Use doctest to check examples in documentation

3 files changed, 22 insertions, 0 deletions

diff --git a/haddock-library/haddock-library.cabal b/haddock-library/haddock-library.cabal
index 20e0e94e..8af94a4b 100644
--- a/haddock-library/haddock-library.cabal
+++ b/haddock-library/haddock-library.cabal
@@ -73,6 +73,14 @@ test-suite spec
     , deepseq
     , QuickCheck == 2.*
 
+test-suite doctests
+  type:             exitcode-stdio-1.0
+  default-language: Haskell2010
+  hs-source-dirs:   test
+  main-is:          doctests.hs
+  ghc-options:      -threaded
+  build-depends:    base, doctest >= 0.8
+
 source-repository head
   type:     git
   subdir:   haddock-library
diff --git a/haddock-library/src/Documentation/Haddock/Parser.hs b/haddock-library/src/Documentation/Haddock/Parser.hs
index b7178842..c84217b7 100644
--- a/haddock-library/src/Documentation/Haddock/Parser.hs
+++ b/haddock-library/src/Documentation/Haddock/Parser.hs
@@ -38,6 +38,9 @@ import           Documentation.Haddock.Types
 import           Documentation.Haddock.Utf8
 import           Prelude hiding (takeWhile)
 
+-- $setup
+-- >>> :set -XOverloadedStrings
+
 -- | Identifier string surrounded with opening and closing quotes/backticks.
 type Identifier = (Char, String, Char)
 
diff --git a/haddock-library/test/doctests.hs b/haddock-library/test/doctests.hs
new file mode 100644
index 00000000..e4f93858
--- /dev/null
+++ b/haddock-library/test/doctests.hs
@@ -0,0 +1,11 @@
+module Main where
+
+import           Test.DocTest
+
+main :: IO ()
+main = doctest [
+    "-isrc"
+  , "-ivendor/attoparsec-0.10.4.0"
+  , "-optP-include", "-optPdist/build/autogen/cabal_macros.h"
+  , "src/Documentation/Haddock/Parser.hs"
+  ]