Add empty comment test file

Author: philderbeast

tests/empty-comment-test.hs

@@ -0,0 +1,74 @@
+-- |
+haddockAboveSingle = 1
+
+haddockBelowSingle = 1
+-- ^
+
+-- |
+--
+haddockAboveSingles = 1
+
+-- |
+-- >>>
+haddockAboveDoctest = 1
+
+-- |
+--
+--
+-- foo
+haddockAboveIntoNonEmpty = 1
+
+haddockBelowIntoNonEmpty = 1
+-- ^
+--
+--
+-- foo
+
+{--}
+commentMultiEmpty = 1
+
+{- -}
+commentMultiEmptySpace = 1
+
+{-
+
+    -}
+commentMultiEmptyLines = 1
+
+{- |-}
+haddockAboveMultiEmpty = 1
+
+{- | -}
+haddockAboveMultiEmptySpace = 1
+
+{- |
+
+    -}
+haddockAboveMultiEmptyLines = 1
+
+haddockBelowMultiEmpty = 1
+{- ^-}
+
+haddockBelowMultiEmptySpace = 1
+{- ^-}
+
+haddockBelowMultiEmptyLines = 1
+{- ^
+
+    -}
+
+data HaddockSingle = HaddockSingle
+  { haddockFieldEmptyBelow :: Int
+  -- ^
+  -- |
+  , haddockFieldAboveEmpty :: Int
+  , haddockFieldEmptyAfter :: Int -- ^
+  }
+
+data HaddockMulti = HaddockMulti
+  { haddockFieldEmptyBelow :: Int
+  {- ^-}
+  {- |-}
+  , haddockFieldAboveEmpty :: Int
+  , haddockFieldEmptyAfter :: Int {- ^-}
+  }