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import Debug.QuickCheck
import Database.HaskellDB
import Database.HaskellDB.Database
import Dp037.D3proj_time_reports
import TestConnect
{-
Possible properties:
-- optimization does not change result
-- lazy and strict give same results
-- inserting a row and then retrieving it gives the original values
-- show . read == id for records
-- read . show == id for records
-- read . show == id for records
-- creating a table and describing it gives the orginal spec
-- same operations on different databases gie the same result
-}
-- FIXME: allow row permutations?
resultEq :: Eq r => [Row r] -> [Row r] -> Bool
resultEq [] [] = True
resultEq (Row x:xs) (Row y:ys) = x == y
resultEq _ _ = False
sameResults :: (GetRec r vr, Eq vr) =>
Database -> Query (Rel r) -> Query (Rel r) -> IO Bool
sameResults db q1 q2 = do
rs1 <- query db q1
rs2 <- query db q2
return $ resultEq rs1 rs2
q1 = do
r <- table d3proj_time_reports
restrict (r!userid .==. constant "d00bring")
restrict (r!hours .>. constant 0.5)
return r
q2 = do
r <- table d3proj_time_reports
restrict (r!userid .==. constant "d00bring"
.&&. r!hours .>. constant 0.5)
return r
t db = do
sameResults db q1 q2 >>= putStrLn . show
main = argConnect t
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