51 lines
1.4 KiB
Haskell
51 lines
1.4 KiB
Haskell
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module TestCommon where
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import Nix
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import Nix.Monad
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import Nix.Monad.Instance
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import Nix.Parser
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import Nix.Pretty
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import System.Directory
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import System.Environment
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import System.IO
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import System.Posix.Temp
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import System.Process
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import Test.Tasty.HUnit
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hnixEvalFile :: FilePath -> IO (NValueNF (Lazy IO))
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hnixEvalFile file = do
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parseResult <- parseNixFileLoc file
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case parseResult of
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Failure err ->
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error $ "Parsing failed for file `" ++ file ++ "`.\n" ++ show err
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Success expression -> do
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setEnv "TEST_VAR" "foo"
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evalLoc (Just file) expression
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hnixEvalString :: String -> IO (NValueNF (Lazy IO))
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hnixEvalString expr = do
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case parseNixString expr of
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Failure err ->
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error $ "Parsing failed for expressien `" ++ expr ++ "`.\n" ++ show err
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Success expression -> eval Nothing expression
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nixEvalString :: String -> IO String
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nixEvalString expr = do
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(fp,h) <- mkstemp "nix-test-eval"
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hPutStr h expr
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hClose h
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res <- nixEvalFile fp
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removeFile fp
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return res
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nixEvalFile :: FilePath -> IO String
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nixEvalFile fp = do
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readProcess "nix-instantiate" ["--eval", fp] ""
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assertEvalMatchesNix :: String -> Assertion
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assertEvalMatchesNix expr = do
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hnixVal <- (++"\n") . printNix <$> hnixEvalString expr
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nixVal <- nixEvalString expr
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assertEqual expr nixVal hnixVal
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