public void compute_visitor(string expression, double expected)
{
var analyzer = new NodeAnalyzer();
var tree = analyzer.Parse(expression);
var computeVisitor = new ComputeVisitor();
computeVisitor.VisitNode(tree);
computeVisitor.ComputedResult.Should().Be(expected);
}
public void plus_to_minus_mutator(string expression, double expected)
{
var analyzer = new NodeAnalyzer();
var tree = analyzer.Parse(expression);
var mutator = new PlusToMinusMutator();
tree = mutator.MutateNode(tree);
var computeVisitor = new ComputeVisitor();
computeVisitor.VisitNode(tree);
computeVisitor.ComputedResult.Should().Be(expected);
}