{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE OverloadedStrings #-}

-- For the handy instance IsString PackageIdentifier
{-# OPTIONS_GHC -fno-warn-orphans #-}

module IntegrationTests2 where

import Distribution.Client.DistDirLayout
import Distribution.Client.ProjectConfig
import Distribution.Client.Config (defaultCabalDir)
import Distribution.Client.TargetSelector hiding (DirActions(..))
import qualified Distribution.Client.TargetSelector as TS (DirActions(..))
import Distribution.Client.ProjectPlanning
import Distribution.Client.ProjectPlanning.Types
import Distribution.Client.ProjectBuilding
import Distribution.Client.ProjectOrchestration
         ( resolveTargets, TargetProblemCommon(..), distinctTargetComponents )
import Distribution.Client.Types
         ( PackageLocation(..), UnresolvedSourcePackage
         , PackageSpecifier(..) )
import Distribution.Client.Targets
         ( UserConstraint(..), UserConstraintScope(UserAnyQualifier) )
import qualified Distribution.Client.InstallPlan as InstallPlan
import Distribution.Solver.Types.SourcePackage as SP
import Distribution.Solver.Types.ConstraintSource
         ( ConstraintSource(ConstraintSourceUnknown) )
import Distribution.Solver.Types.PackageConstraint
         ( PackageProperty(PackagePropertySource) )

import qualified Distribution.Client.CmdBuild   as CmdBuild
import qualified Distribution.Client.CmdRepl    as CmdRepl
import qualified Distribution.Client.CmdRun     as CmdRun
import qualified Distribution.Client.CmdTest    as CmdTest
import qualified Distribution.Client.CmdBench   as CmdBench
import qualified Distribution.Client.CmdHaddock as CmdHaddock

import Distribution.Package
import Distribution.PackageDescription
import qualified Distribution.Types.GenericPackageDescription as GPG
import Distribution.InstalledPackageInfo (InstalledPackageInfo)
import Distribution.Simple.Setup (toFlag, HaddockFlags(..), defaultHaddockFlags)
import Distribution.Simple.Compiler
import Distribution.System
import Distribution.Version
import Distribution.ModuleName (ModuleName)
import Distribution.Verbosity
import Distribution.Text

import Data.Monoid
import Data.List (sort)
import Data.String (IsString(..))
import qualified Data.Map as Map
import qualified Data.Set as Set
import Control.Monad
import Control.Exception hiding (assert)
import System.FilePath
import System.Directory

import Test.Tasty
import Test.Tasty.HUnit
import Test.Tasty.Options
import Data.Tagged (Tagged(..))
import Data.Proxy  (Proxy(..))
import Data.Typeable (Typeable)


main :: IO ()
main =
  defaultMainWithIngredients
    (defaultIngredients ++ [includingOptions projectConfigOptionDescriptions])
    (withProjectConfig $ \config ->
      testGroup "Integration tests (internal)"
                (tests config))


tests :: ProjectConfig -> [TestTree]
tests config =
    --TODO: tests for:
    -- * normal success
    -- * dry-run tests with changes
  [ testGroup "Discovery and planning" $
    [ testCase "find root"      testFindProjectRoot
    , testCase "find root fail" testExceptionFindProjectRoot
    , testCase "no package"    (testExceptionInFindingPackage config)
    , testCase "no package2"   (testExceptionInFindingPackage2 config)
    , testCase "proj conf1"    (testExceptionInProjectConfig config)
    ]
  , testGroup "Target selectors" $
    [ testCaseSteps "valid"             testTargetSelectors
    , testCase      "bad syntax"        testTargetSelectorBadSyntax
    , testCaseSteps "ambiguous syntax"  testTargetSelectorAmbiguous
    , testCase      "no current pkg"    testTargetSelectorNoCurrentPackage
    , testCase      "no targets"        testTargetSelectorNoTargets
    , testCase      "project empty"     testTargetSelectorProjectEmpty
    , testCase      "problems (common)"  (testTargetProblemsCommon config)
    , testCaseSteps "problems (build)"   (testTargetProblemsBuild config)
    , testCaseSteps "problems (repl)"    (testTargetProblemsRepl config)
    , testCaseSteps "problems (run)"     (testTargetProblemsRun config)
    , testCaseSteps "problems (test)"    (testTargetProblemsTest config)
    , testCaseSteps "problems (bench)"   (testTargetProblemsBench config)
    , testCaseSteps "problems (haddock)" (testTargetProblemsHaddock config)
    ]
  , testGroup "Exceptions during building (local inplace)" $
    [ testCase "configure"   (testExceptionInConfigureStep config)
    , testCase "build"       (testExceptionInBuildStep config)
--    , testCase "register"   testExceptionInRegisterStep
    ]
    --TODO: need to repeat for packages for the store
    --TODO: need to check we can build sub-libs, foreign libs and exes
    -- components for non-local packages / packages in the store.

  , testGroup "Successful builds" $
    [ testCaseSteps "Setup script styles" (testSetupScriptStyles config)
    , testCase      "keep-going"          (testBuildKeepGoing config)
    ]

  , testGroup "Regression tests" $
    [ testCase "issue #3324" (testRegressionIssue3324 config)
    ]
  ]


testFindProjectRoot :: Assertion
testFindProjectRoot = do
    Left (BadProjectRootExplicitFile file) <- findProjectRoot (Just testdir)
                                                              (Just testfile)
    file @?= testfile
  where
    testdir  = basedir </> "exception" </> "no-pkg2"
    testfile = "bklNI8O1OpOUuDu3F4Ij4nv3oAqN"


testExceptionFindProjectRoot :: Assertion
testExceptionFindProjectRoot = do
    Right (ProjectRootExplicit dir _) <- findProjectRoot (Just testdir) Nothing
    cwd <- getCurrentDirectory
    dir @?= cwd </> testdir
  where
    testdir = basedir </> "exception" </> "no-pkg2"


testTargetSelectors :: (String -> IO ()) -> Assertion
testTargetSelectors reportSubCase = do
    (_, _, _, localPackages, _) <- configureProject testdir config
    let readTargetSelectors' = readTargetSelectorsWith (dirActions testdir)
                                                       localPackages

    reportSubCase "cwd"
    do Right ts <- readTargetSelectors' []
       ts @?= [TargetPackage TargetImplicitCwd ["p-0.1"] Nothing]

    reportSubCase "all"
    do Right ts <- readTargetSelectors'
                     ["all", ":all"]
       ts @?= replicate 2 (TargetAllPackages Nothing)

    reportSubCase "filter"
    do Right ts <- readTargetSelectors'
                     [ "libs",  ":cwd:libs"
                     , "flibs", ":cwd:flibs"
                     , "exes",  ":cwd:exes"
                     , "tests", ":cwd:tests"
                     , "benchmarks", ":cwd:benchmarks"]
       zipWithM_ (@?=) ts
         [ TargetPackage TargetImplicitCwd ["p-0.1"] (Just kind)
         | kind <- concatMap (replicate 2) [LibKind .. ]
         ]

    reportSubCase "all:filter"
    do Right ts <- readTargetSelectors'
                     [ "all:libs",  ":all:libs"
                     , "all:flibs", ":all:flibs"
                     , "all:exes",  ":all:exes"
                     , "all:tests", ":all:tests"
                     , "all:benchmarks", ":all:benchmarks"]
       zipWithM_ (@?=) ts
         [ TargetAllPackages (Just kind)
         | kind <- concatMap (replicate 2) [LibKind .. ]
         ]

    reportSubCase "pkg"
    do Right ts <- readTargetSelectors'
                     [       ":pkg:p", ".",  "./",   "p.cabal"
                     , "q",  ":pkg:q", "q/", "./q/", "q/q.cabal"]
       ts @?= replicate 4 (mkTargetPackage "p-0.1")
           ++ replicate 5 (mkTargetPackage "q-0.1")

    reportSubCase "pkg:filter"
    do Right ts <- readTargetSelectors'
                     [ "p:libs",  ".:libs",  ":pkg:p:libs"
                     , "p:flibs", ".:flibs", ":pkg:p:flibs"
                     , "p:exes",  ".:exes",  ":pkg:p:exes"
                     , "p:tests", ".:tests",  ":pkg:p:tests"
                     , "p:benchmarks", ".:benchmarks", ":pkg:p:benchmarks"
                     , "q:libs",  "q/:libs", ":pkg:q:libs"
                     , "q:flibs", "q/:flibs", ":pkg:q:flibs"
                     , "q:exes",  "q/:exes", ":pkg:q:exes"
                     , "q:tests", "q/:tests", ":pkg:q:tests"
                     , "q:benchmarks", "q/:benchmarks", ":pkg:q:benchmarks"]
       zipWithM_ (@?=) ts $
         [ TargetPackage TargetExplicitNamed ["p-0.1"] (Just kind)
         | kind <- concatMap (replicate 3) [LibKind .. ]
         ] ++
         [ TargetPackage TargetExplicitNamed ["q-0.1"] (Just kind)
         | kind <- concatMap (replicate 3) [LibKind .. ]
         ]

