static void Main(string[] args)
{
UI ui = UI.Instance;
ui.DisplayLogo(false);
ui.GreetUser();
ui.IntroduceEngines();
ConsoleKeyInfo keyInfo;
do
{
int option = ui.ChooseEngine();
IMathExpressionSolver solver = GetEngine(option);
string expression = ui.GetUserMathExpression();
try
{
double result = solver.Solve(expression);
ui.PresentResult(result);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
ui.EndMessage();
keyInfo = Console.ReadKey();
} while (keyInfo.Key != ConsoleKey.Escape);
}
public void TestComplexExpression()
{
IMathExpressionSolver solver = ExpressionSolverFactory.GetSolver(Solver.CSharpMathSolver);
string expression = "2+1*3/2+12";
double result = solver.Solve(expression);
Assert.AreEqual(15.5d, result);
}
public void TestDivision()
{
IMathExpressionSolver solver = ExpressionSolverFactory.GetSolver(Solver.CSharpMathSolver);
string expression = "25/2";
double result = solver.Solve(expression);
Assert.AreEqual(12.5d, result);
}
public void TestMultiplication()
{
IMathExpressionSolver solver = ExpressionSolverFactory.GetSolver(Solver.CSharpMathSolver);
string expression = "20*5";
double result = solver.Solve(expression);
Assert.AreEqual(100d, result);
}
public void TestSubtraction()
{
IMathExpressionSolver solver = ExpressionSolverFactory.GetSolver(Solver.CSharpMathSolver);
string expression = "10-1";
double result = solver.Solve(expression);
Assert.AreEqual(9d, result);
}
public void TestException()
{
IMathExpressionSolver solver = ExpressionSolverFactory.GetSolver(Solver.CSharpMathSolver);
string expression = "assadsad";
Assert.ThrowsException <ArgumentException>(() =>
{
double result = solver.Solve(expression);
});
}
public void TestExpressionMathSolverCreation()
{
IMathExpressionSolver solver = ExpressionSolverFactory.GetSolver(Solver.ExpressionMathSolver);
Assert.IsInstanceOfType(solver, typeof(ExpressionMathSolver));
}
