public void testWritableChannelAppend() throws Exception {
writeToFile("/append.txt", "Initial text.", 3);
WritableGridFileChannel channel = fs.getWritableChannel("/append.txt", true);
try {
channel.write(ByteBuffer.wrap("Appended text.".getBytes()));
} finally {
channel.close();
}
assertEquals(getContents("/append.txt"), "Initial text.Appended text.");
}
public void testWritableChannel() throws Exception {
WritableGridFileChannel channel = fs.getWritableChannel("/channelTest.txt", false, 10);
try {
assertTrue(channel.isOpen());
channel.write(ByteBuffer.wrap("This file spans multiple chunks.".getBytes()));
} finally {
channel.close();
}
assertFalse(channel.isOpen());
assertEquals(getContents("/channelTest.txt"), "This file spans multiple chunks.");
}
public void testReadLoop() throws Exception {
WritableGridFileChannel wgfc = fs.getWritableChannel("/readTest.txt", false, 100);
try {
assertTrue(wgfc.isOpen());
wgfc.write(ByteBuffer.wrap("This tests read loop.".getBytes()));
} finally {
wgfc.close();
}
ReadableGridFileChannel rgfc = fs.getReadableChannel("/readTest.txt");
try {
assertTrue(
"This tests read loop.".equals(new String(toBytes(Channels.newInputStream(rgfc)))));
} finally {
rgfc.close();
}
}
