private void instantiateWriter() throws IOException {
out =
new PrintWriter(
new OutputStreamWriter(fileSystem.openAsOutputStream(file, true), encoding));
for (Runnable trigger : onRotation) {
trigger.run();
}
}
@Test
public void shouldReadALogHeaderFromAFile() throws IOException {
// given
final FileSystemAbstraction fs = new DefaultFileSystemAbstraction();
final File file = File.createTempFile("ReadLogHeader", getClass().getSimpleName());
final ByteBuffer buffer = ByteBuffer.allocate(LOG_HEADER_SIZE);
buffer.putLong(encodeLogVersion(expectedLogVersion));
buffer.putLong(expectedTxId);
try (OutputStream stream = fs.openAsOutputStream(file, false)) {
stream.write(buffer.array());
}
// when
final LogHeader result = readLogHeader(fs, file);
// then
assertEquals(new LogHeader(CURRENT_LOG_VERSION, expectedLogVersion, expectedTxId), result);
}
