{- git-annex test suite
 -
 - Copyright 2010-2013 Joey Hess <joey@kitenet.net>
 -
 - Licensed under the GNU GPL version 3 or higher.
 -}

{-# LANGUAGE CPP #-}

module Test where

import Test.Tasty
import Test.Tasty.Runners
import Test.Tasty.HUnit
import Test.Tasty.QuickCheck
import Test.Tasty.Ingredients.Rerun
import Data.Monoid

import Options.Applicative hiding (command)
#if MIN_VERSION_optparse_applicative(0,8,0)
import qualified Options.Applicative.Types as Opt
#endif
import Control.Exception.Extensible
import qualified Data.Map as M
import qualified Text.JSON

import Common

import qualified Utility.SafeCommand
import qualified Annex
import qualified Annex.UUID
import qualified Backend
import qualified Git.CurrentRepo
import qualified Git.Filename
import qualified Git.Construct
import qualified Git.Types
import qualified Git.Ref
import qualified Git.LsTree
import qualified Git.FilePath
import qualified Locations
import qualified Types.KeySource
import qualified Types.Backend
import qualified Types.TrustLevel
import qualified Types
import qualified Logs
import qualified Logs.MapLog
import qualified Logs.Trust
import qualified Logs.Remote
import qualified Logs.Unused
import qualified Logs.Transfer
import qualified Logs.Presence
import qualified Types.MetaData
import qualified Remote
import qualified Types.Key
import qualified Types.Messages
import qualified Config
import qualified Config.Cost
import qualified Crypto
import qualified Annex.Init
import qualified Annex.CatFile
import qualified Annex.View
import qualified Annex.View.ViewedFile
import qualified Logs.View
import qualified Utility.Path
import qualified Utility.FileMode
import qualified Build.SysConfig
import qualified Utility.Format
import qualified Utility.Verifiable
import qualified Utility.Process
import qualified Utility.Misc
import qualified Utility.InodeCache
import qualified Utility.Env
import qualified Utility.Matcher
import qualified Utility.Exception
import qualified Utility.Hash
import qualified Utility.Scheduled
import qualified Utility.HumanTime
import qualified Utility.ThreadScheduler
import qualified Command.Uninit
#ifndef mingw32_HOST_OS
import qualified CmdLine.GitAnnex as GitAnnex
import qualified Remote.Helper.Encryptable
import qualified Types.Crypto
import qualified Utility.Gpg
#endif

type TestEnv = M.Map String String

main :: [String] -> IO ()
main ps = do
	let tests = testGroup "Tests"
		-- Test both direct and indirect mode.
		-- Windows is only going to use direct mode,
		-- so don't test twice.
		[ properties
#ifndef mingw32_HOST_OS
		, withTestEnv True $ unitTests "(direct)"
		, withTestEnv False $ unitTests "(indirect)"
#else
		, withTestEnv False $ unitTests ""
#endif
		]

	-- Can't use tasty's defaultMain because one of the command line
	-- parameters is "test".
	let pinfo = info (helper <*> suiteOptionParser ingredients tests)
		( fullDesc <> header "Builtin test suite" )
	opts <- parseOpts (prefs idm) pinfo ps
	case tryIngredients ingredients opts tests of
		Nothing -> error "No tests found!?"
		Just act -> ifM act
			( exitSuccess
			, do
				putStrLn "  (This could be due to a bug in git-annex, or an incompatability"
				putStrLn "   with utilities, such as git, installed on this system.)"
				exitFailure
			)
  where
  	progdesc = "git-annex test"
	parseOpts pprefs pinfo args =
#if MIN_VERSION_optparse_applicative(0,8,0)
		pure $ case execParserPure pprefs pinfo args of
			Opt.Success v -> v
			Opt.Failure f -> error $ fst $ Opt.execFailure f progdesc
			Opt.CompletionInvoked _ -> error "completion not supported"
#else
		either (error <=< flip errMessage progdesc) return $
			execParserPure pprefs pinfo args
#endif

ingredients :: [Ingredient]
ingredients =
	[ rerunningTests [consoleTestReporter]
	, listingTests
	]

