public void BoolSubNumberTest()
{
var parameters = new ParameterCollection() { new Parameter("x", true) };
var add = new SubAssign(new Variable("x"), new Number(2));
Assert.Throws<NotSupportedException>(() => add.Execute(parameters));
}
public void SubAssignCalc()
{
var parameters = new ParameterCollection() { new Parameter("x", 10) };
var sub = new SubAssign(new Variable("x"), new Number(2));
var result = sub.Execute(parameters);
var expected = 8.0;
Assert.Equal(expected, result);
Assert.Equal(expected, parameters["x"]);
}