test: try to replicate issue with Maybe in multi-field tuple

[kallevmercury]

Relates to: #51

stack test --stack-yaml stack-9.4.8.yaml

Failures:

  test/Generic.hs:68:76: 
  1) Generic instances TestMaybeTuple should handle Maybe in tuples correctly
       expected: [TSTypeAlternatives {
                   typeName = "IConWithMaybe",
                   typeGenericVariables = [],
                   alternativeTypes = ["[string, number[], string[]]"],
                   typeDoc = Nothing
                 }, TSTypeAlternatives {
                   typeName = "ISimpleConstructor",
                   typeGenericVariables = [],
                   alternativeTypes = ["string"],
                   typeDoc = Nothing
                 }, TSInterfaceDeclaration {
                   interfaceName = "IConWithMaybe",
                   interfaceGenericVariables = [],
                   interfaceMembers = [TSField {
                 @@ 4 lines omitted @@
                 }, TSField {
                   fieldOptional = False,
                   fieldName = "contents",
                   fieldType = "IConWithMaybe",
                   fieldDoc = Nothing
                 }],
                   interfaceDoc = Nothing
                 @@ 21 lines omitted @@
                 
        but got: [TSInterfaceDeclaration {
                   interfaceName = "IConWithMaybe",
                   interfaceGenericVariables = [],
                   interfaceMembers = [TSField {
                 @@ 4 lines omitted @@
                 }, TSField {
                   fieldOptional = False,
                   fieldName = "contents",
                   fieldType = "[string, number[], string[]]",
                   fieldDoc = Nothing
                 }],
                   interfaceDoc = Nothing
                 @@ 21 lines omitted @@

[thomasjm]

Issue resolved by #52