X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2FTSN%2FXML%2FWeather.hs;h=bda29ee2541005efb4ca1eaedcccf77d1231d201;hb=fa27649ae583f6bdc20c54db4fc8f38a382a536c;hp=e9515edad67fb85901d596d1e7857cddfa035b28;hpb=bdd0f2c4f6661f41ba4b7c9f7682e0fc8ee5e32b;p=dead%2Fhtsn-import.git

diff --git a/src/TSN/XML/Weather.hs b/src/TSN/XML/Weather.hs
index e9515ed..bda29ee 100644
--- a/src/TSN/XML/Weather.hs
+++ b/src/TSN/XML/Weather.hs
@@ -10,6 +10,7 @@
 --   that league contains a bunch of listings.
 --
 module TSN.XML.Weather (
+  dtd,
   pickle_message,
   -- * Tests
   weather_tests,
@@ -23,8 +24,15 @@ where
 import Control.Monad ( forM_ )
 import Data.Time ( UTCTime )
 import Data.Tuple.Curry ( uncurryN )
-import Database.Groundhog ( migrate )
+import Database.Groundhog (
+  countAll,
+  deleteAll,
+  migrate,
+  runMigration,
+  silentMigrationLogger )
 import Database.Groundhog.Core ( DefaultKey )
+import Database.Groundhog.Generic ( runDbConn )
+import Database.Groundhog.Sqlite ( withSqliteConn )
 import Database.Groundhog.TH (
   groundhog,
   mkPersist )
@@ -53,7 +61,15 @@ import Xml (
   FromXmlFk(..),
   ToDb(..),
   pickle_unpickle,
-  unpickleable )
+  unpickleable,
+  unsafe_unpickle )
+
+
+
+-- | The DTD to which this module corresponds. Used to invoke dbimport.
+--
+dtd :: String
+dtd = "weatherxml.dtd"
 
 
 --
@@ -351,7 +367,8 @@ weather_tests :: TestTree
 weather_tests =
   testGroup
     "Weather tests"
-    [ test_pickle_of_unpickle_is_identity,
+    [ test_on_delete_cascade,
+      test_pickle_of_unpickle_is_identity,
       test_unpickle_succeeds ]
 
 
@@ -376,3 +393,29 @@ test_unpickle_succeeds =
     actual <- unpickleable path pickle_message
     let expected = True
     actual @?= expected
+
+
+-- | Make sure everything gets deleted when we delete the top-level
+--   record.
+--
+test_on_delete_cascade :: TestTree
+test_on_delete_cascade =
+  testCase "deleting weather deletes its children" $ do
+    let path = "test/xml/weatherxml.xml"
+    weather <- unsafe_unpickle path pickle_message
+    let a = undefined :: Weather
+    let b = undefined :: WeatherForecast
+    let c = undefined :: WeatherForecastListing
+    actual <- withSqliteConn ":memory:" $ runDbConn $ do
+                runMigration silentMigrationLogger $ do
+                  migrate a
+                  migrate b
+                  migrate c
+                _ <- dbimport weather
+                deleteAll a
+                count_a <- countAll a
+                count_b <- countAll b
+                count_c <- countAll c
+                return $ count_a + count_b + count_c
+    let expected = 0
+    actual @?= expected