次の JUnit テストがあります。
@Test
public void testRunLocalhost() throws IOException, InterruptedException {
// Start an AnnouncerThread
final AnnouncerThread announcer = new AnnouncerThread();
announcer.start();
// Create the socket and listen on the right port.
final DatagramSocket socket = new DatagramSocket();
assert(socket != null);
// Create a packet to send.
final DatagramPacket packet = new DatagramPacket(new byte[0], 0, InetAddress.getByName(AnnouncerThread.GROUP), AnnouncerThread.PORT);
assert(packet != null);
// Send the packet.
socket.send(packet);
// Listen for the IP from the server.
final DatagramPacket receivedPacket = new DatagramPacket(new byte[256], 256);
socket.setSoTimeout(2000); // Only wait 2 seconds.
socket.receive(receivedPacket);
socket.close();
// Get localhost's address.
final InetAddress localhost = InetAddress.getLocalHost();
assert(localhost != null);
// Compare the receive IP to the localhost IP.
final String receivedIP = new String(receivedPacket.getData());
if (!receivedIP.startsWith(localhost.getHostAddress())) {
fail("Received IP: '" + receivedIP + "' not the same as localhost: '" + localhost.getHostAddress() + "'");
}
announcer.shutdown();
announcer.join();
}
また、PMD は次の違反を示します。
Found 'UR'-anomaly for variable 'socket' (lines '36'-'36').
Found 'UR'-anomaly for variable 'localhost' (lines '36'-'36').
Found 'UR'-anomaly for variable 'packet' (lines '36'-'36').
私のファイルの 36 行目は、メソッドが定義されている行です。
public void testRunLocalhost() throws IOException, InterruptedException {
違反が何を言っているのかわかりません。これら 3 つの変数はどこで定義すればよいでしょうか。AnnouncerThread が違反に含まれていないのはなぜですか? 宣言を無駄に並べ替えようとしたのと同じ方法で宣言されています。