properties :: TestTree
properties = localOption (QuickCheckTests 1000) $ testGroup "QuickCheck"
	[ testProperty "prop_idempotent_deencode_git" Git.Filename.prop_idempotent_deencode
	, testProperty "prop_idempotent_deencode" Utility.Format.prop_idempotent_deencode
	, testProperty "prop_idempotent_fileKey" Locations.prop_idempotent_fileKey
	, testProperty "prop_idempotent_key_encode" Types.Key.prop_idempotent_key_encode
	, testProperty "prop_idempotent_key_decode" Types.Key.prop_idempotent_key_decode
	, testProperty "prop_idempotent_shellEscape" Utility.SafeCommand.prop_idempotent_shellEscape
	, testProperty "prop_idempotent_shellEscape_multiword" Utility.SafeCommand.prop_idempotent_shellEscape_multiword
	, testProperty "prop_logs_sane" Logs.prop_logs_sane
	, testProperty "prop_idempotent_configEscape" Logs.Remote.prop_idempotent_configEscape
	, testProperty "prop_parse_show_Config" Logs.Remote.prop_parse_show_Config
	, testProperty "prop_parentDir_basics" Utility.Path.prop_parentDir_basics
	, testProperty "prop_relPathDirToFile_basics" Utility.Path.prop_relPathDirToFile_basics
	, testProperty "prop_relPathDirToFile_regressionTest" Utility.Path.prop_relPathDirToFile_regressionTest
	, testProperty "prop_cost_sane" Config.Cost.prop_cost_sane
	, testProperty "prop_matcher_sane" Utility.Matcher.prop_matcher_sane
	, testProperty "prop_HmacSha1WithCipher_sane" Crypto.prop_HmacSha1WithCipher_sane
	, testProperty "prop_TimeStamp_sane" Logs.MapLog.prop_TimeStamp_sane
	, testProperty "prop_addMapLog_sane" Logs.MapLog.prop_addMapLog_sane
	, testProperty "prop_verifiable_sane" Utility.Verifiable.prop_verifiable_sane
	, testProperty "prop_segment_regressionTest" Utility.Misc.prop_segment_regressionTest
	, testProperty "prop_read_write_transferinfo" Logs.Transfer.prop_read_write_transferinfo
	, testProperty "prop_read_show_inodecache" Utility.InodeCache.prop_read_show_inodecache
	, testProperty "prop_parse_show_log" Logs.Presence.prop_parse_show_log
	, testProperty "prop_read_show_TrustLevel" Types.TrustLevel.prop_read_show_TrustLevel
	, testProperty "prop_parse_show_TrustLog" Logs.Trust.prop_parse_show_TrustLog
	, testProperty "prop_hashes_stable" Utility.Hash.prop_hashes_stable
	, testProperty "prop_schedule_roundtrips" Utility.Scheduled.prop_schedule_roundtrips
	, testProperty "prop_past_sane" Utility.Scheduled.prop_past_sane
	, testProperty "prop_duration_roundtrips" Utility.HumanTime.prop_duration_roundtrips
	, testProperty "prop_metadata_sane" Types.MetaData.prop_metadata_sane
	, testProperty "prop_metadata_serialize" Types.MetaData.prop_metadata_serialize
	, testProperty "prop_branchView_legal" Logs.View.prop_branchView_legal
	, testProperty "prop_view_roundtrips" Annex.View.prop_view_roundtrips
	, testProperty "prop_viewedFile_rountrips" Annex.View.ViewedFile.prop_viewedFile_roundtrips
	]

{- These tests set up the test environment, but also test some basic parts
 - of git-annex. They are always run before the unitTests. -}
initTests :: TestEnv -> TestTree
initTests testenv = testGroup "Init Tests"
	[ check "init" test_init
	, check "add" test_add
	]
  where
	check desc t = testCase desc (t testenv)

unitTests :: String -> IO TestEnv -> TestTree
unitTests note gettestenv = testGroup ("Unit Tests " ++ note)
	[ check "add sha1dup" test_add_sha1dup
	, check "add extras" test_add_extras
	, check "reinject" test_reinject
	, check "unannex (no copy)" test_unannex_nocopy
	, check "unannex (with copy)" test_unannex_withcopy
	, check "drop (no remote)" test_drop_noremote
	, check "drop (with remote)" test_drop_withremote
	, check "drop (untrusted remote)" test_drop_untrustedremote
	, check "get" test_get
	, check "move" test_move
	, check "copy" test_copy
	, check "lock" test_lock
	, check "edit (no pre-commit)" test_edit
	, check "edit (pre-commit)" test_edit_precommit
	, check "fix" test_fix
	, check "trust" test_trust
	, check "fsck (basics)" test_fsck_basic
	, check "fsck (bare)" test_fsck_bare
	, check "fsck (local untrusted)" test_fsck_localuntrusted
	, check "fsck (remote untrusted)" test_fsck_remoteuntrusted
	, check "migrate" test_migrate
	, check "migrate (via gitattributes)" test_migrate_via_gitattributes
	, check" unused" test_unused
	, check "describe" test_describe
	, check "find" test_find
	, check "merge" test_merge
	, check "info" test_info
	, check "version" test_version
	, check "sync" test_sync
	, check "union merge regression" test_union_merge_regression
	, check "conflict resolution" test_conflict_resolution
	, check "conflict resolution movein regression" test_conflict_resolution_movein_regression
	, check "conflict resolution (mixed directory and file)" test_mixed_conflict_resolution
	, check "conflict resolution symlink bit" test_conflict_resolution_symlink_bit
	, check "conflict resolution (uncommitted local file)" test_uncommitted_conflict_resolution
	, check "conflict resolution (removed file)" test_remove_conflict_resolution
	, check "conflict resolution (nonannexed file)" test_nonannexed_file_conflict_resolution
	, check "conflict resolution (nonannexed symlink)" test_nonannexed_symlink_conflict_resolution
	, check "map" test_map
	, check "uninit" test_uninit
	, check "uninit (in git-annex branch)" test_uninit_inbranch
	, check "upgrade" test_upgrade
	, check "whereis" test_whereis
	, check "hook remote" test_hook_remote
	, check "directory remote" test_directory_remote
	, check "rsync remote" test_rsync_remote
	, check "bup remote" test_bup_remote
	, check "crypto" test_crypto
	, check "preferred content" test_preferred_content
	, check "add subdirs" test_add_subdirs
	]
  where
	check desc t = testCase desc (gettestenv >>= t)

