Unit Test For Infinite Loop

This is my java thread run method and i want to write unit test for this method. But with infinte loop i can not do it. It would be nice anyone can help me with this.

 public void run() {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        String line = null;
        boolean oneTime = true;
        loadDescription();
        while (true) {

            try {
                if (oneTime) {
                    System.out.println("press enter to get the console...............");
                    oneTime = false;
                }
                line = in.readLine();
                if (line != null) {
                    processInput(line);
                }

            } catch (Exception e) {
                logger.error("Error occurred while processing console");
                logger.error(e.getMessage(), e);
            }
        }
    }

this is loadDescription() method

private void loadDescription() {
        BufferedReader in = null;
        StringBuffer stringBuffer = null;
        String str = null;
        try {
            stringBuffer = new StringBuffer();
            in = new BufferedReader(new FileReader(IConstants.MANUAL_FILE));
            str = in.readLine();
            while (str != null) {
                stringBuffer.append(str + "\n");
                str = in.readLine();
            }
            dfixDescription = stringBuffer.toString();
        } catch (Exception e) {
            logger.error(e.getMessage(), e);  //To change body of catch statement use File | Settings | File Templates.
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (IOException e) {
                logger.error(e.getMessage(), e);  //To change body of catch statement use File | Settings | File Templates.
            }
        }
    }

and

private void processInput(String line) {
        line = line.trim();
        logger.info("Admin Message received: " + line);
        if ("?".equalsIgnoreCase(line) || "".equals(line)) {
              printDescription();
        } else if (line.toUpperCase().startsWith(AdminCommands.RELOAD)) {
            loadDescription();
            printDescription();
        } else if (line.toUpperCase().startsWith(AdminCommands.EXIT)) {
            adminManager.stopDFIXRouter();
            logger.debug("Closing Application.....");
            logger.debug("Closed.");
            System.exit(0);
        } else if (line.toUpperCase().startsWith(AdminCommands.RESET_OUT_SEQUENCE)) {
            try {
                String sessionIdentifier = line.split(",")[1].trim();
                int seqNo = Integer.parseInt((line.split(",")[2]).trim());
                adminManager.resetOutSequence(sessionIdentifier, seqNo);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);  //To change body of catch statement use File | Settings | File Templates.
            }
        } else if (line.toUpperCase().startsWith(AdminCommands.RESET_IN_SEQUENCE)) {
            try {
                String sessionIdentifier = line.split(",")[1].trim();
                int seqNo = Integer.parseInt((line.split(",")[2]).trim());
                adminManager.resetInSequence(sessionIdentifier, seqNo);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);  //To change body of catch statement use File | Settings | File Templates.
            }
        } else if (line.toUpperCase().startsWith(AdminCommands.CONNECT)) {
            String sessionIdentifier = line.split(",")[1].trim();
            adminManager.connectSession(sessionIdentifier);
        } else if (line.toUpperCase().startsWith(AdminCommands.DISCONNECT)) {
            String sessionIdentifier = line.split(",")[1].trim();
            adminManager.disconnectSession(sessionIdentifier);
        } else if (line.toUpperCase().startsWith(AdminCommands.ACTIVATE)) {
            adminManager.startDFIXRouter();
        } else if (line.toUpperCase().startsWith(AdminCommands.PASSIVATE)) {
            adminManager.stopDFIXRouter();
        } else if (line.toUpperCase().startsWith(AdminCommands.RUN_EOD)) {
            try {
                String sessionIdentifier = line.split(",")[1].trim();
                adminManager.runEod(sessionIdentifier);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);  //To change body of catch statement use File | Settings | File Templates.
            }
        } else if (line.toUpperCase().startsWith(AdminCommands.SHOW_STATUS)) {
            adminManager.showStatus();
        } else {
            System.out.println("Usage: type ? for help");
        }
        System.out.print(">");
    }

and these are related methods for run method. following is my test method

 @Test
    public void run_activate() throws Exception{

        String data = "activate";
        InputStream in = new ByteArrayInputStream(data.getBytes());
        System.setIn(in);
        PowerMockito.mockStatic(AdminManager.class);
        PowerMockito.when(AdminManager.getInstance()).thenReturn(adminManagerTest);
        Mockito.doNothing().when(adminManagerTest).startDFIXRouter();
        dfixrtrAdminTest.run();
        Mockito.verify(adminManagerTest, Mockito.times(1)).startDFIXRouter();

    }

what is wrong with this. When i run test method it will not stop and i can not verify that needed methods are invoked how to handle this.

You need to replace the code inside the infinite loop with a function.

You then write a unit test for that function.