have type providers with three properties: "a", "b" and "c" of type "string", "string option" and "int option" respectively.
When I have an instance with "", None, and Some 1 in these properties, this fails:
(row1.a, row1.b, row1.c) |> should equal ("", None, Some 1)
But it all works great:
row1.a |> should equal ""
row1.b |> should equal None
row1.c |> should equal (Some 1)
("", None, Some 1) |> should equal ("", None, Some 1)
How is this possible? What can make None in b different from any other No? After compilation, None is just null, can two NULL values differ in .Net?
Tuples have structural equality, like most F # types, so it should work. I get a NUnit.Framework.AssertionException message with the message:
Expected: <(, , Some(1))>
But was: <(, , Some(1))>
NUnit just calls .Equals, so where the problem is.
This also fails:
(row1.a, row1.b, row1.c).Equals(("", None, Some 1)) |> should equal true
row1 System.Tuple<string,Microsoft.FSharp.Core.FSharpOption<string>,Microsoft.FSharp.Core.FSharpOption<int>>, :
row1 |> should equal ("", None, Some 1)
, None.
, .