public void EvalStackProveICanGetAndSetConstant()
{
// Arrange
EvalStack my_stack = new EvalStack();
object[] constant_exp = { 'A', '=', 2 };
char constantKey = 'A';
// Act
my_stack.SetConstant(constant_exp);
int actual = my_stack.GetConstant(constantKey);
int expected = 2;
// Assert
Assert.AreEqual(actual, expected);
}
public void ExpressionProveICanDoMathWithConst()
{
// Arrange
Expression my_expression = new Expression();
EvalStack eval_stack = new EvalStack();
Evaluate evaluate = new Evaluate();
eval_stack.SetConstant(new object[] { 'M', '=', 8 });
string test_expression = "M * 4";
object[] test_object = my_expression.Parse(test_expression, eval_stack);
//Act
double actual = evaluate.EvaluateExpression(test_object, eval_stack);
double expected = 32;
// Assert
Assert.AreEqual(actual, expected);
}