    reportSubCase "component"
    do Right ts <- readTargetSelectors'
                     [ "p", "lib:p", "p:lib:p", ":pkg:p:lib:p"
                     ,      "lib:q", "q:lib:q", ":pkg:q:lib:q" ]
       ts @?= replicate 4 (TargetComponent "p-0.1" CLibName WholeComponent)
           ++ replicate 3 (TargetComponent "q-0.1" CLibName WholeComponent)

    reportSubCase "module"
    do Right ts <- readTargetSelectors'
                     [ "P", "lib:p:P", "p:p:P", ":pkg:p:lib:p:module:P"
                     , "QQ", "lib:q:QQ", "q:q:QQ", ":pkg:q:lib:q:module:QQ"
                     , "pexe:PMain" -- p:P or q:QQ would be ambiguous here
                     , "qexe:QMain" -- package p vs component p
                     ]
       ts @?= replicate 4 (TargetComponent "p-0.1" CLibName (ModuleTarget "P"))
           ++ replicate 4 (TargetComponent "q-0.1" CLibName (ModuleTarget "QQ"))
           ++ [ TargetComponent "p-0.1" (CExeName "pexe") (ModuleTarget "PMain")
              , TargetComponent "q-0.1" (CExeName "qexe") (ModuleTarget "QMain")
              ]

    reportSubCase "file"
    do Right ts <- readTargetSelectors'
                     [ "./P.hs", "p:P.lhs", "lib:p:P.hsc", "p:p:P.hsc",
                                 ":pkg:p:lib:p:file:P.y"
                     , "q/QQ.hs", "q:QQ.lhs", "lib:q:QQ.hsc", "q:q:QQ.hsc",
                                  ":pkg:q:lib:q:file:QQ.y"
                     ]
       ts @?= replicate 5 (TargetComponent "p-0.1" CLibName (FileTarget "P"))
           ++ replicate 5 (TargetComponent "q-0.1" CLibName (FileTarget "QQ"))
       -- Note there's a bit of an inconsistency here: for the single-part
       -- syntax the target has to point to a file that exists, whereas for
       -- all the other forms we don't require that.

    cleanProject testdir
  where
    testdir = "targets/simple"
    config  = mempty


testTargetSelectorBadSyntax :: Assertion
testTargetSelectorBadSyntax = do
    (_, _, _, localPackages, _) <- configureProject testdir config
    let targets = [ "foo bar",  " foo"
                  , "foo:", "foo::bar"
                  , "foo: ", "foo: :bar"
                  , "a:b:c:d:e:f", "a:b:c:d:e:f:g:h" ]
    Left errs <- readTargetSelectors localPackages targets
    zipWithM_ (@?=) errs (map TargetSelectorUnrecognised targets)
    cleanProject testdir
  where
    testdir = "targets/empty"
    config  = mempty


testTargetSelectorAmbiguous :: (String -> IO ()) -> Assertion
testTargetSelectorAmbiguous reportSubCase = do

    -- 'all' is ambiguous with packages and cwd components
    reportSubCase "ambiguous: all vs pkg"
    assertAmbiguous "all"
      [mkTargetPackage "all", mkTargetAllPackages]
      [mkpkg "all" []]

    reportSubCase "ambiguous: all vs cwd component"
    assertAmbiguous "all"
      [mkTargetComponent "other" (CExeName "all"), mkTargetAllPackages]
      [mkpkg "other" [mkexe "all"]]

    -- but 'all' is not ambiguous with non-cwd components, modules or files
    reportSubCase "unambiguous: all vs non-cwd comp, mod, file"
    assertUnambiguous "All"
      mkTargetAllPackages
      [ mkpkgAt "foo" [mkexe "All"] "foo"
      , mkpkg   "bar" [ mkexe "bar" `withModules` ["All"]
                      , mkexe "baz" `withCFiles` ["All"] ]
      ]

    -- filters 'libs', 'exes' etc are ambiguous with packages and
    -- local components
    reportSubCase "ambiguous: cwd-pkg filter vs pkg"
    assertAmbiguous "libs"
      [ mkTargetPackage "libs"
      , TargetPackage TargetImplicitCwd ["libs"] (Just LibKind) ]
      [mkpkg "libs" []]

    reportSubCase "ambiguous: filter vs cwd component"
    assertAmbiguous "exes"
      [ mkTargetComponent "other" (CExeName "exes")
      , TargetPackage TargetImplicitCwd ["other"] (Just ExeKind) ]
      [mkpkg "other" [mkexe "exes"]]

    -- but filters are not ambiguous with non-cwd components, modules or files
    reportSubCase "unambiguous: filter vs non-cwd comp, mod, file"
    assertUnambiguous "Libs"
      (TargetPackage TargetImplicitCwd ["bar"] (Just LibKind))
      [ mkpkgAt "foo" [mkexe "Libs"] "foo"
      , mkpkg   "bar" [ mkexe "bar" `withModules` ["Libs"]
                      , mkexe "baz" `withCFiles` ["Libs"] ]
      ]

    -- local components shadow packages and other components
    reportSubCase "unambiguous: cwd comp vs pkg, non-cwd comp"
    assertUnambiguous "foo"
      (mkTargetComponent "other" (CExeName "foo"))
      [ mkpkg   "other"  [mkexe "foo"]
      , mkpkgAt "other2" [mkexe "foo"] "other2" -- shadows non-local foo
      , mkpkg "foo" [] ]                        -- shadows package foo

    -- local components shadow modules and files
    reportSubCase "unambiguous: cwd comp vs module, file"
    assertUnambiguous "Foo"
      (mkTargetComponent "bar" (CExeName "Foo"))
      [ mkpkg "bar" [mkexe "Foo"]
      , mkpkg "other" [ mkexe "other"  `withModules` ["Foo"]
                      , mkexe "other2" `withCFiles`  ["Foo"] ]
      ]

    -- packages shadow non-local components
    reportSubCase "unambiguous: pkg vs non-cwd comp"
    assertUnambiguous "foo"
      (mkTargetPackage "foo")
      [ mkpkg "foo" []
      , mkpkgAt "other" [mkexe "foo"] "other" -- shadows non-local foo
      ]

    -- packages shadow modules and files
    reportSubCase "unambiguous: pkg vs module, file"
    assertUnambiguous "Foo"
      (mkTargetPackage "Foo")
      [ mkpkgAt "Foo" [] "foo"
      , mkpkg "other" [ mkexe "other"  `withModules` ["Foo"]
                      , mkexe "other2" `withCFiles`  ["Foo"] ]
      ]

    -- non-exact case packages and components are ambiguous
    reportSubCase "ambiguous: non-exact-case pkg names"
    assertAmbiguous "Foo"
      [ mkTargetPackage "foo", mkTargetPackage "FOO" ]
      [ mkpkg "foo" [], mkpkg "FOO" [] ]
    reportSubCase "ambiguous: non-exact-case comp names"
    assertAmbiguous "Foo"
      [ mkTargetComponent "bar" (CExeName "foo")
      , mkTargetComponent "bar" (CExeName "FOO") ]
      [ mkpkg "bar" [mkexe "foo", mkexe "FOO"] ]