-- this test case create the main repo
test_init :: TestEnv -> Assertion
test_init testenv = innewrepo testenv $ do
	git_annex testenv "init" [reponame] @? "init failed"
	handleforcedirect testenv
  where
	reponame = "test repo"

-- this test case runs in the main repo, to set up a basic
-- annexed file that later tests will use
test_add :: TestEnv -> Assertion
test_add testenv = inmainrepo testenv $ do
	writeFile annexedfile $ content annexedfile
	git_annex testenv "add" [annexedfile] @? "add failed"
	annexed_present annexedfile
	writeFile sha1annexedfile $ content sha1annexedfile
	git_annex testenv "add" [sha1annexedfile, "--backend=SHA1"] @? "add with SHA1 failed"
	annexed_present sha1annexedfile
	checkbackend sha1annexedfile backendSHA1
	ifM (annexeval Config.isDirect)
		( do
			writeFile ingitfile $ content ingitfile
			not <$> boolSystem "git" [Param "add", File ingitfile] @? "git add failed to fail in direct mode"
			nukeFile ingitfile
			git_annex testenv "sync" [] @? "sync failed"
		, do
			writeFile ingitfile $ content ingitfile
			boolSystem "git" [Param "add", File ingitfile] @? "git add failed"
			boolSystem "git" [Params "commit -q -m commit"] @? "git commit failed"
			git_annex testenv "add" [ingitfile] @? "add ingitfile should be no-op"
			unannexed ingitfile
		)

test_add_sha1dup :: TestEnv -> Assertion
test_add_sha1dup testenv = intmpclonerepo testenv $ do
	writeFile sha1annexedfiledup $ content sha1annexedfiledup
	git_annex testenv "add" [sha1annexedfiledup, "--backend=SHA1"] @? "add of second file with same SHA1 failed"
	annexed_present sha1annexedfiledup
	annexed_present sha1annexedfile

test_add_extras :: TestEnv -> Assertion
test_add_extras testenv = intmpclonerepo testenv $ do
	writeFile wormannexedfile $ content wormannexedfile
	git_annex testenv "add" [wormannexedfile, "--backend=WORM"] @? "add with WORM failed"
	annexed_present wormannexedfile
	checkbackend wormannexedfile backendWORM

test_reinject :: TestEnv -> Assertion
test_reinject testenv = intmpclonerepoInDirect testenv $ do
	git_annex testenv "drop" ["--force", sha1annexedfile] @? "drop failed"
	writeFile tmp $ content sha1annexedfile
	r <- annexeval $ Types.Backend.getKey backendSHA1
		Types.KeySource.KeySource { Types.KeySource.keyFilename = tmp, Types.KeySource.contentLocation = tmp, Types.KeySource.inodeCache = Nothing }
	let key = Types.Key.key2file $ fromJust r
	git_annex testenv "reinject" [tmp, sha1annexedfile] @? "reinject failed"
	git_annex testenv "fromkey" [key, sha1annexedfiledup] @? "fromkey failed for dup"
	annexed_present sha1annexedfiledup
  where
	tmp = "tmpfile"

test_unannex_nocopy :: TestEnv -> Assertion
test_unannex_nocopy testenv = intmpclonerepo testenv $ do
	annexed_notpresent annexedfile
	git_annex testenv "unannex" [annexedfile] @? "unannex failed with no copy"
	annexed_notpresent annexedfile

test_unannex_withcopy :: TestEnv -> Assertion
test_unannex_withcopy testenv = intmpclonerepo testenv $ do
	git_annex testenv "get" [annexedfile] @? "get failed"
	annexed_present annexedfile
	git_annex testenv "unannex" [annexedfile, sha1annexedfile] @? "unannex failed"
	unannexed annexedfile
	git_annex testenv "unannex" [annexedfile] @? "unannex failed on non-annexed file"
	unannexed annexedfile
	unlessM (annexeval Config.isDirect) $ do
		git_annex testenv "unannex" [ingitfile] @? "unannex ingitfile should be no-op"
		unannexed ingitfile

