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// 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.desugar.desugaredlibrary;
import com.android.tools.r8.LibraryDesugaringTestConfiguration;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.utils.BooleanUtils;
import com.android.tools.r8.utils.StringUtils;
import java.nio.file.Path;
import java.util.List;
import java.util.stream.IntStream;
import org.junit.Assume;
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 IterateTest extends DesugaredLibraryTestBase {
private final TestParameters parameters;
private final boolean shrinkDesugaredLibrary;
private static final String EXPECTED_OUTPUT = StringUtils.lines("1");
@Parameters(name = "{1}, shrinkDesugaredLibrary: {0}")
public static List<Object[]> data() {
return buildParameters(
BooleanUtils.values(),
getTestParameters().withAllRuntimes().withAllApiLevelsAlsoForCf().build());
}
public IterateTest(boolean shrinkDesugaredLibrary, TestParameters parameters) {
this.shrinkDesugaredLibrary = shrinkDesugaredLibrary;
this.parameters = parameters;
}
@Test
public void testIterateD8Cf() throws Exception {
// Only test without shrinking desugared library.
Assume.assumeFalse(shrinkDesugaredLibrary);
// Use D8 to desugar with Java classfile output.
Path jar =
testForD8(Backend.CF)
.addInnerClasses(IterateTest.class)
.setMinApi(parameters.getApiLevel())
.enableCoreLibraryDesugaring(
LibraryDesugaringTestConfiguration.forApiLevel(parameters.getApiLevel()))
.compile()
.writeToZip();
if (parameters.getRuntime().isDex()) {
// Convert to DEX without desugaring and run.
testForD8()
.addProgramFiles(jar)
.setMinApi(parameters.getApiLevel())
.disableDesugaring()
.compile()
.addRunClasspathFiles(buildDesugaredLibrary(parameters.getApiLevel()))
.run(parameters.getRuntime(), Main.class)
.assertSuccessWithOutput(EXPECTED_OUTPUT);
} else {
// Run on the JVM with desugared library on classpath.
testForJvm()
.addProgramFiles(jar)
.addRunClasspathFiles(buildDesugaredLibraryClassFile(parameters.getApiLevel()))
.run(parameters.getRuntime(), Main.class)
.assertSuccessWithOutput(EXPECTED_OUTPUT);
}
}
@Test
public void testIterate() throws Exception {
if (parameters.isCfRuntime()) {
testForJvm()
.addInnerClasses(IterateTest.class)
.run(parameters.getRuntime(), Main.class)
.assertSuccessWithOutput(EXPECTED_OUTPUT);
return;
}
KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
testForD8()
.addLibraryFiles(getLibraryFile())
.addInnerClasses(IterateTest.class)
.setMinApi(parameters.getApiLevel())
.enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
.compile()
.addDesugaredCoreLibraryRunClassPath(
this::buildDesugaredLibrary,
parameters.getApiLevel(),
keepRuleConsumer.get(),
shrinkDesugaredLibrary)
.run(parameters.getRuntime(), Main.class)
.assertSuccessWithOutput(EXPECTED_OUTPUT);
}
static class Main {
public static void main(String[] args) {
IntStream iterate = IntStream.iterate(1, x -> x + 3);
System.out.println(iterate.findFirst().getAsInt());
}
}
}