    -- exact-case Module or File over non-exact case package or component
    reportSubCase "unambiguous: module vs non-exact-case pkg, comp"
    assertUnambiguous "Baz"
      (mkTargetModule "other" (CExeName "other") "Baz")
      [ mkpkg "baz" [mkexe "BAZ"]
      , mkpkg "other" [ mkexe "other"  `withModules` ["Baz"] ]
      ]
    reportSubCase "unambiguous: file vs non-exact-case pkg, comp"
    assertUnambiguous "Baz"
      (mkTargetFile "other" (CExeName "other") "Baz")
      [ mkpkg "baz" [mkexe "BAZ"]
      , mkpkg "other" [ mkexe "other"  `withCFiles` ["Baz"] ]
      ]
  where
    assertAmbiguous :: String
                    -> [TargetSelector]
                    -> [SourcePackage (PackageLocation a)]
                    -> Assertion
    assertAmbiguous str tss pkgs = do
      res <- readTargetSelectorsWith
               fakeDirActions
               (map SpecificSourcePackage pkgs)
               [str]
      case res of
        Left [TargetSelectorAmbiguous _ tss'] ->
          sort (map snd tss') @?= sort tss
        _ -> assertFailure $ "expected Left [TargetSelectorAmbiguous _ _], "
                          ++ "got " ++ show res

    assertUnambiguous :: String
                      -> TargetSelector
                      -> [SourcePackage (PackageLocation a)]
                      -> Assertion
    assertUnambiguous str ts pkgs = do
      res <- readTargetSelectorsWith
               fakeDirActions
               (map SpecificSourcePackage pkgs)
               [str]
      case res of
        Right [ts'] -> ts' @?= ts
        _ -> assertFailure $ "expected Right [Target...], "
                          ++ "got " ++ show res

    fakeDirActions = TS.DirActions {
      TS.doesFileExist       = \_p -> return True,
      TS.doesDirectoryExist  = \_p -> return True,
      TS.canonicalizePath    = \p -> return ("/" </> p), -- FilePath.Unix.</> ?
      TS.getCurrentDirectory = return "/"
    }

    mkpkg :: String -> [Executable] -> SourcePackage (PackageLocation a)
    mkpkg pkgidstr exes = mkpkgAt pkgidstr exes ""

    mkpkgAt :: String -> [Executable] -> FilePath
            -> SourcePackage (PackageLocation a)
    mkpkgAt pkgidstr exes loc =
      SourcePackage {
        packageInfoId = pkgid,
        packageSource = LocalUnpackedPackage loc,
        packageDescrOverride  = Nothing,
        SP.packageDescription = GenericPackageDescription {
          GPG.packageDescription = emptyPackageDescription { package = pkgid },
          genPackageFlags    = [],
          condLibrary        = Nothing,
          condSubLibraries   = [],
          condForeignLibs    = [],
          condExecutables    = [ ( exeName exe, CondNode exe [] [] )
                               | exe <- exes ],
          condTestSuites     = [],
          condBenchmarks     = []
        }
      }
      where
        Just pkgid = simpleParse pkgidstr

    mkexe :: String -> Executable
    mkexe name = mempty { exeName = fromString name }

    withModules :: Executable -> [String] -> Executable
    withModules exe mods =
      exe { buildInfo = (buildInfo exe) { otherModules = map fromString mods } }

    withCFiles :: Executable -> [FilePath] -> Executable
    withCFiles exe files =
      exe { buildInfo = (buildInfo exe) { cSources = files } }


mkTargetPackage :: PackageId -> TargetSelector
mkTargetPackage pkgid =
    TargetPackage TargetExplicitNamed [pkgid] Nothing

mkTargetComponent :: PackageId -> ComponentName -> TargetSelector
mkTargetComponent pkgid cname =
    TargetComponent pkgid cname WholeComponent

mkTargetModule :: PackageId -> ComponentName -> ModuleName -> TargetSelector
mkTargetModule pkgid cname mname =
    TargetComponent pkgid cname (ModuleTarget mname)

mkTargetFile :: PackageId -> ComponentName -> String -> TargetSelector
mkTargetFile pkgid cname fname =
    TargetComponent pkgid cname (FileTarget fname)

mkTargetAllPackages :: TargetSelector
mkTargetAllPackages = TargetAllPackages Nothing

instance IsString PackageIdentifier where
    fromString pkgidstr = pkgid
      where Just pkgid = simpleParse pkgidstr


testTargetSelectorNoCurrentPackage :: Assertion
testTargetSelectorNoCurrentPackage = do
    (_, _, _, localPackages, _) <- configureProject testdir config
    let readTargetSelectors' = readTargetSelectorsWith (dirActions testdir)
                                                       localPackages
        targets = [ "libs",  ":cwd:libs"
                  , "flibs", ":cwd:flibs"
                  , "exes",  ":cwd:exes"
                  , "tests", ":cwd:tests"
                  , "benchmarks", ":cwd:benchmarks"]
    Left errs <- readTargetSelectors' targets
    zipWithM_ (@?=) errs
      [ TargetSelectorNoCurrentPackage ts
      | target <- targets
      , let Just ts = parseTargetString target
      ]
    cleanProject testdir
  where
    testdir = "targets/complex"
    config  = mempty


testTargetSelectorNoTargets :: Assertion
testTargetSelectorNoTargets = do
    (_, _, _, localPackages, _) <- configureProject testdir config
    Left errs <- readTargetSelectors localPackages []
    errs @?= [TargetSelectorNoTargetsInCwd]
    cleanProject testdir
  where
    testdir = "targets/complex"
    config  = mempty


testTargetSelectorProjectEmpty :: Assertion
testTargetSelectorProjectEmpty = do
    (_, _, _, localPackages, _) <- configureProject testdir config
    Left errs <- readTargetSelectors localPackages []
    errs @?= [TargetSelectorNoTargetsInProject]
    cleanProject testdir
  where
    testdir = "targets/empty"
    config  = mempty


testTargetProblemsCommon :: ProjectConfig -> Assertion
testTargetProblemsCommon config0 = do
    (_,elaboratedPlan,_) <- planProject testdir config

    let pkgIdMap :: Map.Map PackageName PackageId
        pkgIdMap = Map.fromList
                     [ (packageName p, packageId p)
                     | p <- InstallPlan.toList elaboratedPlan ]

        cases :: [( TargetSelector -> CmdBuild.TargetProblem
                  , TargetSelector
                  )]
        cases =
          [ -- Cannot resolve packages outside of the project
            ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetProblemNoSuchPackage "foobar"
            , mkTargetPackage "foobar" )

            -- We cannot currently build components like testsuites or
            -- benchmarks from packages that are not local to the project
          , ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetComponentNotProjectLocal
                      (pkgIdMap Map.! "filepath") (CTestName "filepath-tests")
                      WholeComponent
            , mkTargetComponent (pkgIdMap Map.! "filepath")
                                (CTestName "filepath-tests") )

            -- Components can be explicitly @buildable: False@
          , ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetComponentNotBuildable "q-0.1" (CExeName "buildable-false") WholeComponent
            , mkTargetComponent "q-0.1" (CExeName "buildable-false") )

            -- Testsuites and benchmarks can be disabled by the solver if it
            -- cannot satisfy deps
          , ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetOptionalStanzaDisabledBySolver "q-0.1" (CTestName "solver-disabled") WholeComponent
            , mkTargetComponent "q-0.1" (CTestName "solver-disabled") )

            -- Testsuites and benchmarks can be disabled explicitly by the
            -- user via config
          , ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetOptionalStanzaDisabledByUser
                      "q-0.1" (CBenchName "user-disabled") WholeComponent
            , mkTargetComponent "q-0.1" (CBenchName "user-disabled") )

            -- An unknown package. The target selector resolution should only
            -- produce known packages, so this should not happen with the
            -- output from 'readTargetSelectors'.
          , ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetProblemNoSuchPackage "foobar"
            , mkTargetPackage "foobar" )

            -- An unknown component of a known package. The target selector
            -- resolution should only produce known packages, so this should
            -- not happen with the output from 'readTargetSelectors'.
          , ( \_ -> CmdBuild.TargetProblemCommon $
                    TargetProblemNoSuchComponent "q-0.1" (CExeName "no-such")
            , mkTargetComponent "q-0.1" (CExeName "no-such") )
          ]
    assertTargetProblems
      elaboratedPlan
      CmdBuild.selectPackageTargets
      CmdBuild.selectComponentTarget
      CmdBuild.TargetProblemCommon
      cases
  where
    testdir = "targets/complex"
    config  = config0 {
      projectConfigLocalPackages = (projectConfigLocalPackages config0) {
        packageConfigBenchmarks = toFlag False
      }
    , projectConfigShared = (projectConfigShared config0) {
        projectConfigConstraints =
          [( UserConstraint (UserAnyQualifier "filepath") PackagePropertySource
           , ConstraintSourceUnknown )]
      }
    }


testTargetProblemsBuild :: ProjectConfig -> (String -> IO ()) -> Assertion
testTargetProblemsBuild config reportSubCase = do

    reportSubCase "empty-pkg"
    assertProjectTargetProblems
      "targets/empty-pkg" config
      CmdBuild.selectPackageTargets
      CmdBuild.selectComponentTarget
      CmdBuild.TargetProblemCommon
      [ ( CmdBuild.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
      ]

