public void SomePositiveTests()
{
var exp = new ExpressionProcessor();
string sp1 = "1+2*(3)*(-5)";
string sp2 = "2+(6+1)*2/(1-2*4)";
string sp3 = "-5/(1-2*(5,5-5,5))";
exp.ComputeExpression(sp1);
Assert.True(exp.GetErrorSize() == 0);
Assert.Equal(-29, exp.Result);
exp.ComputeExpression(sp2);
Assert.True(exp.GetErrorSize() == 0);
Assert.Equal(0, exp.Result);
exp.ComputeExpression(sp3);
Assert.True(exp.GetErrorSize() == 0);
Assert.Equal(-5, exp.Result);
}
public void SingleOperation()
{
// Arrange
var exp = new ExpressionProcessor();
string add = "1+5";
string minus = "1-5";
string multiply = "2*5";
string devision = "8/4";
// Act
double addResult = exp.ComputeExpression(add);
double minusResult = exp.ComputeExpression(minus);
double multiplyResult = exp.ComputeExpression(multiply);
double devisionResult = exp.ComputeExpression(devision);
// Assert
Assert.Equal(6.0, addResult);
Assert.Equal(-4.0, minusResult);
Assert.Equal(10.0, multiplyResult);
Assert.Equal(2.0, devisionResult);
}
public void PointedNumber()
{
// Arrange
string pointedNumbers = "0,5+(1,5*3)";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(pointedNumbers);
// Assert
Assert.True(exp.GetErrorSize() == 0);
Assert.Equal(5.0, exp.Result);
}
public void UnaryMinus()
{
// Arrange
string unaryMinus = "-5*(-5)";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(unaryMinus);
// Assert
Assert.True(exp.GetErrorSize() == 0);
Assert.Equal(25.0, exp.Result);
}
public void ToMuchOpeningBrakets()
{
// Arrange
string openingBrakets = "25+5*(25+23*(35+5)+(35";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(openingBrakets);
// Assert
Assert.True(exp.GetErrorSize() == 1);
Assert.Equal((new ErrorClass(ErrorType.OpeningBrakets, 2)).PrintError(), exp.GetError(0).PrintError());
}
public void NotEnoughOperators()
{
// Arrange
string notEnoughOperators = "24+52(242)+24";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(notEnoughOperators);
// Assert
Assert.True(exp.GetErrorSize() == 1);
Assert.Equal((new ErrorClass(ErrorType.NotEnoughOperators)).PrintError(), exp.GetError(0).PrintError());
}
public void UnsupportedSymbol()
{
// Arrange
string unsupportedSymbol = "25a+24v";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(unsupportedSymbol);
// Assert
Assert.True(exp.GetErrorSize() == 2);
Assert.Equal((new ErrorClass(ErrorType.UnsopportedSymbol, 'a', 3)).PrintError(), exp.GetError(0).PrintError());
Assert.Equal((new ErrorClass(ErrorType.UnsopportedSymbol, 'v', 7)).PrintError(), exp.GetError(1).PrintError());
}
public void SecondPoint()
{
// Arrange
string secondPoint = "25,23,23+245,23,13";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(secondPoint);
// Assert
Assert.True(exp.GetErrorSize() == 2);
Assert.Equal((new ErrorClass(ErrorType.SecondPoint, 6)).PrintError(), exp.GetError(0).PrintError());
Assert.Equal((new ErrorClass(ErrorType.SecondPoint, 16)).PrintError(), exp.GetError(1).PrintError());
}
public void NaNValues()
{
// Arrange
string NaN = "0/0";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(NaN);
// Assert
Assert.True(exp.GetErrorSize() == 0);
Assert.True(exp.FirstNaNPosition == 2);
Assert.True(Double.IsNaN(exp.Result));
}
public void UnexpectedOperator()
{
// Arrange
string unexpectedOperators = "*2+(/4)+(-5)+(5*)+*5";
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(unexpectedOperators);
// Assert
Assert.True(exp.GetErrorSize() == 4);
Assert.Equal((new ErrorClass(ErrorType.UnexpectedOperator, '*', 1)).PrintError(), exp.GetError(0).PrintError());
Assert.Equal((new ErrorClass(ErrorType.UnexpectedOperator, '/', 5)).PrintError(), exp.GetError(1).PrintError());
Assert.Equal((new ErrorClass(ErrorType.UnexpectedOperator, '*', 16)).PrintError(), exp.GetError(2).PrintError());
Assert.Equal((new ErrorClass(ErrorType.UnexpectedOperator, '*', 19)).PrintError(), exp.GetError(3).PrintError());
}
public void OverInfiniteNumber()
{
// Arrange
var overInfiniteNumber = new StringBuilder();
for (int i = 0; i < 50; i++)
{
overInfiniteNumber.Append("1111111111111111111111111111111111111111111");
}
overInfiniteNumber.Append("+25");
var exp = new ExpressionProcessor();
// Act
exp.ComputeExpression(overInfiniteNumber.ToString());
// Assert
Assert.True(exp.GetErrorSize() == 0);
Assert.True(Double.IsPositiveInfinity(exp.Result));
}
public void ToMuchClosingBrakets()
{
// Arrange
string soloBraket = "123)+23";
string excessBraket = "(1+1)*(3+2))+24";
var exp = new ExpressionProcessor();
var exp2 = new ExpressionProcessor();
// Act
exp.ComputeExpression(soloBraket);
exp2.ComputeExpression(excessBraket);
bool soloB = exp.GetErrorSize() == 1;
bool excessB = exp2.GetErrorSize() == 1;
// Assert
Assert.True(soloB);
Assert.True(excessB);
Assert.Equal((new ErrorClass(ErrorType.ClosingBrakets, 4)).PrintError(), exp.GetError(0).PrintError());
Assert.Equal((new ErrorClass(ErrorType.ClosingBrakets, 12)).PrintError(), exp2.GetError(0).PrintError());
}
public void InfiniteValues()
{
// Arrange
string positiveInfinite = "1/0";
string negativeInfinite = "-1/0";
var exp = new ExpressionProcessor();
var exp2 = new ExpressionProcessor();
// Act
exp.ComputeExpression(positiveInfinite);
exp2.ComputeExpression(negativeInfinite);
// Assert
Assert.True(exp.GetErrorSize() == 0);
Assert.True(exp.FirstInfPosition == 2);
Assert.True(exp2.GetErrorSize() == 0);
Assert.True(exp2.FirstInfPosition == 3);
Assert.True(Double.IsPositiveInfinity(exp.Result));
Assert.True(Double.IsNegativeInfinity(exp2.Result));
}