public void ExpressionSetTestRemoveVariable()
{
var tests = new List<Tuple<string, string, double>>
{
new Tuple<string, string, double>("a", "2", 2),
new Tuple<string, string, double>("b", "{a}-1", 1),
new Tuple<string, string, double>("c","{a}+{b}", 3),
new Tuple<string, string, double>("d","{a}*{c}", 6),
new Tuple<string, string, double>("e","{d}-{b}", 5),
new Tuple<string, string, double>("f","{e}+4*{b}", 9),
new Tuple<string, string, double>("g","{f}/{c}+1", 4),
new Tuple<string, string, double>("all","({f}/{c}-{g}+{b})*({a}+{f})+{d}*{e}", 30)
};
var set = new AlgexSet();
set.ImmediateSolve = true;
foreach (var test in tests)
{
set.Add(test.Item1, test.Item2);
}
set.Remove("a");
tests.RemoveAt(0);
foreach (var test in tests)
{
Assert.AreEqual(true, double.IsNaN(set[test.Item1]));
}
set.Add("a", 2);
foreach (var test in tests)
{
Assert.AreEqual(test.Item3, set[test.Item1]);
}
}