    reportSubCase "all-disabled"
    assertProjectTargetProblems
      "targets/all-disabled"
      config {
        projectConfigLocalPackages = (projectConfigLocalPackages config) {
          packageConfigBenchmarks = toFlag False
        }
      }
      CmdBuild.selectPackageTargets
      CmdBuild.selectComponentTarget
      CmdBuild.TargetProblemCommon
      [ ( flip CmdBuild.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CBenchName "user-disabled")
                                 TargetDisabledByUser True
               , AvailableTarget "p-0.1" (CTestName "solver-disabled")
                                 TargetDisabledBySolver True
               , AvailableTarget "p-0.1" (CExeName "buildable-false")
                                 TargetNotBuildable True
               , AvailableTarget "p-0.1" CLibName
                                 TargetNotBuildable True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "enabled component kinds"
    -- When we explicitly enable all the component kinds then selecting the
    -- whole package selects those component kinds too
    do (_,elaboratedPlan,_) <- planProject "targets/variety" config {
           projectConfigLocalPackages = (projectConfigLocalPackages config) {
             packageConfigTests      = toFlag True,
             packageConfigBenchmarks = toFlag True
           }
         }
       assertProjectDistinctTargets
         elaboratedPlan
         CmdBuild.selectPackageTargets
         CmdBuild.selectComponentTarget
         CmdBuild.TargetProblemCommon
         [ mkTargetPackage "p-0.1" ]
         [ ("p-0.1-inplace",             CLibName)
         , ("p-0.1-inplace-a-benchmark", CBenchName "a-benchmark")
         , ("p-0.1-inplace-a-testsuite", CTestName  "a-testsuite")
         , ("p-0.1-inplace-an-exe",      CExeName   "an-exe")
         , ("p-0.1-inplace-libp",        CFLibName  "libp")
         ]

    reportSubCase "disabled component kinds"
    -- When we explicitly disable all the component kinds then selecting the
    -- whole package only selects the library, foreign lib and exes
    do (_,elaboratedPlan,_) <- planProject "targets/variety" config {
           projectConfigLocalPackages = (projectConfigLocalPackages config) {
             packageConfigTests      = toFlag False,
             packageConfigBenchmarks = toFlag False
           }
         }
       assertProjectDistinctTargets
         elaboratedPlan
         CmdBuild.selectPackageTargets
         CmdBuild.selectComponentTarget
         CmdBuild.TargetProblemCommon
         [ mkTargetPackage "p-0.1" ]
         [ ("p-0.1-inplace",        CLibName)
         , ("p-0.1-inplace-an-exe", CExeName  "an-exe")
         , ("p-0.1-inplace-libp",   CFLibName "libp")
         ]

    reportSubCase "requested component kinds"
    -- When we selecting the package with an explicit filter then we get those
    -- components even though we did not explicitly enable tests/benchmarks
    do (_,elaboratedPlan,_) <- planProject "targets/variety" config
       assertProjectDistinctTargets
         elaboratedPlan
         CmdBuild.selectPackageTargets
         CmdBuild.selectComponentTarget
         CmdBuild.TargetProblemCommon
         [ TargetPackage TargetExplicitNamed ["p-0.1"] (Just TestKind)
         , TargetPackage TargetExplicitNamed ["p-0.1"] (Just BenchKind)
         ]
         [ ("p-0.1-inplace-a-benchmark", CBenchName "a-benchmark")
         , ("p-0.1-inplace-a-testsuite", CTestName  "a-testsuite")
         ]


testTargetProblemsRepl :: ProjectConfig -> (String -> IO ()) -> Assertion
testTargetProblemsRepl config reportSubCase = do

    reportSubCase "multiple-libs"
    assertProjectTargetProblems
      "targets/multiple-libs" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( flip CmdRepl.TargetProblemMatchesMultiple
               [ AvailableTarget "p-0.1" CLibName
                   (TargetBuildable () TargetRequestedByDefault) True
               , AvailableTarget "q-0.1" CLibName
                   (TargetBuildable () TargetRequestedByDefault) True
               ]
        , mkTargetAllPackages )
      ]

    reportSubCase "multiple-exes"
    assertProjectTargetProblems
      "targets/multiple-exes" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( flip CmdRepl.TargetProblemMatchesMultiple
               [ AvailableTarget "p-0.1" (CExeName "p2")
                   (TargetBuildable () TargetRequestedByDefault) True
               , AvailableTarget "p-0.1" (CExeName "p1")
                   (TargetBuildable () TargetRequestedByDefault) True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "multiple-tests"
    assertProjectTargetProblems
      "targets/multiple-tests" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( flip CmdRepl.TargetProblemMatchesMultiple
               [ AvailableTarget "p-0.1" (CTestName "p2")
                   (TargetBuildable () TargetNotRequestedByDefault) True
               , AvailableTarget "p-0.1" (CTestName "p1")
                   (TargetBuildable () TargetNotRequestedByDefault) True
               ]
        , TargetPackage TargetExplicitNamed ["p-0.1"] (Just TestKind) )
      ]

    reportSubCase "multiple targets"
    do (_,elaboratedPlan,_) <- planProject "targets/multiple-exes" config
       assertProjectDistinctTargets
         elaboratedPlan
         CmdRepl.selectPackageTargets
         CmdRepl.selectComponentTarget
         CmdRepl.TargetProblemCommon
         [ mkTargetComponent "p-0.1" (CExeName "p1")
         , mkTargetComponent "p-0.1" (CExeName "p2")
         ]
         [ ("p-0.1-inplace-p1", CExeName "p1")
         , ("p-0.1-inplace-p2", CExeName "p2")
         ]

    reportSubCase "libs-disabled"
    assertProjectTargetProblems
      "targets/libs-disabled" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( flip CmdRepl.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" CLibName TargetNotBuildable True ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "exes-disabled"
    assertProjectTargetProblems
      "targets/exes-disabled" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( flip CmdRepl.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CExeName "p") TargetNotBuildable True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "test-only"
    assertProjectTargetProblems
      "targets/test-only" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( flip CmdRepl.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CTestName "pexe")
                   (TargetBuildable () TargetNotRequestedByDefault) True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "empty-pkg"
    assertProjectTargetProblems
      "targets/empty-pkg" config
      CmdRepl.selectPackageTargets
      CmdRepl.selectComponentTarget
      CmdRepl.TargetProblemCommon
      [ ( CmdRepl.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
      ]

    reportSubCase "requested component kinds"
    do (_,elaboratedPlan,_) <- planProject "targets/variety" config
       -- by default we only get the lib
       assertProjectDistinctTargets
         elaboratedPlan
         CmdRepl.selectPackageTargets
         CmdRepl.selectComponentTarget
         CmdRepl.TargetProblemCommon
         [ TargetPackage TargetExplicitNamed ["p-0.1"] Nothing ]
         [ ("p-0.1-inplace", CLibName) ]
       -- When we select the package with an explicit filter then we get those
       -- components even though we did not explicitly enable tests/benchmarks
       assertProjectDistinctTargets
         elaboratedPlan
         CmdRepl.selectPackageTargets
         CmdRepl.selectComponentTarget
         CmdRepl.TargetProblemCommon
         [ TargetPackage TargetExplicitNamed ["p-0.1"] (Just TestKind) ]
         [ ("p-0.1-inplace-a-testsuite", CTestName  "a-testsuite") ]
       assertProjectDistinctTargets
         elaboratedPlan
         CmdRepl.selectPackageTargets
         CmdRepl.selectComponentTarget
         CmdRepl.TargetProblemCommon
         [ TargetPackage TargetExplicitNamed ["p-0.1"] (Just BenchKind) ]
         [ ("p-0.1-inplace-a-benchmark", CBenchName "a-benchmark") ]


testTargetProblemsRun :: ProjectConfig -> (String -> IO ()) -> Assertion
testTargetProblemsRun config reportSubCase = do

