameters.isDexRuntime()); |
| |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(StringBuildersAfterAssumenosideeffectsTest.class) |
| .enableNeverClassInliningAnnotations() |
| .enableInliningAnnotations() |
| .addKeepMainRule(MAIN) |
| .addKeepRules( |
| "-assumenosideeffects class * implements " + TestLogger.class.getTypeName() + " {", |
| " void info(...);", |
| "}") |
| .noMinification() |
| .setMinApi(parameters.getRuntime()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutput(EXPECTED) |
| .inspect(this::inspect); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject main = inspector.clazz(MAIN); |
| assertThat(main, isPresent()); |
| |
| MethodSubject mainMethod = main.mainMethod(); |
| assertThat(mainMethod, isPresent()); |
| assertTrue( |
| mainMethod.streamInstructions().noneMatch( |
| i -> i.isInvoke() && i.getMethod().name.toString().equals("info"))); |
| |
| assertTrue( |
| mainMethod.streamInstructions().noneMatch( |
| i -> i.isInvoke() |
| && i.getMethod().holder.toDescriptorString().contains("StringBuilder"))); |
| } |
| |
| interface TestLogger { |
| void info(String tag, String message); |
| } |
| |
| @NeverClassInline |
| static class TestLoggerImplementer implements TestLogger { |
| |
| @NeverInline |
| @Override |
| public void info(String tag, String message) { |
| System.out.println(tag + ": " + message); |
| } |
| } |
| |
| static class TestClassAfterAssumenosideeffects { |
| public static void main(String... args) { |
| TestLogger instance = new TestLoggerImplementer(); |
| StringBuilder builder = new StringBuilder(); |
| builder.append("Hello"); |
| builder.append(args.length == 0 ? ", R8" : args[0]); |
| instance.info("TAG", builder.toString()); |
| System.out.println("The end"); |
| } |
| } |
| } |