public void ConstantTestGetExpressionWithOtherConstants()
{
Constant constant = new Constant();
string input = "x = 12 + 12";
constant.ChangeExpression(input);
constant.GetExpression();
constant.ChangeExpression("y = x + 2");
int expected = 26;
Assert.AreEqual(expected, constant.GetExpression());
}
public void ConstantTestGetExpressionWithIncorrectValues()
{
string input = "x = y + 1";
Constant constant = new Constant(input);
int expected = 5;
Assert.AreEqual(expected, constant.GetExpression());
}
public void ConstantTestGetExpressionWithOneThingOneRightSide()
{
Constant constant = new Constant();
string input = "x = 12";
constant.ChangeExpression(input);
int expected = 12;
Assert.AreEqual(expected, constant.GetExpression());
}
public void ConstantTestGetExpression()
{
string input = "x = 12 + 12";
Constant constant = new Constant();
constant.ChangeExpression(input);
int expected = 24;
Assert.AreEqual(expected, constant.GetExpression());
}
static void Main(string[] args)
{
Console.WriteLine("Calculator");
int count = 0;
string input;
Constant constant = new Constant();
while (true)
{
Console.Write("[{0}]> ", count);
input = Console.ReadLine();
if(input == "exit" || input == "quit")
{
Console.WriteLine("loggin out");
break;
}
ProcessInput PI = new ProcessInput(input);
try
{
Evaluate ev = new Evaluate(PI.GetFirstInputNumber(), PI.GetOperator(), PI.GetSecondInputNumber());
Console.WriteLine(" = " + ev.Operate());
}
catch
{
constant.ChangeExpression(input);
try
{
Console.WriteLine(constant.GetExpression());
}
catch
{
Console.WriteLine("Error! Try again . . .");
}
}
count++;
}
}
public void ConstantTestIfReturnsValueOfConstant()
{
Constant constant = new Constant();
constant.AddToConstants('x', 12);
constant.ChangeExpression("x");
Assert.AreEqual(12, constant.GetExpression());
}