test_drop_noremote :: TestEnv -> Assertion
test_drop_noremote testenv = intmpclonerepo testenv $ do
	git_annex testenv "get" [annexedfile] @? "get failed"
	boolSystem "git" [Params "remote rm origin"]
		@? "git remote rm origin failed"
	not <$> git_annex testenv "drop" [annexedfile] @? "drop wrongly succeeded with no known copy of file"
	annexed_present annexedfile
	git_annex testenv "drop" ["--force", annexedfile] @? "drop --force failed"
	annexed_notpresent annexedfile
	git_annex testenv "drop" [annexedfile] @? "drop of dropped file failed"
	unlessM (annexeval Config.isDirect) $ do
		git_annex testenv "drop" [ingitfile] @? "drop ingitfile should be no-op"
		unannexed ingitfile

test_drop_withremote :: TestEnv -> Assertion
test_drop_withremote testenv = intmpclonerepo testenv $ do
	git_annex testenv "get" [annexedfile] @? "get failed"
	annexed_present annexedfile
	git_annex testenv "numcopies" ["2"] @? "numcopies config failed"
	not <$> git_annex testenv "drop" [annexedfile] @? "drop succeeded although numcopies is not satisfied"
	git_annex testenv "numcopies" ["1"] @? "numcopies config failed"
	git_annex testenv "drop" [annexedfile] @? "drop failed though origin has copy"
	annexed_notpresent annexedfile
	inmainrepo testenv $ annexed_present annexedfile

test_drop_untrustedremote :: TestEnv -> Assertion
test_drop_untrustedremote testenv = intmpclonerepo testenv $ do
	git_annex testenv "untrust" ["origin"] @? "untrust of origin failed"
	git_annex testenv "get" [annexedfile] @? "get failed"
	annexed_present annexedfile
	not <$> git_annex testenv "drop" [annexedfile] @? "drop wrongly suceeded with only an untrusted copy of the file"
	annexed_present annexedfile
	inmainrepo testenv $ annexed_present annexedfile

test_get :: TestEnv -> Assertion
test_get testenv = intmpclonerepo testenv $ do
	inmainrepo testenv $ annexed_present annexedfile
	annexed_notpresent annexedfile
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	inmainrepo testenv $ annexed_present annexedfile
	annexed_present annexedfile
	git_annex testenv "get" [annexedfile] @? "get of file already here failed"
	inmainrepo testenv $ annexed_present annexedfile
	annexed_present annexedfile
	unlessM (annexeval Config.isDirect) $ do
		inmainrepo testenv $ unannexed ingitfile
		unannexed ingitfile
		git_annex testenv "get" [ingitfile] @? "get ingitfile should be no-op"
		inmainrepo testenv $ unannexed ingitfile
		unannexed ingitfile

test_move :: TestEnv -> Assertion
test_move testenv = intmpclonerepo testenv $ do
	annexed_notpresent annexedfile
	inmainrepo testenv $ annexed_present annexedfile
	git_annex testenv "move" ["--from", "origin", annexedfile] @? "move --from of file failed"
	annexed_present annexedfile
	inmainrepo testenv $ annexed_notpresent annexedfile
	git_annex testenv "move" ["--from", "origin", annexedfile] @? "move --from of file already here failed"
	annexed_present annexedfile
	inmainrepo testenv $ annexed_notpresent annexedfile
	git_annex testenv "move" ["--to", "origin", annexedfile] @? "move --to of file failed"
	inmainrepo testenv $ annexed_present annexedfile
	annexed_notpresent annexedfile
	git_annex testenv "move" ["--to", "origin", annexedfile] @? "move --to of file already there failed"
	inmainrepo testenv $ annexed_present annexedfile
	annexed_notpresent annexedfile
	unlessM (annexeval Config.isDirect) $ do
		unannexed ingitfile
		inmainrepo testenv $ unannexed ingitfile
		git_annex testenv "move" ["--to", "origin", ingitfile] @? "move of ingitfile should be no-op"
		unannexed ingitfile
		inmainrepo testenv $ unannexed ingitfile
		git_annex testenv "move" ["--from", "origin", ingitfile] @? "move of ingitfile should be no-op"
		unannexed ingitfile
		inmainrepo testenv $ unannexed ingitfile

