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JUnitPlatformFeature.java
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JUnitPlatformFeature.java
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/*
* Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
* freely licensable by each licensor hereunder covering either (i) the
* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.graalvm.junit.platform;
import org.graalvm.junit.platform.config.core.PluginConfigProvider;
import org.graalvm.nativeimage.ImageSingletons;
import org.graalvm.nativeimage.hosted.Feature;
import org.graalvm.nativeimage.hosted.RuntimeClassInitialization;
import org.junit.platform.engine.DiscoverySelector;
import org.junit.platform.engine.discovery.DiscoverySelectors;
import org.junit.platform.engine.discovery.UniqueIdSelector;
import org.junit.platform.engine.support.descriptor.ClassSource;
import org.junit.platform.launcher.Launcher;
import org.junit.platform.launcher.LauncherDiscoveryRequest;
import org.junit.platform.launcher.TestIdentifier;
import org.junit.platform.launcher.TestPlan;
import org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder;
import org.junit.platform.launcher.core.LauncherFactory;
import org.junit.platform.launcher.listeners.UniqueIdTrackingListener;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.HashSet;
import java.util.List;
import java.util.Optional;
import java.util.ServiceLoader;
import java.util.function.Consumer;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@SuppressWarnings("unused")
public final class JUnitPlatformFeature implements Feature {
public final boolean debug = System.getProperty("debug") != null;
private static final NativeImageConfigurationImpl nativeImageConfigImpl = new NativeImageConfigurationImpl();
private final ServiceLoader<PluginConfigProvider> extensionConfigProviders = ServiceLoader.load(PluginConfigProvider.class);
@Override
public void duringSetup(DuringSetupAccess access) {
forEachProvider(p -> p.onLoad(nativeImageConfigImpl));
}
@Override
public void beforeAnalysis(BeforeAnalysisAccess access) {
RuntimeClassInitialization.initializeAtBuildTime(NativeImageJUnitLauncher.class);
List<Path> classpathRoots = access.getApplicationClassPath();
List<? extends DiscoverySelector> selectors = getSelectors(classpathRoots);
Launcher launcher = LauncherFactory.create();
TestPlan testplan = discoverTestsAndRegisterTestClassesForReflection(launcher, selectors);
ImageSingletons.add(NativeImageJUnitLauncher.class, new NativeImageJUnitLauncher(launcher, testplan));
}
private List<? extends DiscoverySelector> getSelectors(List<Path> classpathRoots) {
try {
Path outputDir = Paths.get(System.getProperty(UniqueIdTrackingListener.OUTPUT_DIR_PROPERTY_NAME));
String prefix = System.getProperty(UniqueIdTrackingListener.OUTPUT_FILE_PREFIX_PROPERTY_NAME,
UniqueIdTrackingListener.DEFAULT_OUTPUT_FILE_PREFIX);
List<UniqueIdSelector> selectors = readAllFiles(outputDir, prefix)
.map(DiscoverySelectors::selectUniqueId)
.collect(Collectors.toList());
if (!selectors.isEmpty()) {
System.out.printf(
"[junit-platform-native] Running in 'test listener' mode using files matching pattern [%s*] "
+ "found in folder [%s] and its subfolders.%n",
prefix, outputDir.toAbsolutePath());
return selectors;
}
} catch (Exception ex) {
debug("Failed to read UIDs from UniqueIdTrackingListener output files: " + ex.getMessage());
}
System.out.println("[junit-platform-native] Running in 'test discovery' mode. Note that this is a fallback mode.");
if (debug) {
classpathRoots.forEach(entry -> debug("Selecting classpath root: " + entry));
}
return DiscoverySelectors.selectClasspathRoots(new HashSet<>(classpathRoots));
}
/**
* Use the JUnit Platform Launcher to discover tests and register classes
* for reflection.
*/
private TestPlan discoverTestsAndRegisterTestClassesForReflection(Launcher launcher,
List<? extends DiscoverySelector> selectors) {
LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
.selectors(selectors)
.build();
TestPlan testPlan = launcher.discover(request);
testPlan.getRoots().stream()
.flatMap(rootIdentifier -> testPlan.getDescendants(rootIdentifier).stream())
.map(TestIdentifier::getSource)
.filter(Optional::isPresent)
.map(Optional::get)
.filter(ClassSource.class::isInstance)
.map(ClassSource.class::cast)
.map(ClassSource::getJavaClass)
.forEach(this::registerTestClassForReflection);
return testPlan;
}
private void registerTestClassForReflection(Class<?> clazz) {
debug("Registering test class for reflection: %s", clazz.getName());
nativeImageConfigImpl.registerAllClassMembersForReflection(clazz);
forEachProvider(p -> p.onTestClassRegistered(clazz, nativeImageConfigImpl));
Class<?> superClass = clazz.getSuperclass();
if (superClass != null && superClass != Object.class) {
registerTestClassForReflection(superClass);
}
}
private void forEachProvider(Consumer<PluginConfigProvider> consumer) {
for (PluginConfigProvider provider : extensionConfigProviders) {
consumer.accept(provider);
}
}
public static void debug(String format, Object... args) {
if (debug()) {
System.out.printf("[Debug] " + format + "%n", args);
}
}
public static boolean debug() {
return ImageSingletons.lookup(JUnitPlatformFeature.class).debug;
}
private Stream<String> readAllFiles(Path dir, String prefix) throws IOException {
return findFiles(dir, prefix).map(outputFile -> {
try {
return Files.readAllLines(outputFile);
} catch (IOException ex) {
throw new UncheckedIOException(ex);
}
}).flatMap(List::stream);
}
private static Stream<Path> findFiles(Path dir, String prefix) throws IOException {
if (!Files.exists(dir)) {
return Stream.empty();
}
return Files.find(dir, Integer.MAX_VALUE,
(path, basicFileAttributes) -> (basicFileAttributes.isRegularFile()
&& path.getFileName().toString().startsWith(prefix)));
}
}