    reportSubCase "multiple-exes"
    assertProjectTargetProblems
      "targets/multiple-exes" config
      CmdRun.selectPackageTargets
      CmdRun.selectComponentTarget
      CmdRun.TargetProblemCommon
      [ ( flip CmdRun.TargetProblemMatchesMultiple
               [ AvailableTarget "p-0.1" (CExeName "p2")
                   (TargetBuildable () TargetRequestedByDefault) True
               , AvailableTarget "p-0.1" (CExeName "p1")
                   (TargetBuildable () TargetRequestedByDefault) True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "multiple targets"
    do (_,elaboratedPlan,_) <- planProject "targets/multiple-exes" config
       assertProjectDistinctTargets
         elaboratedPlan
         CmdRun.selectPackageTargets
         CmdRun.selectComponentTarget
         CmdRun.TargetProblemCommon
         [ mkTargetComponent "p-0.1" (CExeName "p1")
         , mkTargetComponent "p-0.1" (CExeName "p2")
         ]
         [ ("p-0.1-inplace-p1", CExeName "p1")
         , ("p-0.1-inplace-p2", CExeName "p2")
         ]

    reportSubCase "exes-disabled"
    assertProjectTargetProblems
      "targets/exes-disabled" config
      CmdRun.selectPackageTargets
      CmdRun.selectComponentTarget
      CmdRun.TargetProblemCommon
      [ ( flip CmdRun.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CExeName "p") TargetNotBuildable True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "empty-pkg"
    assertProjectTargetProblems
      "targets/empty-pkg" config
      CmdRun.selectPackageTargets
      CmdRun.selectComponentTarget
      CmdRun.TargetProblemCommon
      [ ( CmdRun.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
      ]

    reportSubCase "lib-only"
    assertProjectTargetProblems
      "targets/lib-only" config
      CmdRun.selectPackageTargets
      CmdRun.selectComponentTarget
      CmdRun.TargetProblemCommon
      [ ( CmdRun.TargetProblemNoExes, mkTargetPackage "p-0.1" )
      ]


testTargetProblemsTest :: ProjectConfig -> (String -> IO ()) -> Assertion
testTargetProblemsTest config reportSubCase = do

    reportSubCase "disabled by config"
    assertProjectTargetProblems
      "targets/tests-disabled"
      config {
        projectConfigLocalPackages = (projectConfigLocalPackages config) {
          packageConfigTests = toFlag False
        }
      }
      CmdTest.selectPackageTargets
      CmdTest.selectComponentTarget
      CmdTest.TargetProblemCommon
      [ ( flip CmdTest.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CTestName "user-disabled")
                                 TargetDisabledByUser True
               , AvailableTarget "p-0.1" (CTestName "solver-disabled")
                                 TargetDisabledByUser True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "disabled by solver & buildable false"
    assertProjectTargetProblems
      "targets/tests-disabled"
      config
      CmdTest.selectPackageTargets
      CmdTest.selectComponentTarget
      CmdTest.TargetProblemCommon
      [ ( flip CmdTest.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CTestName "user-disabled")
                                 TargetDisabledBySolver True
               , AvailableTarget "p-0.1" (CTestName "solver-disabled")
                                 TargetDisabledBySolver True
               ]
        , mkTargetPackage "p-0.1" )

      , ( flip CmdTest.TargetProblemNoneEnabled
               [ AvailableTarget "q-0.1" (CTestName "buildable-false")
                                 TargetNotBuildable True
               ]
        , mkTargetPackage "q-0.1" )
      ]

    reportSubCase "empty-pkg"
    assertProjectTargetProblems
      "targets/empty-pkg" config
      CmdTest.selectPackageTargets
      CmdTest.selectComponentTarget
      CmdTest.TargetProblemCommon
      [ ( CmdTest.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
      ]

    reportSubCase "no tests"
    assertProjectTargetProblems
      "targets/simple"
      config
      CmdTest.selectPackageTargets
      CmdTest.selectComponentTarget
      CmdTest.TargetProblemCommon
      [ ( CmdTest.TargetProblemNoTests, mkTargetPackage "p-0.1" )
      , ( CmdTest.TargetProblemNoTests, mkTargetPackage "q-0.1" )
      ]

    reportSubCase "not a test"
    assertProjectTargetProblems
      "targets/variety"
      config
      CmdTest.selectPackageTargets
      CmdTest.selectComponentTarget
      CmdTest.TargetProblemCommon $
      [ ( const (CmdTest.TargetProblemComponentNotTest
                  "p-0.1" CLibName)
        , mkTargetComponent "p-0.1" CLibName )

      , ( const (CmdTest.TargetProblemComponentNotTest
                  "p-0.1" (CExeName "an-exe"))
        , mkTargetComponent "p-0.1" (CExeName "an-exe") )

      , ( const (CmdTest.TargetProblemComponentNotTest
                  "p-0.1" (CFLibName "libp"))
        , mkTargetComponent "p-0.1" (CFLibName "libp") )

      , ( const (CmdTest.TargetProblemComponentNotTest
                  "p-0.1" (CBenchName "a-benchmark"))
        , mkTargetComponent "p-0.1" (CBenchName "a-benchmark") )
      ] ++
      [ ( const (CmdTest.TargetProblemIsSubComponent
                          "p-0.1" cname (ModuleTarget modname))
        , mkTargetModule "p-0.1" cname modname )
      | (cname, modname) <- [ (CTestName  "a-testsuite", "TestModule")
                            , (CBenchName "a-benchmark", "BenchModule")
                            , (CExeName   "an-exe",      "ExeModule")
                            , (CLibName,                 "P")
                            ]
      ] ++
      [ ( const (CmdTest.TargetProblemIsSubComponent
                          "p-0.1" cname (FileTarget fname))
        , mkTargetFile "p-0.1" cname fname)
      | (cname, fname) <- [ (CTestName  "a-testsuite", "Test.hs")
                          , (CBenchName "a-benchmark", "Bench.hs")
                          , (CExeName   "an-exe",      "Main.hs")
                          ]
      ]


testTargetProblemsBench :: ProjectConfig -> (String -> IO ()) -> Assertion
testTargetProblemsBench config reportSubCase = do

    reportSubCase "disabled by config"
    assertProjectTargetProblems
      "targets/benchmarks-disabled"
      config {
        projectConfigLocalPackages = (projectConfigLocalPackages config) {
          packageConfigBenchmarks = toFlag False
        }
      }
      CmdBench.selectPackageTargets
      CmdBench.selectComponentTarget
      CmdBench.TargetProblemCommon
      [ ( flip CmdBench.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CBenchName "user-disabled")
                                 TargetDisabledByUser True
               , AvailableTarget "p-0.1" (CBenchName "solver-disabled")
                                 TargetDisabledByUser True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "disabled by solver & buildable false"
    assertProjectTargetProblems
      "targets/benchmarks-disabled"
      config
      CmdBench.selectPackageTargets
      CmdBench.selectComponentTarget
      CmdBench.TargetProblemCommon
      [ ( flip CmdBench.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CBenchName "user-disabled")
                                 TargetDisabledBySolver True
               , AvailableTarget "p-0.1" (CBenchName "solver-disabled")
                                 TargetDisabledBySolver True
               ]
        , mkTargetPackage "p-0.1" )

      , ( flip CmdBench.TargetProblemNoneEnabled
               [ AvailableTarget "q-0.1" (CBenchName "buildable-false")
                                 TargetNotBuildable True
               ]
        , mkTargetPackage "q-0.1" )
      ]

    reportSubCase "empty-pkg"
    assertProjectTargetProblems
      "targets/empty-pkg" config
      CmdBench.selectPackageTargets
      CmdBench.selectComponentTarget
      CmdBench.TargetProblemCommon
      [ ( CmdBench.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
      ]

    reportSubCase "no benchmarks"
    assertProjectTargetProblems
      "targets/simple"
      config
      CmdBench.selectPackageTargets
      CmdBench.selectComponentTarget
      CmdBench.TargetProblemCommon
      [ ( CmdBench.TargetProblemNoBenchmarks, mkTargetPackage "p-0.1" )
      , ( CmdBench.TargetProblemNoBenchmarks, mkTargetPackage "q-0.1" )
      ]

    reportSubCase "not a benchmark"
    assertProjectTargetProblems
      "targets/variety"
      config
      CmdBench.selectPackageTargets
      CmdBench.selectComponentTarget
      CmdBench.TargetProblemCommon $
      [ ( const (CmdBench.TargetProblemComponentNotBenchmark
                  "p-0.1" CLibName)
        , mkTargetComponent "p-0.1" CLibName )

      , ( const (CmdBench.TargetProblemComponentNotBenchmark
                  "p-0.1" (CExeName "an-exe"))
        , mkTargetComponent "p-0.1" (CExeName "an-exe") )

      , ( const (CmdBench.TargetProblemComponentNotBenchmark
                  "p-0.1" (CFLibName "libp"))
        , mkTargetComponent "p-0.1" (CFLibName "libp") )

