public void EvaluateCanReturnExecuteCommand()
{
Parse parse = new Parse("1 + 5");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Parse parseTwo = new Parse("lastq");
eval.ParsedInput = parseTwo;
eval.Execute();
Assert.AreEqual("1 + 5", eval.Answer);
}
public void EvaluateCanExecuteExpressionWithConstants()
{
Parse parse = new Parse("q= 7");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Parse parseTwo = new Parse("q + 5");
eval.ParsedInput = parseTwo;
eval.Execute();
Assert.AreEqual("12", eval.Answer);
}
public void EvaluateCanExecuteBasicOperation()
{
Parse parse = new Parse("1 + 5");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Assert.AreEqual("6", eval.Answer);
}
public void EvaluateCanAssignConstant()
{
Parse parse = new Parse("q= 7");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Assert.AreEqual("Stored: q = 7", eval.Answer);
}
public void EvaluateCanSubstitueConstants()
{
Parse parse = new Parse("q= 7");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Parse parseTwo = new Parse("q + 5");
eval.ParsedInput = parseTwo;
eval.SubstituteConstants();
Assert.AreEqual(7, eval.ParsedInput.FirstNumArg);
}
static void Main(string[] args)
{
int count = 0;
string prompt = $"[{count.ToString()}]> ";
string answer = "";
Evaluate eval = new Evaluate();
while (answer != "exit")
{
Console.Write(prompt);
string response = Console.ReadLine();
Parse parse = new Parse(response);
eval.ParsedInput = parse;
eval.Execute();
Console.WriteLine($" = {eval.Answer}");
answer = eval.Answer;
count++;
prompt = $"[{count.ToString()}]> ";
}
Console.WriteLine("Bye!!");
}