{-# LANGUAGE ScopedTypeVariables, BangPatterns #-}
module Errors (
testErrorsColumns
, testErrorsInvalidParams
, testErrorsInvalidNamedParams
, testErrorsWithStatement
, testErrorsColumnName
, testErrorsTransaction
) where
import Prelude hiding (catch)
import Control.Exception
import qualified Data.ByteString as B
import qualified Data.ByteString.Lazy as LB
import qualified Data.Text as T
import qualified Data.Text.Lazy as LT
import Data.Word
import Data.Time (Day, UTCTime)
import Common
import Database.SQLite.Simple.Types (Null)
import Database.SQLite3 (SQLError)
-- The "length (show e) `seq` .." trickery below is to force evaluate
-- the contents of error messages. Another option would be to log
-- them (would be useful), but I don't know if HUnit has any logging
-- mechanisms. Just printing them as is will look like the tests are
-- hitting errors and would be confusing.
assertResultErrorCaught :: IO a -> Assertion
assertResultErrorCaught action = do
catch (action >> return False) (\(e :: ResultError) -> length (show e) `seq` return True) >>=
assertBool "assertResultError exc"
assertFormatErrorCaught :: IO a -> Assertion
assertFormatErrorCaught action = do
catch (action >> return False) (\(e :: FormatError) -> length (show e) `seq` return True) >>=
assertBool "assertFormatError exc"
assertSQLErrorCaught :: IO a -> Assertion
assertSQLErrorCaught action = do
catch (action >> return False) (\(e :: SQLError) -> length (show e) `seq` return True) >>=
assertBool "assertSQLError exc"
assertOOBCaught :: IO a -> Assertion
assertOOBCaught action = do
catch (action >> return False) (\(e :: ArrayException) -> length (show e) `seq` return True) >>=
assertBool "assertOOBCaught exc"
testErrorsColumns :: TestEnv -> Test
testErrorsColumns TestEnv{..} = TestCase $ do
execute_ conn "CREATE TABLE cols (id INTEGER PRIMARY KEY, t TEXT)"
execute_ conn "INSERT INTO cols (t) VALUES ('test string')"
rows <- query_ conn "SELECT t FROM cols" :: IO [Only String]
assertEqual "row count" 1 (length rows)
assertEqual "string" (Only "test string") (head rows)
-- Mismatched number of output columns (selects two, dest type has 1 field)
assertResultErrorCaught (query_ conn "SELECT id,t FROM cols" :: IO [Only Int])
-- Same as above but the other way round (select 1, dst has two)
assertResultErrorCaught (query_ conn "SELECT id FROM cols" :: IO [(Int, String)])
-- Mismatching types (source int,text doesn't match dst string,int
assertResultErrorCaught (query_ conn "SELECT id, t FROM cols" :: IO [(String, Int)])
-- Mismatching types (source string doesn't match dst integer
assertResultErrorCaught (query_ conn "SELECT 'foo'" :: IO [Only Integer])
-- Mismatching types (sources don't match destination float/double type)
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only Double])
assertResultErrorCaught (query_ conn "SELECT 'foo'" :: IO [Only Double])
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only Float])
assertResultErrorCaught (query_ conn "SELECT 'foo'" :: IO [Only Float])
-- Mismatching types (sources don't match destination bool type, or is out of bounds)
assertResultErrorCaught (query_ conn "SELECT 'true'" :: IO [Only Bool])
assertResultErrorCaught (query_ conn "SELECT 2" :: IO [Only Bool])
-- Mismatching types (sources don't match destination string types (text, string)
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only T.Text])
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only LT.Text])
assertResultErrorCaught (query_ conn "SELECT 1.0" :: IO [Only T.Text])
assertResultErrorCaught (query_ conn "SELECT 1.0" :: IO [Only LT.Text])
-- Mismatching types (sources don't match destination string types (time/date)
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only UTCTime])
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only Day])
-- Mismatching types (sources don't match destination bytestring)
[Only (_ :: B.ByteString)] <- query_ conn "SELECT X'3177'"
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only B.ByteString])