test_copy :: TestEnv -> Assertion
test_copy testenv = intmpclonerepo testenv $ do
	annexed_notpresent annexedfile
	inmainrepo testenv $ annexed_present annexedfile
	git_annex testenv "copy" ["--from", "origin", annexedfile] @? "copy --from of file failed"
	annexed_present annexedfile
	inmainrepo testenv $ annexed_present annexedfile
	git_annex testenv "copy" ["--from", "origin", annexedfile] @? "copy --from of file already here failed"
	annexed_present annexedfile
	inmainrepo testenv $ annexed_present annexedfile
	git_annex testenv "copy" ["--to", "origin", annexedfile] @? "copy --to of file already there failed"
	annexed_present annexedfile
	inmainrepo testenv $ annexed_present annexedfile
	git_annex testenv "move" ["--to", "origin", annexedfile] @? "move --to of file already there failed"
	annexed_notpresent annexedfile
	inmainrepo testenv $ annexed_present annexedfile
	unlessM (annexeval Config.isDirect) $ do
		unannexed ingitfile
		inmainrepo testenv $ unannexed ingitfile
		git_annex testenv "copy" ["--to", "origin", ingitfile] @? "copy of ingitfile should be no-op"
		unannexed ingitfile
		inmainrepo testenv $ unannexed ingitfile
		git_annex testenv "copy" ["--from", "origin", ingitfile] @? "copy of ingitfile should be no-op"
		checkregularfile ingitfile
		checkcontent ingitfile

test_preferred_content :: TestEnv -> Assertion
test_preferred_content testenv = intmpclonerepo testenv $ do
	annexed_notpresent annexedfile
	-- get --auto only looks at numcopies when preferred content is not
	-- set, and with 1 copy existing, does not get the file.
	git_annex testenv "get" ["--auto", annexedfile] @? "get --auto of file failed with default preferred content"
	annexed_notpresent annexedfile

	git_annex testenv "wanted" [".", "standard"] @? "set expression to standard failed"
	git_annex testenv "group" [".", "client"] @? "set group to standard failed"
	git_annex testenv "get" ["--auto", annexedfile] @? "get --auto of file failed for client"
	annexed_present annexedfile
	git_annex testenv "ungroup" [".", "client"] @? "ungroup failed"

	git_annex testenv "wanted" [".", "standard"] @? "set expression to standard failed"
	git_annex testenv "group" [".", "manual"] @? "set group to manual failed"
	-- drop --auto with manual leaves the file where it is
	git_annex testenv "drop" ["--auto", annexedfile] @? "drop --auto of file failed with manual preferred content"
	annexed_present annexedfile
	git_annex testenv "drop" [annexedfile] @? "drop of file failed"
	annexed_notpresent annexedfile
	-- get --auto with manual does not get the file
	git_annex testenv "get" ["--auto", annexedfile] @? "get --auto of file failed with manual preferred content"
	annexed_notpresent annexedfile
	git_annex testenv "ungroup" [".", "client"] @? "ungroup failed"
	
	git_annex testenv "wanted" [".", "exclude=*"] @? "set expression to exclude=* failed"
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "drop" ["--auto", annexedfile] @? "drop --auto of file failed with exclude=*"
	annexed_notpresent annexedfile
	git_annex testenv "get" ["--auto", annexedfile] @? "get --auto of file failed with exclude=*"
	annexed_notpresent annexedfile

test_lock :: TestEnv -> Assertion
test_lock testenv = intmpclonerepoInDirect testenv $ do
	-- regression test: unlock of not present file should skip it
	annexed_notpresent annexedfile
	not <$> git_annex testenv "unlock" [annexedfile] @? "unlock failed to fail with not present file"
	annexed_notpresent annexedfile

	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "unlock" [annexedfile] @? "unlock failed"		
	unannexed annexedfile
	-- write different content, to verify that lock
	-- throws it away
	changecontent annexedfile
	writeFile annexedfile $ content annexedfile ++ "foo"
	not <$> git_annex testenv "lock" [annexedfile] @? "lock failed to fail without --force"
	git_annex testenv "lock" ["--force", annexedfile] @? "lock --force failed"
	annexed_present annexedfile
	git_annex testenv "unlock" [annexedfile] @? "unlock failed"		
	unannexed annexedfile
	changecontent annexedfile
	git_annex testenv "add" [annexedfile] @? "add of modified file failed"
	runchecks [checklink, checkunwritable] annexedfile
	c <- readFile annexedfile
	assertEqual "content of modified file" c (changedcontent annexedfile)
	r' <- git_annex testenv "drop" [annexedfile]
	not r' @? "drop wrongly succeeded with no known copy of modified file"

test_edit :: TestEnv -> Assertion
test_edit = test_edit' False

test_edit_precommit :: TestEnv -> Assertion
test_edit_precommit = test_edit' True

