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-rw-r--r--libraries/base/tests/read-show-solo.hs9
1 files changed, 9 insertions, 0 deletions
diff --git a/libraries/base/tests/read-show-solo.hs b/libraries/base/tests/read-show-solo.hs
new file mode 100644
index 0000000000..553e837836
--- /dev/null
+++ b/libraries/base/tests/read-show-solo.hs
@@ -0,0 +1,9 @@
+module Main (main) where
+import Data.Tuple (Solo (..))
+
+main = do
+ print $ Solo (3 :: Int)
+ print $ Solo (Just "")
+ print $ Just (Solo "")
+ print (read (show (Solo (3 :: Int))) :: Solo Int)
+ print (read "Just Solo { getSolo = 5 }" :: Maybe (Solo Int))