public void runLoop() throws IOException {
while (true) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Welcome to supercalc");
System.out.println("enter command:");
String line = br.readLine();
if (line.equals("e")) {
System.out.println("good bye, have a nice day...");
break;
} else {
String[] args = line.split(" ");
if (args.length == 3) {
String opCode = args[0];
Integer op1 = Integer.parseInt(args[1]);
Integer op2 = Integer.parseInt(args[2]);
if (opCode.equals("+")) {
System.out.println("result: " + adder.add(op1, op2));
} else if (opCode.equals("-")) {
System.out.println("result: " + sub.subtract(op1, op2));
}
}
}
}
}
@Test
public void testSubtract() throws Exception {
assertEquals(obj.subtract(10, 10), 0);
}
