Я пытаюсь создать простую программу чата.
Изначально я написал этот код, чтобы сохранить входящее сообщение от пользователя в текстовый файл, в зависимости от данной команды, но я не имею никакого представления о тестировании. стратегия. Должен ли я написать тест только для runUi()? Поскольку этот метод уже содержит оператор switch и внутри него вызываются другие методы, или я должен написать также для всех других методов?
public class CmdLineUI implements ChatUI, Chat {
public static final String WRITE = "write";
public static final String READ = "read";
public static final String EXIT = "exit";
public static final String ERRORMESSAGE = "unknown command";
private final PrintStream consoleOutput;
private final BufferedReader userInput;
public CmdLineUI(PrintStream os, InputStream is) {
this.consoleOutput = os;
this.userInput = new BufferedReader(new InputStreamReader(is));
}
public static void main(String[] args) throws Exception {
PrintStream os = System.out;
os.println("***Welcome to The ChatSystem: input: write for chatting ,"
+ "\n for Reading the messages input: read ,for closing Chat input: exit ***");
CmdLineUI userCmd = new CmdLineUI(os, System.in);
userCmd.runUi(System.in, os);
}
private String[] readCommands() throws Exception {
String[] result = new String[1];
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
String commandLinString = null;
String command = null;
try {
System.out.println("> ");
commandLinString = br.readLine();
StringTokenizer st = new StringTokenizer(commandLinString);
command = st.nextToken().trim();
// msg = st.nextToken();
System.out.println("command :" + command);
} catch (IOException e) {
System.out.println("Exception when reading from comman line" + e.getLocalizedMessage());
}
result[0] = command;
// result[1] = msg;
return result;
}
@Override
public void writeMessage(String message) throws Exception {
System.out.println("Start with Writing mood:");
try {
File file = new File("/home/sami/Desktop/file.txt");
InputStreamReader inputStreamReader = new InputStreamReader(System.in); // A stream for reading from the
// console
BufferedReader bufferedReader = new BufferedReader(inputStreamReader); // Connect InputStreamReader to a
// BufferedReader
FileWriter fileReader = new FileWriter(file); // A stream that connects to the text file
BufferedWriter bufferedWriter = new BufferedWriter(fileReader); // Connect the FileWriter to the
// BufferedWriter
String line;
boolean continuee = true;
while (!(line = bufferedReader.readLine()).equals("stop")) {
continuee = false;
bufferedWriter.write(line);
}
// Close the stream
bufferedWriter.close();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void readMessage() throws Exception {
System.out.println("start with reading mood:");
File file = new File("/home/sami/Desktop/file.txt");
FileInputStream fileinputstream = new FileInputStream(file);
try {
int oneByte;
while ((oneByte = fileinputstream.read()) != -1) {
System.out.write(oneByte);
}
System.out.flush();
} catch (Exception ex) {
ex.getMessage();
}
fileinputstream.close();
}
@Override
public void runUi(InputStream inp, OutputStream outp) throws Exception {
File file = new File("/home/sami/Desktop/file.txt");
FileReader filereader = new FileReader(file);
BufferedReader br = new BufferedReader(filereader);
// CmdLineUI obj = new CmdLineUI(consoleOutput);
PrintStream ps = new PrintStream(outp);
boolean again = true;
while (again) {
String[] commandMsg = readCommands();
String command = commandMsg[0];
switch (command) {
case WRITE:
writeMessage(br.readLine());
again = true;
break;
case READ:
readMessage();
again = true;
break;
case EXIT:
again = false;
break;
default:
ps.println(ERRORMESSAGE);
}
}
}
}
, и я создал эти два интерфейса, вот первый из них
public interface ChatUI {
public void runUi (InputStream inp, OutputStream outp) throws Exception;
}
второй интерфейс
public interface Chat {
//First Method
public void writeMessage(String message)throws Exception;
// Second Method
public void readMessage()throws Exception;
}