blob: 27879321709cbf769f58eb49c5ae0fffec098a7b [file] [log] [blame]
// 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");
}
}
}