3 files changed, 107 insertions, 2 deletions
diff --git a/tests/Hakyll/Core/Runtime/Tests.hs b/tests/Hakyll/Core/Runtime/Tests.hs
index 9c23162..615aaf2 100644
--- a/tests/Hakyll/Core/Runtime/Tests.hs
+++ b/tests/Hakyll/Core/Runtime/Tests.hs
@@ -8,6 +8,7 @@ module Hakyll.Core.Runtime.Tests
 --------------------------------------------------------------------------------
 import qualified Data.ByteString     as B
 import           System.FilePath     ((</>))
+import           System.Exit         (ExitCode (..))
 import           Test.Tasty          (TestTree, testGroup)
 import           Test.Tasty.HUnit    (Assertion, (@?=))
 
@@ -22,7 +23,7 @@ import           TestSuite.Util
 --------------------------------------------------------------------------------
 tests :: TestTree
 tests = testGroup "Hakyll.Core.Runtime.Tests" $
-    fromAssertions "run" [case01, case02]
+    fromAssertions "run" [case01, case02, case03]
 
 
 --------------------------------------------------------------------------------
@@ -94,3 +95,30 @@ case02 = do
     favicon @?= "Test"
 
     cleanTestEnv
+
+
+--------------------------------------------------------------------------------
+-- Test that dependency cycles are correctly identified
+case03 :: Assertion
+case03 = do
+    logger  <- Logger.new Logger.Error
+    (ec, _) <- run testConfiguration logger $ do
+
+        create ["partial.html.out1"] $ do
+            route idRoute
+            compile $ do
+                example <- loadSnapshotBody "partial.html.out2" "raw"
+                makeItem example
+                    >>= loadAndApplyTemplate "partial.html" defaultContext
+
+        create ["partial.html.out2"] $ do
+            route idRoute
+            compile $ do
+                example <- loadSnapshotBody "partial.html.out1" "raw"
+                makeItem example
+                    >>= loadAndApplyTemplate "partial.html" defaultContext
+
+
+    ec @?= ExitFailure 1
+
+    cleanTestEnv
diff --git a/tests/Hakyll/Web/Html/Tests.hs b/tests/Hakyll/Web/Html/Tests.hs
index cd362f4..9ab10bc 100644
--- a/tests/Hakyll/Web/Html/Tests.hs
+++ b/tests/Hakyll/Web/Html/Tests.hs
@@ -20,7 +20,18 @@ tests :: TestTree
 tests = testGroup "Hakyll.Web.Html.Tests" $ concat
     [ fromAssertions "demoteHeaders"
         [ "<h2>A h1 title</h2>" @=?
-            demoteHeaders "<h1>A h1 title</h1>"
+            demoteHeaders "<h1>A h1 title</h1>" -- Assert single-step demotion
+        , "<h6>A h6 title</h6>" @=?
+            demoteHeaders "<h6>A h6 title</h6>" -- Assert maximum demotion is h6
+        ]
+
+    , fromAssertions "demoteHeadersBy"
+        [ "<h3>A h1 title</h3>" @=?
+            demoteHeadersBy 2 "<h1>A h1 title</h1>"
+        , "<h6>A h5 title</h6>" @=?
+            demoteHeadersBy 2 "<h5>A h5 title</h5>" -- Assert that h6 is the lowest possible demoted header.
+        , "<h4>A h4 title</h4>" @=?
+            demoteHeadersBy 0 "<h4>A h4 title</h4>" -- Assert that a demotion of @N < 1@ is a no-op.
         ]
 
     , fromAssertions "withUrls"
diff --git a/tests/Hakyll/Web/Pandoc/Biblio/Tests.hs b/tests/Hakyll/Web/Pandoc/Biblio/Tests.hs
new file mode 100644
index 0000000..fb98f08
--- /dev/null
+++ b/tests/Hakyll/Web/Pandoc/Biblio/Tests.hs
@@ -0,0 +1,66 @@
+--------------------------------------------------------------------------------
+{-# LANGUAGE OverloadedStrings #-}
+module Hakyll.Web.Pandoc.Biblio.Tests
+    ( tests
+    ) where
+
+
+--------------------------------------------------------------------------------
+import           System.FilePath            ((</>))
+import           Test.Tasty                 (TestTree, testGroup)
+import           Test.Tasty.Golden          (goldenVsString)
+import qualified Data.ByteString            as B
+import qualified Data.ByteString.Lazy       as LBS
+
+
+--------------------------------------------------------------------------------
+import           Hakyll
+import           Hakyll.Core.Runtime
+import           Hakyll.Web.Pandoc.Biblio
+import qualified Hakyll.Core.Logger         as Logger
+import           TestSuite.Util
+
+
+--------------------------------------------------------------------------------
+tests :: TestTree
+tests = testGroup "Hakyll.Web.Pandoc.Biblio.Tests" $
+    [ goldenTest01
+    ]
+
+--------------------------------------------------------------------------------
+goldenTestsDataDir :: FilePath
+goldenTestsDataDir = "tests/data/biblio"
+
+--------------------------------------------------------------------------------
+goldenTest01 :: TestTree
+goldenTest01 =
+    goldenVsString
+        "biblio01"
+        (goldenTestsDataDir </> "biblio01.golden")
+        (do
+            -- Code lifted from https://github.com/jaspervdj/hakyll-citeproc-example.
+            logger <- Logger.new Logger.Error
+            let config = testConfiguration { providerDirectory = goldenTestsDataDir }
+            _ <- run config logger $ do
+                let myPandocBiblioCompiler = do
+                        csl <- load "chicago.csl"
+                        bib <- load "refs.bib"
+                        getResourceBody >>=
+                            readPandocBiblio defaultHakyllReaderOptions csl bib >>=
+                            return . writePandoc
+
+                match "default.html" $ compile templateCompiler
+                match "chicago.csl" $ compile cslCompiler
+                match "refs.bib"    $ compile biblioCompiler
+                match "page.markdown" $ do
+                    route $ setExtension "html"
+                    compile $
+                        myPandocBiblioCompiler >>=
+                        loadAndApplyTemplate "default.html" defaultContext
+
+            output <- fmap LBS.fromStrict $ B.readFile $
+                    destinationDirectory testConfiguration </> "page.html"
+
+            cleanTestEnv
+
+            return output)