public void EvaluateProveICanSubtractTerms()
{
// Arrange
Evaluate subtraction_exp = new Evaluate();
EvalStack last_values = new EvalStack();
object[] test_expression = { 9, '-', 3 };
// Act
double actual = subtraction_exp.EvaluateExpression(test_expression, last_values);
double expected = 6;
// Assert
Assert.AreEqual(expected, actual);
}
public void EvaluateProveICanGetModulo()
{
// Arrange
Evaluate modulus_exp = new Evaluate();
EvalStack last_values = new EvalStack();
object[] test_expression = { 10, '%', 3 };
// Act
double actual = modulus_exp.EvaluateExpression(test_expression, last_values);
double expected = 1;
// Assert
Assert.AreEqual(expected, actual);
}
public void EvaluateProveICanAddTerms()
{
// Arrange
Evaluate addition_exp = new Evaluate();
EvalStack last_values = new EvalStack();
object[] test_expression = { 5, '+', 6 };
// Act
double actual = addition_exp.EvaluateExpression(test_expression, last_values);
double expected = 11;
// Assert
Assert.AreEqual(expected, actual);
}
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);
}