public void CorrectValue(string input, double value)
{
StringExpression parser = new StringExpression(input, new TokenFactory());
var parsed = parser.Parse();
var evaluator = new ParsedExpression(parsed);
Assert.Equal(value, evaluator.Evaluate());
}
public void DivisionByZero(string input)
{
StringExpression parser = new StringExpression(input, new TokenFactory());
var parsed = parser.Parse();
var evaluator = new ParsedExpression(parsed);
Assert.Throws <ArithmeticException>(() => evaluator.Evaluate());
}
public void InvalidSyntax(string input)
{
StringExpression parser = new StringExpression(input, new TokenFactory());
Assert.Throws <ArgumentException>(() => parser.Parse());
}