      , ( const (CmdBench.TargetProblemComponentNotBenchmark
                  "p-0.1" (CTestName "a-testsuite"))
        , mkTargetComponent "p-0.1" (CTestName "a-testsuite") )
      ] ++
      [ ( const (CmdBench.TargetProblemIsSubComponent
                          "p-0.1" cname (ModuleTarget modname))
        , mkTargetModule "p-0.1" cname modname )
      | (cname, modname) <- [ (CTestName  "a-testsuite", "TestModule")
                            , (CBenchName "a-benchmark", "BenchModule")
                            , (CExeName   "an-exe",      "ExeModule")
                            , (CLibName,                 "P")
                            ]
      ] ++
      [ ( const (CmdBench.TargetProblemIsSubComponent
                          "p-0.1" cname (FileTarget fname))
        , mkTargetFile "p-0.1" cname fname)
      | (cname, fname) <- [ (CTestName  "a-testsuite", "Test.hs")
                          , (CBenchName "a-benchmark", "Bench.hs")
                          , (CExeName   "an-exe",      "Main.hs")
                          ]
      ]


testTargetProblemsHaddock :: ProjectConfig -> (String -> IO ()) -> Assertion
testTargetProblemsHaddock config reportSubCase = do

    reportSubCase "all-disabled"
    assertProjectTargetProblems
      "targets/all-disabled"
      config
      (let haddockFlags = mkHaddockFlags False True True False
        in CmdHaddock.selectPackageTargets haddockFlags)
      CmdHaddock.selectComponentTarget
      CmdHaddock.TargetProblemCommon
      [ ( flip CmdHaddock.TargetProblemNoneEnabled
               [ AvailableTarget "p-0.1" (CBenchName "user-disabled")
                                 TargetDisabledByUser True
               , AvailableTarget "p-0.1" (CTestName "solver-disabled")
                                 TargetDisabledBySolver True
               , AvailableTarget "p-0.1" (CExeName "buildable-false")
                                 TargetNotBuildable True
               , AvailableTarget "p-0.1" CLibName
                                 TargetNotBuildable True
               ]
        , mkTargetPackage "p-0.1" )
      ]

    reportSubCase "empty-pkg"
    assertProjectTargetProblems
      "targets/empty-pkg" config
      (let haddockFlags = mkHaddockFlags False False False False
        in CmdHaddock.selectPackageTargets haddockFlags)
      CmdHaddock.selectComponentTarget
      CmdHaddock.TargetProblemCommon
      [ ( CmdHaddock.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
      ]

    reportSubCase "enabled component kinds"
    -- When we explicitly enable all the component kinds then selecting the
    -- whole package selects those component kinds too
    (_,elaboratedPlan,_) <- planProject "targets/variety" config
    let haddockFlags = mkHaddockFlags True True True True
     in assertProjectDistinctTargets
          elaboratedPlan
          (CmdHaddock.selectPackageTargets haddockFlags)
          CmdHaddock.selectComponentTarget
          CmdHaddock.TargetProblemCommon
          [ mkTargetPackage "p-0.1" ]
          [ ("p-0.1-inplace",             CLibName)
          , ("p-0.1-inplace-a-benchmark", CBenchName "a-benchmark")
          , ("p-0.1-inplace-a-testsuite", CTestName  "a-testsuite")
          , ("p-0.1-inplace-an-exe",      CExeName   "an-exe")
          , ("p-0.1-inplace-libp",        CFLibName  "libp")
          ]

    reportSubCase "disabled component kinds"
    -- When we explicitly disable all the component kinds then selecting the
    -- whole package only selects the library
    let haddockFlags = mkHaddockFlags False False False False
     in assertProjectDistinctTargets
          elaboratedPlan
          (CmdHaddock.selectPackageTargets haddockFlags)
          CmdHaddock.selectComponentTarget
          CmdHaddock.TargetProblemCommon
          [ mkTargetPackage "p-0.1" ]
          [ ("p-0.1-inplace", CLibName) ]

    reportSubCase "requested component kinds"
    -- When we selecting the package with an explicit filter then it does not
    -- matter if the config was to disable all the component kinds
    let haddockFlags = mkHaddockFlags False False False False
     in assertProjectDistinctTargets
          elaboratedPlan
          (CmdHaddock.selectPackageTargets haddockFlags)
          CmdHaddock.selectComponentTarget
          CmdHaddock.TargetProblemCommon
          [ TargetPackage TargetExplicitNamed ["p-0.1"] (Just FLibKind)
          , TargetPackage TargetExplicitNamed ["p-0.1"] (Just ExeKind)
          , TargetPackage TargetExplicitNamed ["p-0.1"] (Just TestKind)
          , TargetPackage TargetExplicitNamed ["p-0.1"] (Just BenchKind)
          ]
          [ ("p-0.1-inplace-a-benchmark", CBenchName "a-benchmark")
          , ("p-0.1-inplace-a-testsuite", CTestName  "a-testsuite")
          , ("p-0.1-inplace-an-exe",      CExeName   "an-exe")
          , ("p-0.1-inplace-libp",        CFLibName  "libp")
          ]
  where
    mkHaddockFlags flib exe test bench =
      defaultHaddockFlags {
        haddockForeignLibs = toFlag flib,
        haddockExecutables = toFlag exe,
        haddockTestSuites  = toFlag test,
        haddockBenchmarks  = toFlag bench
      }

assertProjectDistinctTargets
  :: forall err. (Eq err, Show err) =>
     ElaboratedInstallPlan
  -> (forall k. TargetSelector -> [AvailableTarget k] -> Either err [k])
  -> (forall k. SubComponentTarget ->  AvailableTarget k  -> Either err  k )
  -> (TargetProblemCommon -> err)
  -> [TargetSelector]
  -> [(UnitId, ComponentName)]
  -> Assertion
assertProjectDistinctTargets elaboratedPlan
                             selectPackageTargets
                             selectComponentTarget
                             liftProblem
                             targetSelectors
                             expectedTargets
  | Right targets <- results
  = distinctTargetComponents targets @?= Set.fromList expectedTargets

  | otherwise
  = assertFailure $ "assertProjectDistinctTargets: expected "
                 ++ "(Right targets) but got " ++ show results
  where
    results = resolveTargets
                selectPackageTargets
                selectComponentTarget
                liftProblem
                elaboratedPlan
                targetSelectors


assertProjectTargetProblems
  :: forall err. (Eq err, Show err) =>
     FilePath -> ProjectConfig
  -> (forall k. TargetSelector
             -> [AvailableTarget k]
             -> Either err [k])
  -> (forall k. SubComponentTarget
             -> AvailableTarget k
             -> Either err k )
  -> (TargetProblemCommon -> err)
  -> [(TargetSelector -> err, TargetSelector)]
  -> Assertion
assertProjectTargetProblems testdir config
                            selectPackageTargets
                            selectComponentTarget
                            liftProblem
                            cases = do
    (_,elaboratedPlan,_) <- planProject testdir config
    assertTargetProblems
      elaboratedPlan
      selectPackageTargets
      selectComponentTarget
      liftProblem
      cases


assertTargetProblems
  :: forall err. (Eq err, Show err) =>
     ElaboratedInstallPlan
  -> (forall k. TargetSelector -> [AvailableTarget k] -> Either err [k])
  -> (forall k. SubComponentTarget ->  AvailableTarget k  -> Either err  k )
  -> (TargetProblemCommon -> err)
  -> [(TargetSelector -> err, TargetSelector)]
  -> Assertion
assertTargetProblems elaboratedPlan
                     selectPackageTargets
                     selectComponentTarget
                     liftProblem =
    mapM_ (uncurry assertTargetProblem)
  where
    assertTargetProblem expected targetSelector =
      let res = resolveTargets selectPackageTargets selectComponentTarget
                               liftProblem elaboratedPlan [targetSelector] in
      case res of
        Left [problem] ->
          problem @?= expected targetSelector

        unexpected ->
          assertFailure $ "expected resolveTargets result: (Left [problem]) "
                       ++ "but got: " ++ show unexpected


testExceptionInFindingPackage :: ProjectConfig -> Assertion
testExceptionInFindingPackage config = do
    BadPackageLocations _ locs <- expectException "BadPackageLocations" $
      void $ planProject testdir config
    case locs of
      [BadLocGlobEmptyMatch "./*.cabal"] -> return ()
      _ -> assertFailure "expected BadLocGlobEmptyMatch"
    cleanProject testdir
  where
    testdir = "exception/no-pkg"


