public IEquation Translate(string equation)
{
var splitedEquation = equation.Split(new [] { Symbol.Equality }, StringSplitOptions.RemoveEmptyEntries);
var leftPart = _lexemParser.Parse(splitedEquation[0]);
var rightPart = _lexemParser.Parse(splitedEquation[1]);
return(new Equation(leftPart, rightPart));
}
public void EquationStringShouldBeParsedToSummands()
{
//GIVEN
ILexemParser lexemParser = new LexemParser();
const string inputEquation = "x^2 + 3.5xy - y";
const int expectedSummandsCount = 3;
var expectedSummand1 = new Summand(new[] { new Variable('x', degree: 2) });
var expectedSummand2 = new Summand(new[] { new Variable('x'), new Variable('y') }, coefficient: 3.5f);
var expectedSummand3 = new Summand(new[] { new Variable('y') }, coefficient: -1);
// WHEN
var resultSummands = lexemParser.Parse(inputEquation);
// THEN
Assert.AreEqual(resultSummands.Count, expectedSummandsCount);
Assert.AreEqual(resultSummands[0], expectedSummand1);
Assert.AreEqual(resultSummands[1], expectedSummand2);
Assert.AreEqual(resultSummands[2], expectedSummand3);
}