Hi,
I'm able to run the unit test in org.h2.test.unit.TestFileSystem.java
without any problems (in H2 version 1.3.174).
However, I'm unable to understand why the 2nd AssertThrows in the code
below (around the call to truncate) is working at all
private void testSimple(final String fsBase) throws Exception {
...
channel = FileUtils.open(fsBase + "/test", "r");
final byte[] test = new byte[10000];
FileUtils.readFully(channel, ByteBuffer.wrap(test, 0, 10000));
assertEquals(buffer, test);
final FileChannel fc = channel;
new AssertThrows(IOException.class) {
@Override
public void test() throws Exception {
fc.write(ByteBuffer.wrap(test, 0, 10));
}
};
new AssertThrows(IOException.class) {
@Override
public void test() throws Exception {
fc.truncate(10);
}
};
...
>From the JDK documentation,
>FileChannel.truncate<http://docs.oracle.com/javase/7/docs/api/java/nio/channels/FileChannel.html#truncate(long)>
> on
a readonly channel (or, a channel with a readonly underlying file) should
result in a NonWritableChannelException, and not an IOException. In the
following program that I wrote...
// size of /tmp/foo = 4 bytes
RandomAccessFile raf = new RandomAccessFile("/tmp/foo", "r");
try {
java.nio.channels.FileChannel c = raf.getChannel();
c.truncate(1);
} catch(Exception e) {
e.printStackTrace();
}
... I do indeed get a NonWritableChannelException.
So, how come the 2nd AssertThrows around truncate in the H2 unit test is
working when it shouldn't?
Stumped,
/HS
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