1 files changed, 23 insertions, 0 deletions
diff --git a/testsuite/tests/generics/GShow/Main.hs b/testsuite/tests/generics/GShow/Main.hs
new file mode 100644
index 0000000000..81768ed647
--- /dev/null
+++ b/testsuite/tests/generics/GShow/Main.hs
@@ -0,0 +1,23 @@
+{-# LANGUAGE DeriveGeneric #-}
+
+module Main where
+
+import GHC.Generics hiding (C, D)
+import GShow
+
+-- We should be able to generate a generic representation for these types
+data D a = D0 | D1 { d11 :: a, d12 :: (D a) } deriving Generic
+
+-- Example values
+d0 :: D Char
+d0 = D0
+d1 = D1 (Just 'p') D0
+
+d2 :: D (Int,Float)
+d2 = D1 (3,0.14) D0
+
+-- Generic instances
+instance (GShow a) => GShow (D a)
+
+-- Tests
+main = mapM_ putStrLn [gshow d0, gshow d1, gshow d2]