test_edit' :: Bool -> TestEnv -> Assertion
test_edit' precommit testenv = intmpclonerepoInDirect testenv $ do
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "edit" [annexedfile] @? "edit failed"
	unannexed annexedfile
	changecontent annexedfile
	boolSystem "git" [Param "add", File annexedfile]
		@? "git add of edited file failed"
	if precommit
		then git_annex testenv "pre-commit" []
			@? "pre-commit failed"
		else boolSystem "git" [Params "commit -q -m contentchanged"]
			@? "git commit of edited file failed"
	runchecks [checklink, checkunwritable] annexedfile
	c <- readFile annexedfile
	assertEqual "content of modified file" c (changedcontent annexedfile)
	not <$> git_annex testenv "drop" [annexedfile] @? "drop wrongly succeeded with no known copy of modified file"

test_fix :: TestEnv -> Assertion
test_fix testenv = intmpclonerepoInDirect testenv $ do
	annexed_notpresent annexedfile
	git_annex testenv "fix" [annexedfile] @? "fix of not present failed"
	annexed_notpresent annexedfile
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "fix" [annexedfile] @? "fix of present file failed"
	annexed_present annexedfile
	createDirectory subdir
	boolSystem "git" [Param "mv", File annexedfile, File subdir]
		@? "git mv failed"
	git_annex testenv "fix" [newfile] @? "fix of moved file failed"
	runchecks [checklink, checkunwritable] newfile
	c <- readFile newfile
	assertEqual "content of moved file" c (content annexedfile)
  where
	subdir = "s"
	newfile = subdir ++ "/" ++ annexedfile

test_trust :: TestEnv -> Assertion
test_trust testenv = intmpclonerepo testenv $ do
	git_annex testenv "trust" [repo] @? "trust failed"
	trustcheck Logs.Trust.Trusted "trusted 1"
	git_annex testenv "trust" [repo] @? "trust of trusted failed"
	trustcheck Logs.Trust.Trusted "trusted 2"
	git_annex testenv "untrust" [repo] @? "untrust failed"
	trustcheck Logs.Trust.UnTrusted "untrusted 1"
	git_annex testenv "untrust" [repo] @? "untrust of untrusted failed"
	trustcheck Logs.Trust.UnTrusted "untrusted 2"
	git_annex testenv "dead" [repo] @? "dead failed"
	trustcheck Logs.Trust.DeadTrusted "deadtrusted 1"
	git_annex testenv "dead" [repo] @? "dead of dead failed"
	trustcheck Logs.Trust.DeadTrusted "deadtrusted 2"
	git_annex testenv "semitrust" [repo] @? "semitrust failed"
	trustcheck Logs.Trust.SemiTrusted "semitrusted 1"
	git_annex testenv "semitrust" [repo] @? "semitrust of semitrusted failed"
	trustcheck Logs.Trust.SemiTrusted "semitrusted 2"
  where
	repo = "origin"
	trustcheck expected msg = do
		present <- annexeval $ do
			l <- Logs.Trust.trustGet expected
			u <- Remote.nameToUUID repo
			return $ u `elem` l
		assertBool msg present

test_fsck_basic :: TestEnv -> Assertion
test_fsck_basic testenv = intmpclonerepo testenv $ do
	git_annex testenv "fsck" [] @? "fsck failed"
	git_annex testenv "numcopies" ["2"] @? "numcopies config failed"
	fsck_should_fail testenv "numcopies unsatisfied"
	git_annex testenv "numcopies" ["1"] @? "numcopies config failed"
	corrupt annexedfile
	corrupt sha1annexedfile
  where
	corrupt f = do
		git_annex testenv "get" [f] @? "get of file failed"
		Utility.FileMode.allowWrite f
		writeFile f (changedcontent f)
		ifM (annexeval Config.isDirect)
			( git_annex testenv "fsck" [] @? "fsck failed in direct mode with changed file content"
			, not <$> git_annex testenv "fsck" [] @? "fsck failed to fail with corrupted file content"
			)
		git_annex testenv "fsck" [] @? "fsck unexpectedly failed again; previous one did not fix problem with " ++ f

test_fsck_bare :: TestEnv -> Assertion
test_fsck_bare testenv = intmpbareclonerepo testenv $
	git_annex testenv "fsck" [] @? "fsck failed"

test_fsck_localuntrusted :: TestEnv -> Assertion
test_fsck_localuntrusted testenv = intmpclonerepo testenv $ do
	git_annex testenv "get" [annexedfile] @? "get failed"
	git_annex testenv "untrust" ["origin"] @? "untrust of origin repo failed"
	git_annex testenv "untrust" ["."] @? "untrust of current repo failed"
	fsck_should_fail testenv "content only available in untrusted (current) repository"
	git_annex testenv "trust" ["."] @? "trust of current repo failed"
	git_annex testenv "fsck" [annexedfile] @? "fsck failed on file present in trusted repo"

