blob: 570c1629143931f24234574e7f427e68a98c9faf [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.deadcode;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertTrue;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
import com.android.tools.r8.utils.codeinspector.ClassSubject;
import com.android.tools.r8.utils.codeinspector.CodeInspector;
import com.android.tools.r8.utils.codeinspector.InstructionSubject;
import com.android.tools.r8.utils.codeinspector.MethodSubject;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
@RunWith(Parameterized.class)
public class RemoveDeadBuildersTest extends TestBase {
private final TestParameters parameters;
@Parameters(name = "{0}")
public static TestParametersCollection data() {
return getTestParameters().withAllRuntimes().build();
}
public RemoveDeadBuildersTest(TestParameters parameters) {
this.parameters = parameters;
}
@Test
public void test() throws Exception {
CodeInspector inspector =
testForR8(parameters.getBackend())
.addProgramClasses(TestClass.class)
.addKeepMainRule(TestClass.class)
.compile()
.inspector();
ClassSubject classSubject = inspector.clazz(TestClass.class);
assertThat(classSubject, isPresent());
MethodSubject methodSubject = classSubject.mainMethod();
assertThat(methodSubject, isPresent());
assertTrue(methodSubject.streamInstructions().noneMatch(InstructionSubject::isNewInstance));
}
static class TestClass {
public static void main(String[] args) {
new StringBuffer();
new StringBuffer("Hello world!");
new StringBuffer((CharSequence) "Hello world!");
new StringBuffer(42);
new StringBuilder();
new StringBuilder("Hello world!");
new StringBuilder((CharSequence) "Hello world!");
new StringBuilder(42);
}
}
}