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/*
* Copyright (C) 2022, Tencent.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.io;
import static org.eclipse.jgit.internal.storage.io.CancellableDigestOutputStream.BYTES_TO_WRITE_BEFORE_CANCEL_CHECK;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.assertTrue;
import java.io.InterruptedIOException;
import org.eclipse.jgit.lib.ProgressMonitor;
import org.eclipse.jgit.util.io.NullOutputStream;
import org.junit.Test;
public class CancellableDigestOutputStreamTest {
private static class CancelledTestMonitor implements ProgressMonitor {
private boolean cancelled = false;
public void setCancelled(boolean cancelled) {
this.cancelled = cancelled;
}
@Override
public void start(int totalTasks) {
// not implemented
}
@Override
public void beginTask(String title, int totalWork) {
// not implemented
}
@Override
public void update(int completed) {
// not implemented
}
@Override
public void endTask() {
// not implemented
}
@Override
public boolean isCancelled() {
return cancelled;
}
@Override
public void showDuration(boolean enabled) {
// not implemented
}
}
@Test
public void testCancelInProcess() throws Exception {
CancelledTestMonitor m = new CancelledTestMonitor();
try (CancellableDigestOutputStream out = new CancellableDigestOutputStream(
m, NullOutputStream.INSTANCE)) {
byte[] KB = new byte[1024];
int triggerCancelWriteCnt = BYTES_TO_WRITE_BEFORE_CANCEL_CHECK
/ KB.length;
for (int i = 0; i < triggerCancelWriteCnt + 1; i++) {
out.write(KB);
}
assertTrue(out.length() > BYTES_TO_WRITE_BEFORE_CANCEL_CHECK);
m.setCancelled(true);
for (int i = 0; i < triggerCancelWriteCnt - 1; i++) {
out.write(KB);
}
long lastLength = out.length();
assertThrows(InterruptedIOException.class, () -> {
out.write(1);
});
assertEquals(lastLength, out.length());
assertThrows(InterruptedIOException.class, () -> {
out.write(new byte[1]);
});
assertEquals(lastLength, out.length());
}
}
@Test
public void testTriggerCheckAfterSingleBytes() throws Exception {
CancelledTestMonitor m = new CancelledTestMonitor();
try (CancellableDigestOutputStream out = new CancellableDigestOutputStream(
m, NullOutputStream.INSTANCE)) {
byte[] bytes = new byte[BYTES_TO_WRITE_BEFORE_CANCEL_CHECK + 1];
m.setCancelled(true);
assertThrows(InterruptedIOException.class, () -> {
out.write(bytes);
});
assertEquals(BYTES_TO_WRITE_BEFORE_CANCEL_CHECK, out.length());
}
}
}
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