testExceptionInFindingPackage2 :: ProjectConfig -> Assertion
testExceptionInFindingPackage2 config = do
    BadPackageLocations _ locs <- expectException "BadPackageLocations" $
      void $ planProject testdir config
    case locs of
      [BadPackageLocationFile (BadLocDirNoCabalFile ".")] -> return ()
      _ -> assertFailure $ "expected BadLocDirNoCabalFile, got " ++ show locs
    cleanProject testdir
  where
    testdir = "exception/no-pkg2"


testExceptionInProjectConfig :: ProjectConfig -> Assertion
testExceptionInProjectConfig config = do
    BadPerPackageCompilerPaths ps <- expectException "BadPerPackageCompilerPaths" $
      void $ planProject testdir config
    case ps of
      [(pn,"ghc")] | "foo" == pn -> return ()
      _ -> assertFailure $ "expected (PackageName \"foo\",\"ghc\"), got "
                        ++ show ps
    cleanProject testdir
  where
    testdir = "exception/bad-config"


testExceptionInConfigureStep :: ProjectConfig -> Assertion
testExceptionInConfigureStep config = do
    (plan, res) <- executePlan =<< planProject testdir config
    (_pkga1, failure) <- expectPackageFailed plan res pkgidA1
    case buildFailureReason failure of
      ConfigureFailed _ -> return ()
      _ -> assertFailure $ "expected ConfigureFailed, got " ++ show failure 
    cleanProject testdir
  where
    testdir = "exception/configure"
    pkgidA1 = PackageIdentifier "a" (mkVersion [1])


testExceptionInBuildStep :: ProjectConfig -> Assertion
testExceptionInBuildStep config = do
    (plan, res) <- executePlan =<< planProject testdir config
    (_pkga1, failure) <- expectPackageFailed plan res pkgidA1
    expectBuildFailed failure
  where
    testdir = "exception/build"
    pkgidA1 = PackageIdentifier "a" (mkVersion [1])

testSetupScriptStyles :: ProjectConfig -> (String -> IO ()) -> Assertion
testSetupScriptStyles config reportSubCase = do

  reportSubCase (show SetupCustomExplicitDeps)

  plan0@(_,_,sharedConfig) <- planProject testdir1 config

  let isOSX (Platform _ OSX) = True
      isOSX _ = False
  -- Skip the Custom tests when the shipped Cabal library is buggy
  unless (isOSX (pkgConfigPlatform sharedConfig)
       && compilerVersion (pkgConfigCompiler sharedConfig) < mkVersion [7,10]) $ do

    (plan1, res1) <- executePlan plan0
    (pkg1,  _)    <- expectPackageInstalled plan1 res1 pkgidA
    elabSetupScriptStyle pkg1 @?= SetupCustomExplicitDeps
    hasDefaultSetupDeps pkg1 @?= Just False
    marker1 <- readFile (basedir </> testdir1 </> "marker")
    marker1 @?= "ok"
    removeFile (basedir </> testdir1 </> "marker")

    -- implicit deps implies 'Cabal < 2' which conflicts w/ GHC 8.2 or later
    when (compilerVersion (pkgConfigCompiler sharedConfig) < mkVersion [8,2]) $ do
      reportSubCase (show SetupCustomImplicitDeps)
      (plan2, res2) <- executePlan =<< planProject testdir2 config
      (pkg2,  _)    <- expectPackageInstalled plan2 res2 pkgidA
      elabSetupScriptStyle pkg2 @?= SetupCustomImplicitDeps
      hasDefaultSetupDeps pkg2 @?= Just True
      marker2 <- readFile (basedir </> testdir2 </> "marker")
      marker2 @?= "ok"
      removeFile (basedir </> testdir2 </> "marker")

    reportSubCase (show SetupNonCustomInternalLib)
    (plan3, res3) <- executePlan =<< planProject testdir3 config
    (pkg3,  _)    <- expectPackageInstalled plan3 res3 pkgidA
    elabSetupScriptStyle pkg3 @?= SetupNonCustomInternalLib
{-
    --TODO: the SetupNonCustomExternalLib case is hard to test since it
    -- requires a version of Cabal that's later than the one we're testing
    -- e.g. needs a .cabal file that specifies cabal-version: >= 2.0
    -- and a corresponding Cabal package that we can use to try and build a
    -- default Setup.hs.
    reportSubCase (show SetupNonCustomExternalLib)
    (plan4, res4) <- executePlan =<< planProject testdir4 config
    (pkg4,  _)    <- expectPackageInstalled plan4 res4 pkgidA
    pkgSetupScriptStyle pkg4 @?= SetupNonCustomExternalLib
-}
  where
    testdir1 = "build/setup-custom1"
    testdir2 = "build/setup-custom2"
    testdir3 = "build/setup-simple"
    pkgidA   = PackageIdentifier "a" (mkVersion [0,1])
    -- The solver fills in default setup deps explicitly, but marks them as such
    hasDefaultSetupDeps = fmap defaultSetupDepends
                        . setupBuildInfo . elabPkgDescription

-- | Test the behaviour with and without @--keep-going@
--
testBuildKeepGoing :: ProjectConfig -> Assertion
testBuildKeepGoing config = do
    -- P is expected to fail, Q does not depend on P but without
    -- parallel build and without keep-going then we don't build Q yet.
    (plan1, res1) <- executePlan =<< planProject testdir (config  <> keepGoing False)
    (_, failure1) <- expectPackageFailed plan1 res1 "p-0.1"
    expectBuildFailed failure1
    _ <- expectPackageConfigured plan1 res1 "q-0.1"

    -- With keep-going then we should go on to sucessfully build Q
    (plan2, res2) <- executePlan
                 =<< planProject testdir (config <> keepGoing True)
    (_, failure2) <- expectPackageFailed plan2 res2 "p-0.1"
    expectBuildFailed failure2
    _ <- expectPackageInstalled plan2 res2 "q-0.1"
    return ()
  where
    testdir = "build/keep-going"
    keepGoing kg =
      mempty {
        projectConfigBuildOnly = mempty {
          projectConfigKeepGoing = toFlag kg
        }
      }

-- | See <https://github.com/haskell/cabal/issues/3324>
--
testRegressionIssue3324 :: ProjectConfig -> Assertion
testRegressionIssue3324 config = do
    -- expected failure first time due to missing dep
    (plan1, res1) <- executePlan =<< planProject testdir config
    (_pkgq, failure) <- expectPackageFailed plan1 res1 "q-0.1"
    expectBuildFailed failure

    -- add the missing dep, now it should work
    let qcabal  = basedir </> testdir </> "q" </> "q.cabal"
    withFileFinallyRestore qcabal $ do
      appendFile qcabal ("  build-depends: p\n")
      (plan2, res2) <- executePlan =<< planProject testdir config
      _ <- expectPackageInstalled plan2 res2 "p-0.1"
      _ <- expectPackageInstalled plan2 res2 "q-0.1"
      return ()
  where
    testdir = "regression/3324"


---------------------------------
-- Test utils to plan and build
--

basedir :: FilePath
basedir = "tests" </> "IntegrationTests2"

dirActions :: FilePath -> TS.DirActions IO
dirActions testdir =
    defaultDirActions {
      TS.doesFileExist       = \p ->
        TS.doesFileExist defaultDirActions (virtcwd </> p),

      TS.doesDirectoryExist  = \p ->
        TS.doesDirectoryExist defaultDirActions (virtcwd </> p),

      TS.canonicalizePath    = \p ->
        TS.canonicalizePath defaultDirActions (virtcwd </> p),

      TS.getCurrentDirectory =
        TS.canonicalizePath defaultDirActions virtcwd
    }
  where
    virtcwd = basedir </> testdir

type ProjDetails = (DistDirLayout,
                    CabalDirLayout,
                    ProjectConfig,
                    [PackageSpecifier UnresolvedSourcePackage],
                    BuildTimeSettings)

configureProject :: FilePath -> ProjectConfig -> IO ProjDetails
configureProject testdir cliConfig = do
    cabalDir <- defaultCabalDir
    let cabalDirLayout = defaultCabalDirLayout cabalDir

    projectRootDir <- canonicalizePath (basedir </> testdir)
    isexplict      <- doesFileExist (projectRootDir </> "cabal.project")
    let projectRoot
          | isexplict = ProjectRootExplicit projectRootDir
                                           (projectRootDir </> "cabal.project")
          | otherwise = ProjectRootImplicit projectRootDir
        distDirLayout = defaultDistDirLayout projectRoot Nothing

