#pragma warning restore IDE0022 // Use expression body for methods
static char Next(string vars, char next)
{
var e = ExprExtractor.GetExpression(vars).Single();
var uniq = new UniqVariable(e);
return(uniq.Next(next));
}
public void State()
{
var uniq = new UniqVariable(ExprExtractor.GetExpression("c").Single());
Assert.AreEqual('b', uniq.Next('b'));
Assert.AreEqual('a', uniq.Next('b'));
Assert.AreEqual('d', uniq.Next('b'));
}
public Evaluation(string input)
{
var expression = ExprExtractor.GetExpression(input);
var calc = new Calculator(expression);
calc.Evaluate();
Results = calc.Results;
Error = calc.Error;
}
public void Errors()
{
var abcxyz = "abcdefghijklmnopqrstuvwxyz";
Assert.ThrowsException <InvalidOperationException>(() => Next(abcxyz.ToUpper(), 'A'));
Assert.ThrowsException <InvalidOperationException>(() => Next(abcxyz, 'a'));
var bcxyz = abcxyz.Substring(1);
var uniq = new UniqVariable(ExprExtractor.GetExpression(bcxyz + abcxyz.ToUpper()).Single());
Assert.AreEqual('a', uniq.Next('a'));
Assert.ThrowsException <InvalidOperationException>(() => uniq.Next('a'));
uniq = new UniqVariable(ExprExtractor.GetExpression(bcxyz).Single());
Assert.AreEqual('a', uniq.Next('b'));
Assert.ThrowsException <InvalidOperationException>(() => uniq.Next('a'));
}
static void IsSame(string input) => Assert.AreEqual(input, string.Join(Environment.NewLine, ExprExtractor.GetExpression(input)));
static Expression Parse(string input) => ExprExtractor.GetExpression(splitLines.Replace(input, Environment.NewLine)).Single();