Merge pull request #78 from pchalamet/feature/trim-workaround

trim workaround (issue #77)

Author: Tarmil

src/FSharp.SystemTextJson/Collection.fs

@@ -12,7 +12,7 @@ type JsonListConverter<'T>(fsOptions) =
     let needsNullChecking = not tIsNullable && not tType.IsValueType
 
     override _.Read(reader, _typeToConvert, options) =
-        let array = JsonSerializer.Deserialize<'T[]>(&reader, options)
+        let array = JsonSerializer.Deserialize(&reader, typeof<'T[]>, options) :?> 'T[]
         if needsNullChecking then
             for elem in array do
                 if isNull (box elem) then

tests/FSharp.SystemTextJson.TrimTest/Program.fs

@@ -6,7 +6,8 @@ open Xunit
 let ``Regression #77`` () =
     let options = JsonSerializerOptions()
     options.Converters.Add(JsonFSharpConverter())
-    Assert.Equal<int>([1; 2; 3], JsonSerializer.Deserialize<int list>("[1,2,3]", options))
+    Assert.Equal<int list>([1; 2; 3], JsonSerializer.Deserialize("[1,2,3]", options))
+    Assert.Equal("""[1,2,3]""", JsonSerializer.Serialize([1;2;3], options))
 
 [<EntryPoint>]
 let main args = Xunit.ConsoleClient.Program.Main args