    -- Clear state between test runs. The state remains if the previous run
    -- ended in an exception (as we leave the files to help with debugging).
    cleanProject testdir

    (projectConfig, localPackages) <-
      rebuildProjectConfig verbosity
                           distDirLayout
                           cliConfig

    let buildSettings = resolveBuildTimeSettings
                          verbosity cabalDirLayout
                          projectConfig

    return (distDirLayout,
            cabalDirLayout,
            projectConfig,
            localPackages,
            buildSettings)

type PlanDetails = (ProjDetails,
                    ElaboratedInstallPlan,
                    ElaboratedSharedConfig)

planProject :: FilePath -> ProjectConfig -> IO PlanDetails
planProject testdir cliConfig = do

    projDetails@
      (distDirLayout,
       cabalDirLayout,
       projectConfig,
       localPackages,
       _buildSettings) <- configureProject testdir cliConfig

    (elaboratedPlan, _, elaboratedShared) <-
      rebuildInstallPlan verbosity
                         distDirLayout cabalDirLayout
                         projectConfig
                         localPackages

    return (projDetails,
            elaboratedPlan,
            elaboratedShared)

executePlan :: PlanDetails -> IO (ElaboratedInstallPlan, BuildOutcomes)
executePlan ((distDirLayout, cabalDirLayout, _, _, buildSettings),
             elaboratedPlan,
             elaboratedShared) = do

    let targets :: Map.Map UnitId [ComponentTarget]
        targets =
          Map.fromList
            [ (unitid, [ComponentTarget cname WholeComponent])
            | ts <- Map.elems (availableTargets elaboratedPlan)
            , AvailableTarget {
                availableTargetStatus = TargetBuildable (unitid, cname) _
              } <- ts
            ]
        elaboratedPlan' = pruneInstallPlanToTargets
                            TargetActionBuild targets
                            elaboratedPlan

    pkgsBuildStatus <-
      rebuildTargetsDryRun distDirLayout elaboratedShared
                           elaboratedPlan'

    let elaboratedPlan'' = improveInstallPlanWithUpToDatePackages
                             pkgsBuildStatus elaboratedPlan'

    buildOutcomes <-
      rebuildTargets verbosity
                     distDirLayout
                     (cabalStoreDirLayout cabalDirLayout)
                     elaboratedPlan''
                     elaboratedShared
                     pkgsBuildStatus
                     -- Avoid trying to use act-as-setup mode:
                     buildSettings { buildSettingNumJobs = 1 }

    return (elaboratedPlan'', buildOutcomes)

cleanProject :: FilePath -> IO ()
cleanProject testdir = do
    alreadyExists <- doesDirectoryExist distDir
    when alreadyExists $ removeDirectoryRecursive distDir
  where
    projectRoot    = ProjectRootImplicit (basedir </> testdir)
    distDirLayout  = defaultDistDirLayout projectRoot Nothing
    distDir        = distDirectory distDirLayout


verbosity :: Verbosity
verbosity = minBound --normal --verbose --maxBound --minBound



-------------------------------------------
-- Tasty integration to adjust the config
--

withProjectConfig :: (ProjectConfig -> TestTree) -> TestTree
withProjectConfig testtree =
    askOption $ \ghcPath ->
      testtree (mkProjectConfig ghcPath)

mkProjectConfig :: GhcPath -> ProjectConfig
mkProjectConfig (GhcPath ghcPath) =
    mempty {
      projectConfigShared = mempty {
        projectConfigHcPath = maybeToFlag ghcPath
      },
     projectConfigBuildOnly = mempty {
       projectConfigNumJobs = toFlag (Just 1)
     }
    }
  where
    maybeToFlag = maybe mempty toFlag


data GhcPath = GhcPath (Maybe FilePath)
  deriving Typeable

instance IsOption GhcPath where
  defaultValue = GhcPath Nothing
  optionName   = Tagged "with-ghc"
  optionHelp   = Tagged "The ghc compiler to use"
  parseValue   = Just . GhcPath . Just

projectConfigOptionDescriptions :: [OptionDescription]
projectConfigOptionDescriptions = [Option (Proxy :: Proxy GhcPath)]


---------------------------------------
-- HUint style utils for this context
--

expectException :: Exception e => String -> IO a -> IO e
expectException expected action = do
    res <- try action
    case res of
      Left  e -> return e
      Right _ -> throwIO $ HUnitFailure Nothing $ "expected an exception " ++ expected

expectPackagePreExisting :: ElaboratedInstallPlan -> BuildOutcomes -> PackageId
                         -> IO InstalledPackageInfo
expectPackagePreExisting plan buildOutcomes pkgid = do
    planpkg <- expectPlanPackage plan pkgid
    case (planpkg, InstallPlan.lookupBuildOutcome planpkg buildOutcomes) of
      (InstallPlan.PreExisting pkg, Nothing)
                       -> return pkg
      (_, buildResult) -> unexpectedBuildResult "PreExisting" planpkg buildResult

expectPackageConfigured :: ElaboratedInstallPlan -> BuildOutcomes -> PackageId
                        -> IO ElaboratedConfiguredPackage
expectPackageConfigured plan buildOutcomes pkgid = do
    planpkg <- expectPlanPackage plan pkgid
    case (planpkg, InstallPlan.lookupBuildOutcome planpkg buildOutcomes) of
      (InstallPlan.Configured pkg, Nothing)
                       -> return pkg
      (_, buildResult) -> unexpectedBuildResult "Configured" planpkg buildResult

expectPackageInstalled :: ElaboratedInstallPlan -> BuildOutcomes -> PackageId
                       -> IO (ElaboratedConfiguredPackage, BuildResult)
expectPackageInstalled plan buildOutcomes pkgid = do
    planpkg <- expectPlanPackage plan pkgid
    case (planpkg, InstallPlan.lookupBuildOutcome planpkg buildOutcomes) of
      (InstallPlan.Configured pkg, Just (Right result))
                       -> return (pkg, result)
      (_, buildResult) -> unexpectedBuildResult "Installed" planpkg buildResult

expectPackageFailed :: ElaboratedInstallPlan -> BuildOutcomes -> PackageId
                    -> IO (ElaboratedConfiguredPackage, BuildFailure)
expectPackageFailed plan buildOutcomes pkgid = do
    planpkg <- expectPlanPackage plan pkgid
    case (planpkg, InstallPlan.lookupBuildOutcome planpkg buildOutcomes) of
      (InstallPlan.Configured pkg, Just (Left failure))
                       -> return (pkg, failure)
      (_, buildResult) -> unexpectedBuildResult "Failed" planpkg buildResult

unexpectedBuildResult :: String -> ElaboratedPlanPackage
                      -> Maybe (Either BuildFailure BuildResult) -> IO a
unexpectedBuildResult expected planpkg buildResult =
    throwIO $ HUnitFailure Nothing $
         "expected to find " ++ display (packageId planpkg) ++ " in the "
      ++ expected ++ " state, but it is actually in the " ++ actual ++ " state."
  where
    actual = case (buildResult, planpkg) of
      (Nothing, InstallPlan.PreExisting{})       -> "PreExisting"
      (Nothing, InstallPlan.Configured{})        -> "Configured"
      (Just (Right _), InstallPlan.Configured{}) -> "Installed"
      (Just (Left  _), InstallPlan.Configured{}) -> "Failed"
      _                                          -> "Impossible!"

expectPlanPackage :: ElaboratedInstallPlan -> PackageId
                  -> IO ElaboratedPlanPackage
expectPlanPackage plan pkgid =
    case [ pkg
         | pkg <- InstallPlan.toList plan
         , packageId pkg == pkgid ] of
      [pkg] -> return pkg
      []    -> throwIO $ HUnitFailure Nothing $
                   "expected to find " ++ display pkgid
                ++ " in the install plan but it's not there"
      _     -> throwIO $ HUnitFailure Nothing $
                   "expected to find only one instance of " ++ display pkgid
                ++ " in the install plan but there's several"

expectBuildFailed :: BuildFailure -> IO ()
expectBuildFailed (BuildFailure _ (BuildFailed _)) = return ()
expectBuildFailed (BuildFailure _ reason) =
    assertFailure $ "expected BuildFailed, got " ++ show reason

---------------------------------------
-- Other utils
--

-- | Allow altering a file during a test, but then restore it afterwards
--
withFileFinallyRestore :: FilePath -> IO a -> IO a
withFileFinallyRestore file action = do
    copyFile file backup
    action `finally` renameFile backup file
  where
    backup = file <.> "backup"
