Add QuickCheck print/parse tests

windows12.cabal

@@ -92,3 +92,36 @@ executable windows12
 
     -- Base language which the package is written in.
     default-language: Haskell2010
+
+executable windows12-qc
+    -- Import common warning flags.
+    import:           warnings
+
+    -- .hs or .lhs file containing the Main module.
+    main-is:          QuickCheckTests.hs
+
+    -- Modules included in this executable, other than Main.
+    other-modules:
+        Windows12.Ast
+        Windows12.Lexer
+        Windows12.Parser
+
+    -- LANGUAGE extensions used by modules in this package.
+    -- other-extensions:
+
+    -- Other library packages from which modules are imported.
+    build-depends:
+        base >= 4.15.1 && < 4.16,
+        megaparsec >= 9.6.1 && < 9.7,
+        text >= 1.2.5 && < 1.3,
+        parser-combinators >= 1.3.0 && < 1.4,
+        prettyprinter >= 1.5.1 && < 1.6,
+        string-conversions >= 0.4.0 && < 0.5,
+        mtl >= 2.2.2 && < 2.3,
+        QuickCheck >= 2.14.2 && < 2.15,
+
+    -- Directories containing source files.
+    hs-source-dirs:   src
+
+    -- Base language which the package is written in.
+    default-language: Haskell2010