public void EquationToStringTest()
{
IEquationBuilder equationBuilder = new EquationBuilder(new BracketOpener(), new SummandBuilder());
string inputEquation = "(5x+ 5y)/5 -x^2=1";
var equation = equationBuilder.Create(inputEquation);
equation.Processing();
Assert.AreEqual(equation.ToString(), "- x^2 + x + y - 1 = 0");
}
public void EquationBuildAndProcessing()
{
IEquationBuilder equationBuilder = new EquationBuilder(new BracketOpener(), new SummandBuilder());
string inputEquation = "x^2 + 2y = 2((2x-1)/2 + 2.5(x + y^2) - 7.11)";
var expectedLeft = new List <Summand>
{
new Summand {
Multiplier = 1, Variables = new List <Variable> {
new Variable {
Exponent = 2, Letter = 'x'
}
}
},
new Summand {
Multiplier = -7, Variables = new List <Variable> {
new Variable {
Exponent = 1, Letter = 'x'
}
}
},
new Summand {
Multiplier = -5, Variables = new List <Variable> {
new Variable {
Exponent = 2, Letter = 'y'
}
}
},
new Summand {
Multiplier = 2, Variables = new List <Variable> {
new Variable {
Exponent = 1, Letter = 'y'
}
}
},
new Summand {
Multiplier = 15.22, Variables = new List <Variable>()
}
};
expectedLeft = expectedLeft.OrderByDescending(x => x).ToList();
var equation = equationBuilder.Create(inputEquation);
equation.Processing();
Assert.IsNotNull(equation);
Assert.IsTrue(expectedLeft.SequenceEqual(equation.LeftSide));
Assert.IsTrue(equation.RightSide.Count == 0);
}