assertResultErrorCaught (query_ conn "SELECT 1" :: IO [Only LB.ByteString])
assertResultErrorCaught (query_ conn "SELECT 'foo'" :: IO [Only B.ByteString])
assertResultErrorCaught (query_ conn "SELECT 'foo'" :: IO [Only LB.ByteString])
-- Trying to get a blob into a string
let d = B.pack ([0..127] :: [Word8])
execute_ conn "CREATE TABLE cols_blobs (id INTEGER, b BLOB)"
execute conn "INSERT INTO cols_blobs (id, b) VALUES (?,?)" (1 :: Int, d)
assertResultErrorCaught
(do [Only _t1] <- query conn "SELECT b FROM cols_blobs WHERE id = ?" (Only (1 :: Int)) :: IO [Only String]
return ())
execute_ conn "CREATE TABLE cols_bools (id INTEGER PRIMARY KEY, b BOOLEAN)"
-- 3 = invalid value for bool, must be 0 or 1
execute_ conn "INSERT INTO cols_bools (b) VALUES (3)"
assertResultErrorCaught
(do [Only _t1] <- query_ conn "SELECT b FROM cols_bools" :: IO [Only Bool]
return ())
[Only (nullVal :: Null)] <- query_ conn "SELECT NULL"
False @=? nullVal == nullVal
False @=? nullVal /= nullVal
assertResultErrorCaught
(do [Only (_t1 :: Null)] <- query_ conn "SELECT 1" :: IO [Only Null]
return ())
testErrorsInvalidParams :: TestEnv -> Test
testErrorsInvalidParams TestEnv{..} = TestCase $ do
execute_ conn "CREATE TABLE invparams (id INTEGER PRIMARY KEY, t TEXT)"
-- Test that only unnamed params are accepted
assertFormatErrorCaught
(execute conn "INSERT INTO invparams (t) VALUES (:v)" (Only ("foo" :: String)))
assertFormatErrorCaught
(execute conn "INSERT INTO invparams (id, t) VALUES (:v,$1)" (3::Int, "foo" :: String))
-- In this case, we have two bound params but only one given to
-- execute. This should cause an error.
assertFormatErrorCaught
(execute conn "INSERT INTO invparams (id, t) VALUES (?, ?)" (Only (3::Int)))
testErrorsInvalidNamedParams :: TestEnv -> Test
testErrorsInvalidNamedParams TestEnv{..} = TestCase $ do
-- Test that only unnamed params are accepted
assertFormatErrorCaught
(queryNamed conn "SELECT :foo" [":foox" := (1 :: Int)] :: IO [Only Int])
-- In this case, we have two bound params but only one given to
-- execute. This should cause an error.
assertFormatErrorCaught
(queryNamed conn "SELECT :foo + :bar" [":foo" := (1 :: Int)] :: IO [Only Int])
-- Can't use named params in SQL string with the unnamed query/exec variants
assertFormatErrorCaught
(query conn "SELECT :foo" (Only (1 :: Int)) :: IO [Only Int])
testErrorsWithStatement :: TestEnv -> Test
testErrorsWithStatement TestEnv{..} = TestCase $ do
execute_ conn "CREATE TABLE invstat (id INTEGER PRIMARY KEY, t TEXT)"
assertSQLErrorCaught $
withStatement conn "SELECT id, t, t1 FROM invstat" $ \_stmt ->
assertFailure "Error not detected"
testErrorsColumnName :: TestEnv -> Test
testErrorsColumnName TestEnv{..} = TestCase $ do
execute_ conn "CREATE TABLE invcolumn (id INTEGER PRIMARY KEY, t TEXT)"
assertOOBCaught $
withStatement conn "SELECT id FROM invcolumn" $ \stmt ->
columnName stmt (ColumnIndex (-1)) >> assertFailure "Error not detected"
testErrorsTransaction :: TestEnv -> Test
testErrorsTransaction TestEnv{..} = TestCase $ do
execute_ conn "CREATE TABLE trans (id INTEGER PRIMARY KEY, t TEXT)"
v <- withTransaction conn $ do
executeNamed conn "INSERT INTO trans (t) VALUES (:txt)" [":txt" := ("foo" :: String)]
[Only r] <- query_ conn "SELECT t FROM trans" :: IO [Only String]
return r
v @=? "foo"
e <- rowExists
True @=? e
execute_ conn "DELETE FROM trans"
e <- rowExists
False @=? e
assertFormatErrorCaught
(withTransaction conn $ do
-- this execute should be automatically rolled back on error
executeNamed conn
"INSERT INTO trans (t) VALUES (:txt)" [":txt" := ("foo" :: String)]
-- intentional mistake here to hit an error & cause rollback of txn
executeNamed conn
"INSERT INTO trans (t) VALUES (:txt)" [":missing" := ("foo" :: String)])
e <- rowExists
False @=? e
where
rowExists = do
rows <- query_ conn "SELECT t FROM trans" :: IO [Only String]
case rows of
[Only txt] -> do
"foo" @=? txt
return True
[] ->
return False
_ -> error "should have only one row"