private static FileChannel channel(RegularFile file, OpenOption... options) throws IOException {
return new JimfsFileChannel(
file,
Options.getOptionsForChannel(ImmutableSet.copyOf(options)),
new FileSystemState(Runnables.doNothing()));
}
@Test
public void testFileTimeUpdates() throws IOException {
RegularFile file = regularFile(10);
FileChannel channel =
new JimfsFileChannel(
file,
ImmutableSet.<OpenOption>of(READ, WRITE),
new FileSystemState(Runnables.doNothing()));
// accessed
long accessTime = file.getLastAccessTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.read(ByteBuffer.allocate(10));
assertNotEquals(accessTime, file.getLastAccessTime());
accessTime = file.getLastAccessTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.read(ByteBuffer.allocate(10), 0);
assertNotEquals(accessTime, file.getLastAccessTime());
accessTime = file.getLastAccessTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.read(new ByteBuffer[] {ByteBuffer.allocate(10)});
assertNotEquals(accessTime, file.getLastAccessTime());
accessTime = file.getLastAccessTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.read(new ByteBuffer[] {ByteBuffer.allocate(10)}, 0, 1);
assertNotEquals(accessTime, file.getLastAccessTime());
accessTime = file.getLastAccessTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.transferTo(0, 10, new ByteBufferChannel(10));
assertNotEquals(accessTime, file.getLastAccessTime());
// modified
long modifiedTime = file.getLastModifiedTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.write(ByteBuffer.allocate(10));
assertNotEquals(modifiedTime, file.getLastModifiedTime());
modifiedTime = file.getLastModifiedTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.write(ByteBuffer.allocate(10), 0);
assertNotEquals(modifiedTime, file.getLastModifiedTime());
modifiedTime = file.getLastModifiedTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.write(new ByteBuffer[] {ByteBuffer.allocate(10)});
assertNotEquals(modifiedTime, file.getLastModifiedTime());
modifiedTime = file.getLastModifiedTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.write(new ByteBuffer[] {ByteBuffer.allocate(10)}, 0, 1);
assertNotEquals(modifiedTime, file.getLastModifiedTime());
modifiedTime = file.getLastModifiedTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.truncate(0);
assertNotEquals(modifiedTime, file.getLastModifiedTime());
modifiedTime = file.getLastModifiedTime();
Uninterruptibles.sleepUninterruptibly(2, MILLISECONDS);
channel.transferFrom(new ByteBufferChannel(10), 0, 10);
assertNotEquals(modifiedTime, file.getLastModifiedTime());
}