test_fsck_remoteuntrusted :: TestEnv -> Assertion
test_fsck_remoteuntrusted testenv = intmpclonerepo testenv $ do
	git_annex testenv "numcopies" ["2"] @? "numcopies config failed"
	git_annex testenv "get" [annexedfile] @? "get failed"
	git_annex testenv "get" [sha1annexedfile] @? "get failed"
	git_annex testenv "fsck" [] @? "fsck failed with numcopies=2 and 2 copies"
	git_annex testenv "untrust" ["origin"] @? "untrust of origin failed"
	fsck_should_fail testenv "content not replicated to enough non-untrusted repositories"

fsck_should_fail :: TestEnv -> String -> Assertion
fsck_should_fail testenv m = not <$> git_annex testenv "fsck" []
	@? "fsck failed to fail with " ++ m

test_migrate :: TestEnv -> Assertion
test_migrate = test_migrate' False

test_migrate_via_gitattributes :: TestEnv -> Assertion
test_migrate_via_gitattributes = test_migrate' True

test_migrate' :: Bool -> TestEnv -> Assertion
test_migrate' usegitattributes testenv = intmpclonerepoInDirect testenv $ do
	annexed_notpresent annexedfile
	annexed_notpresent sha1annexedfile
	git_annex testenv "migrate" [annexedfile] @? "migrate of not present failed"
	git_annex testenv "migrate" [sha1annexedfile] @? "migrate of not present failed"
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	git_annex testenv "get" [sha1annexedfile] @? "get of file failed"
	annexed_present annexedfile
	annexed_present sha1annexedfile
	if usegitattributes
		then do
			writeFile ".gitattributes" "* annex.backend=SHA1"
			git_annex testenv "migrate" [sha1annexedfile]
				@? "migrate sha1annexedfile failed"
			git_annex testenv "migrate" [annexedfile]
				@? "migrate annexedfile failed"
		else do
			git_annex testenv "migrate" [sha1annexedfile, "--backend", "SHA1"]
				@? "migrate sha1annexedfile failed"
			git_annex testenv "migrate" [annexedfile, "--backend", "SHA1"]
				@? "migrate annexedfile failed"
	annexed_present annexedfile
	annexed_present sha1annexedfile
	checkbackend annexedfile backendSHA1
	checkbackend sha1annexedfile backendSHA1

	-- check that reversing a migration works
	writeFile ".gitattributes" "* annex.backend=SHA256"
	git_annex testenv "migrate" [sha1annexedfile]
		@? "migrate sha1annexedfile failed"
	git_annex testenv "migrate" [annexedfile]
		@? "migrate annexedfile failed"
	annexed_present annexedfile
	annexed_present sha1annexedfile
	checkbackend annexedfile backendSHA256
	checkbackend sha1annexedfile backendSHA256

test_unused :: TestEnv -> Assertion
-- This test is broken in direct mode
test_unused testenv = intmpclonerepoInDirect testenv $ do
	-- keys have to be looked up before files are removed
	annexedfilekey <- annexeval $ findkey annexedfile
	sha1annexedfilekey <- annexeval $ findkey sha1annexedfile
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	git_annex testenv "get" [sha1annexedfile] @? "get of file failed"
	checkunused [] "after get"
	boolSystem "git" [Params "rm -fq", File annexedfile] @? "git rm failed"
	checkunused [] "after rm"
	boolSystem "git" [Params "commit -q -m foo"] @? "git commit failed"
	checkunused [] "after commit"
	-- unused checks origin/master; once it's gone it is really unused
	boolSystem "git" [Params "remote rm origin"] @? "git remote rm origin failed"
	checkunused [annexedfilekey] "after origin branches are gone"
	boolSystem "git" [Params "rm -fq", File sha1annexedfile] @? "git rm failed"
	boolSystem "git" [Params "commit -q -m foo"] @? "git commit failed"
	checkunused [annexedfilekey, sha1annexedfilekey] "after rm sha1annexedfile"

	-- good opportunity to test dropkey also
	git_annex testenv "dropkey" ["--force", Types.Key.key2file annexedfilekey]
		@? "dropkey failed"
	checkunused [sha1annexedfilekey] ("after dropkey --force " ++ Types.Key.key2file annexedfilekey)

	not <$> git_annex testenv "dropunused" ["1"] @? "dropunused failed to fail without --force"
	git_annex testenv "dropunused" ["--force", "1"] @? "dropunused failed"
	checkunused [] "after dropunused"
	not <$> git_annex testenv "dropunused" ["--force", "10", "501"] @? "dropunused failed to fail on bogus numbers"

	-- unused used to miss symlinks that were not staged and pointed 
	-- at annexed content, and think that content was unused
	writeFile "unusedfile" "unusedcontent"
	git_annex testenv "add" ["unusedfile"] @? "add of unusedfile failed"
	unusedfilekey <- annexeval $ findkey "unusedfile"
	renameFile "unusedfile" "unusedunstagedfile"
	boolSystem "git" [Params "rm -qf", File "unusedfile"] @? "git rm failed"
	checkunused [] "with unstaged link"
	removeFile "unusedunstagedfile"
	checkunused [unusedfilekey] "with unstaged link deleted"

