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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.testrunner;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import static java.util.stream.Collectors.toUnmodifiableList;
/**
* @author jonmv
*/
public class AggregateTestRunner implements TestRunner {
static final TestRunner noRunner = new TestRunner() {
final LogRecord record = new LogRecord(Level.WARNING, "No tests were found");
@Override public Collection<LogRecord> getLog(long after) { return List.of(record); }
@Override public Status getStatus() { return Status.FAILURE; }
@Override public CompletableFuture<?> test(Suite suite, byte[] config) { return CompletableFuture.completedFuture(null); }
@Override public boolean isSupported() { return true; }
};
private final List<TestRunner> wrapped;
private final AtomicInteger current = new AtomicInteger(-1);
private AggregateTestRunner(List<TestRunner> testRunners) {
this.wrapped = testRunners;
}
public static TestRunner of(Collection<TestRunner> testRunners) {
List<TestRunner> supported = testRunners.stream().filter(TestRunner::isSupported).collect(toUnmodifiableList());
return supported.isEmpty() ? noRunner : new AggregateTestRunner(supported);
}
@Override
public Collection<LogRecord> getLog(long after) {
ArrayList<LogRecord> records = new ArrayList<>();
for (int i = 0; i <= current.get() && i < wrapped.size(); i++)
records.addAll(wrapped.get(i).getLog(after));
return records;
}
@Override
public Status getStatus() {
if (current.get() == -1)
return Status.NOT_STARTED;
boolean failed = false;
for (int i = 0; i <= current.get(); i++) {
if (i == wrapped.size())
return failed ? Status.FAILURE : Status.SUCCESS;
switch (wrapped.get(i).getStatus()) {
case ERROR: return Status.ERROR;
case FAILURE: failed = true;
}
}
return Status.RUNNING;
}
@Override
public CompletableFuture<?> test(Suite suite, byte[] config) {
if (0 <= current.get() && current.get() < wrapped.size())
throw new IllegalStateException("Tests already running, should not attempt to start now");
current.set(-1);
CompletableFuture<?> aggregate = new CompletableFuture<>();
CompletableFuture<?> vessel = CompletableFuture.completedFuture(null);
runNext(suite, config, vessel, aggregate);
return aggregate;
}
private void runNext(Suite suite, byte[] config, CompletableFuture<?> vessel, CompletableFuture<?> aggregate) {
vessel.whenComplete((__, ___) -> {
int next = current.incrementAndGet();
if (next == wrapped.size())
aggregate.complete(null);
else
runNext(suite, config, wrapped.get(next).test(suite, config), aggregate);
});
}
@Override
public boolean isSupported() {
return wrapped.stream().anyMatch(TestRunner::isSupported);
}
@Override
public TestReport getReport() {
return wrapped.stream().map(TestRunner::getReport).filter(Objects::nonNull)
.reduce(AggregateTestRunner::merge).orElse(null);
}
static TestReport merge(TestReport first, TestReport second) {
return TestReport.builder()
.withAbortedCount(first.abortedCount + second.abortedCount)
.withFailedCount(first.failedCount + second.failedCount)
.withIgnoredCount(first.ignoredCount + second.ignoredCount)
.withSuccessCount(first.successCount + second.successCount)
.withTotalCount(first.totalCount + second.totalCount)
.withFailures(merged(first.failures, second.failures))
.withLogs(merged(first.logLines, second.logLines))
.build();
}
static <T> List<T> merged(List<T> first, List<T> second) {
ArrayList<T> merged = new ArrayList<>();
merged.addAll(first);
merged.addAll(second);
return merged;
}
}
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