public void WhenWrongFunctionExpressionIsPassed_Then_ExceptionShouldBeThrown(string expression) { var sut = new FunctionOrConstTermParser(); Assert.Throws <InvalidOperationException>(() => { var result = sut.Parse(expression, 0); }); }
public void WhenExpressionConsistOnlyFromLetters_Then_ConstTermShouldBeReturned() { var sut = new FunctionOrConstTermParser(); var result = sut.Parse("pi", 0); Assert.True(result.TermType == TermType.Const); Assert.True(result.Term == "pi"); }
public void WhenExpressionConsistFromLettersAndParenthesis_Then_FunctionTermShouldBeReturned( string expression, string expectedFunction, string expectedParameters, int numberOfParams) { var sut = new FunctionOrConstTermParser(); var result = sut.Parse(expression, 0) as ComplexMathParserResult; Assert.True(result.TermType == TermType.Function); Assert.True(result.Term == expectedFunction); Assert.True(result.InternalTerm != null); Assert.True(result.InternalTerm.Term == expectedParameters); Assert.True(result.InternalTerm.TermType == TermType.Expression); Assert.True(result.NumberOfParams == numberOfParams); }