ghc-mod/test/CradleSpec.hs

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module CradleSpec where
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import Control.Applicative
import Data.List (isSuffixOf)
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import Language.Haskell.GhcMod.Cradle
import Language.Haskell.GhcMod.Types
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import System.Directory (canonicalizePath)
import System.FilePath ((</>), pathSeparator)
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import Test.Hspec
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import Dir
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spec :: Spec
spec = do
describe "findCradle" $ do
it "returns the current directory" $ do
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withDirectory_ "/" $ do
curDir <- stripLastDot <$> canonicalizePath "/"
res <- findCradle
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res `shouldBe` Cradle {
cradleCurrentDir = curDir
, cradleCabalDir = Nothing
, cradleCabalFile = Nothing
, cradlePackageDbOpts = []
, cradlePackages = []
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}
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it "finds a cabal file and a sandbox" $ do
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withDirectory "test/data/subdir1/subdir2" $ \dir -> do
res <- relativeCradle dir <$> findCradle
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res `shouldBe` Cradle {
cradleCurrentDir = "test" </> "data" </> "subdir1" </> "subdir2"
, cradleCabalDir = Just ("test" </> "data")
, cradleCabalFile = Just ("test" </> "data" </> "cabalapi.cabal")
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, cradlePackageDbOpts = ["-no-user-package-db", "-package-db", "test" </> "data" </> ".cabal-sandbox" </> "/home/me/work/ghc-mod/test/data/.cabal-sandbox/i386-osx-ghc-7.6.3-packages.conf.d"]
, cradlePackages = []
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}
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it "works even if a sandbox config file is broken" $ do
withDirectory "test/data/broken-sandbox" $ \dir -> do
res <- relativeCradle dir <$> findCradle
res `shouldBe` Cradle {
cradleCurrentDir = "test" </> "data" </> "broken-sandbox"
, cradleCabalDir = Just ("test" </> "data" </> "broken-sandbox")
, cradleCabalFile = Just ("test" </> "data" </> "broken-sandbox" </> "dummy.cabal")
, cradlePackageDbOpts = []
, cradlePackages = []
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}
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describe "getPackageDbDir" $ do
it "parses a config file and extracts package db" $ do
pkgDb <- getPackageDbDir "test/data/cabal.sandbox.config"
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pkgDb `shouldBe` "/home/me/work/ghc-mod/test/data/.cabal-sandbox/i386-osx-ghc-7.6.3-packages.conf.d"
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it "throws an error if a config file is broken" $ do
getPackageDbDir "test/data/bad.config" `shouldThrow` anyException
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relativeCradle :: FilePath -> Cradle -> Cradle
relativeCradle dir cradle = cradle {
cradleCurrentDir = toRelativeDir dir $ cradleCurrentDir cradle
, cradleCabalDir = toRelativeDir dir <$> cradleCabalDir cradle
, cradleCabalFile = toRelativeDir dir <$> cradleCabalFile cradle
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}
-- Work around GHC 7.2.2 where `canonicalizePath "/"` returns "/.".
stripLastDot :: FilePath -> FilePath
stripLastDot path
| (pathSeparator:'.':"") `isSuffixOf` path = init path
| otherwise = path