public void CreateExpression_TwoChildExpressionAndPlusOperator_Sum()
{
var children = new Expression[] { };
var term = new NumberTerm(10.0);
var expression = term.CreateExpression(children);
var lambda = Expression.Lambda<Func<double>>(expression);
Assert.That(lambda.Compile()(), Is.EqualTo(10.0).Within(1e-5));
}
public void Number_SomeValue_Equal()
{
var number = 3.7;
var term = new NumberTerm(number);
Assert.That(term.Number, Is.EqualTo(number));
}