public void BracketsAreIncorrect()
{
string expr1 = "1+2)=";
string expr2 = "(1+2=";
string expr3 = "(11(-7))=";
string expr4 = "(11'(8*8)/6)=";
string expr5 = "11,8(*(8,4/6))=";
Action action;
action = (() => MathParser.GetRes(expr1));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr2));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr3));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr4));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr5));
Assert.ThrowsException <ArgumentException>(action);
}
public void CorrectExprWithBrackets()
{
string expr1 = "1+((2/2)-11*8/6+2)*11=";
string expr2 = "11*(8/6)=";
string expr3 = "(11-7)*8/6=";
string expr4 = "(11.8*8)/6=";
string expr5 = "11,8*(8,4/6)=";
string expr6 = "11+(-(-7))=";
double res1 = 1 + ((2.0 / 2) - 11.0 * 8.0 / 6 + 2) * 11;
double res2 = 11 * (8.0 / 6);
double res3 = (11 - 7) * 8.0 / 6;
double res4 = (11.8 * 8.0) / 6;
double res5 = 11.8 * (8.4 / 6);
double res6 = 11 + (-(-7));
Assert.IsTrue(MathParser.GetRes(expr1) == res1);
Assert.IsTrue(MathParser.GetRes(expr2) == res2);
Assert.IsTrue(MathParser.GetRes(expr3) == res3);
Assert.IsTrue(MathParser.GetRes(expr4) == res4);
Assert.IsTrue(MathParser.GetRes(expr5) == res5);
Assert.IsTrue(MathParser.GetRes(expr6) == res6);
}
public void CorrectExprWithoutBrackets()
{
string expr1 = "1+2/2-11*8/6+2*11=";
string expr2 = "11*8/6=";
string expr3 = "11-7*8/6=";
string expr4 = "11.8*8/6=";
string expr5 = "11,8*8,4/6=";
string expr6 = "6+2/11";
double res1 = 1 + 2.0 / 2 - 11.0 * 8.0 / 6 + 2 * 11;
double res2 = 11 * 8.0 / 6;
double res3 = 11 - 7 * 8.0 / 6;
double res4 = 11.8 * 8.0 / 6;
double res5 = 11.8 * 8.4 / 6;
double res6 = 6 + 2.0 / 11;
Assert.IsTrue(MathParser.GetRes(expr1) == res1);
Assert.IsTrue(MathParser.GetRes(expr2) == res2);
Assert.IsTrue(MathParser.GetRes(expr3) == res3);
Assert.IsTrue(MathParser.GetRes(expr4) == res4);
Assert.IsTrue(MathParser.GetRes(expr5) == res5);
Assert.IsTrue(MathParser.GetRes(expr6) == res6);
}
public void InputIsInvalid()
{
string expr1 = "6+2*/11=";
string expr2 = "*8/6=";
string expr3 = "11(7)*8=";
string expr4 = "8=/6=";
string expr5 = "11,8(8,4/6)=";
string expr6 = "11.8*8=6=";
string expr7 = "d*8=";
string expr8 = "11,8(*8,4/6)=";
string expr9 = "1+2*=";
string expr10 = "1+2*";
Action action;
action = (() => MathParser.GetRes(expr1));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr2));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr3));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr4));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr5));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr6));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr7));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr8));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr9));
Assert.ThrowsException <ArgumentException>(action);
action = (() => MathParser.GetRes(expr10));
Assert.ThrowsException <ArgumentException>(action);
}