Fix treatment of optionals which are not in TestCaseData (#49)

.github/workflows/dotnet.yaml

@@ -74,6 +74,7 @@ jobs:
       run: 'nix develop --command dotnet exec ./TestRunner/bin/Release/net8.0/TestRunner.dll ./Consumer/bin/Release/net8.0/Consumer.dll --trx TrxOut/out.trx'
     - name: Parse Trx files
       uses: NasAmin/trx-parser@v0.6.0
+      if: always()
       id: trx-parser
       with:
         TRX_PATH: ${{ github.workspace }}/TrxOut

Consumer/TestCaseData.fs

@@ -25,10 +25,15 @@ module TestCaseData =
     let ``Consume test data from multiple sources`` (i : int, s : string, arr : float[]) =
         lock multipleSources (fun () -> multipleSources.Add (i, s, arr))
 
-    let optional = [ Some "hi" ; None ] |> List.map TestCaseData
+    let optionalData = [ Some "hi" ; None ] |> List.map TestCaseData
 
-    [<TestCaseSource(nameof optional)>]
+    [<TestCaseSource(nameof optionalData)>]
-    let ``Consume options`` (s : string option) : unit = s |> shouldEqual s
+    let ``Consume options, TestCaseData`` (s : string option) : unit = s |> shouldEqual s
+
+    let optionalRaw = [ Some "hi" ; None ]
+
+    [<TestCaseSource(nameof optionalRaw)>]
+    let ``Consume options, raw`` (s : string option) : unit = s |> shouldEqual s
 
     [<OneTimeTearDown>]
     let tearDown () =

TestRunner.Lib/TestFixture.fs

@@ -332,6 +332,7 @@ module TestFixture =
                                 yield
                                     Guid.NewGuid (),
                                     match arg with
+                                    | null -> [| (null : obj) |]
                                     | :? Tuple<obj, obj> as (a, b) -> [| a ; b |]
                                     | :? Tuple<obj, obj, obj> as (a, b, c) -> [| a ; b ; c |]
                                     | :? Tuple<obj, obj, obj, obj> as (a, b, c, d) -> [| a ; b ; c ; d |]