	-- unused used to miss symlinks that were deleted or modified
	-- manually, but commited as such.
	writeFile "unusedfile" "unusedcontent"
	git_annex testenv "add" ["unusedfile"] @? "add of unusedfile failed"
	boolSystem "git" [Param "add", File "unusedfile"] @? "git add failed"
	unusedfilekey' <- annexeval $ findkey "unusedfile"
	checkunused [] "with staged deleted link"
	boolSystem "git" [Params "rm -qf", File "unusedfile"] @? "git rm failed"
	checkunused [unusedfilekey'] "with staged link deleted"

	-- unused used to miss symlinks that were deleted or modified
	-- manually, but not staged as such.
	writeFile "unusedfile" "unusedcontent"
	git_annex testenv "add" ["unusedfile"] @? "add of unusedfile failed"
	boolSystem "git" [Param "add", File "unusedfile"] @? "git add failed"
	unusedfilekey'' <- annexeval $ findkey "unusedfile"
	checkunused [] "with unstaged deleted link"
	removeFile "unusedfile"
	checkunused [unusedfilekey''] "with unstaged link deleted"

  where
	checkunused expectedkeys desc = do
		git_annex testenv "unused" [] @? "unused failed"
		unusedmap <- annexeval $ Logs.Unused.readUnusedMap ""
		let unusedkeys = M.elems unusedmap
		assertEqual ("unused keys differ " ++ desc)
			(sort expectedkeys) (sort unusedkeys)
	findkey f = do
		r <- Backend.lookupFile f
		return $ fromJust r

test_describe :: TestEnv -> Assertion
test_describe testenv = intmpclonerepo testenv $ do
	git_annex testenv "describe" [".", "this repo"] @? "describe 1 failed"
	git_annex testenv "describe" ["origin", "origin repo"] @? "describe 2 failed"

test_find :: TestEnv -> Assertion
test_find testenv = intmpclonerepo testenv $ do
	annexed_notpresent annexedfile
	git_annex_expectoutput testenv "find" [] []
	git_annex testenv "get" [annexedfile] @? "get failed"
	annexed_present annexedfile
	annexed_notpresent sha1annexedfile
	git_annex_expectoutput testenv "find" [] [annexedfile]
	git_annex_expectoutput testenv "find" ["--exclude", annexedfile, "--and", "--exclude", sha1annexedfile] []
	git_annex_expectoutput testenv "find" ["--include", annexedfile] [annexedfile]
	git_annex_expectoutput testenv "find" ["--not", "--in", "origin"] []
	git_annex_expectoutput testenv "find" ["--copies", "1", "--and", "--not", "--copies", "2"] [sha1annexedfile]
	git_annex_expectoutput testenv "find" ["--inbackend", "SHA1"] [sha1annexedfile]
	git_annex_expectoutput testenv "find" ["--inbackend", "WORM"] []

	{- --include=* should match files in subdirectories too,
	 - and --exclude=* should exclude them. -}
	createDirectory "dir"
	writeFile "dir/subfile" "subfile"
	git_annex testenv "add" ["dir"] @? "add of subdir failed"
	git_annex_expectoutput testenv "find" ["--include", "*", "--exclude", annexedfile, "--exclude", sha1annexedfile] ["dir/subfile"]
	git_annex_expectoutput testenv "find" ["--exclude", "*"] []

test_merge :: TestEnv -> Assertion
test_merge testenv = intmpclonerepo testenv $
	git_annex testenv "merge" [] @? "merge failed"

test_info :: TestEnv -> Assertion
test_info testenv = intmpclonerepo testenv $ do
	json <- git_annex_output testenv "info" ["--json"]
	case Text.JSON.decodeStrict json :: Text.JSON.Result (Text.JSON.JSObject Text.JSON.JSValue) of
		Text.JSON.Ok _ -> return ()
		Text.JSON.Error e -> assertFailure e

test_version :: TestEnv -> Assertion
test_version testenv = intmpclonerepo testenv $
	git_annex testenv "version" [] @? "version failed"

test_sync :: TestEnv -> Assertion
test_sync testenv = intmpclonerepo testenv $ do
	git_annex testenv "sync" [] @? "sync failed"
	{- Regression test for bug fixed in 
	 - 7b0970b340d7faeb745c666146c7f701ec71808f, where in direct mode
	 - sync committed the symlink standin file to the annex. -}
	git_annex_expectoutput testenv "find" ["--in", "."] []

{- Regression test for union merge bug fixed in
 - 0214e0fb175a608a49b812d81b4632c081f63027 -}
test_union_merge_regression :: TestEnv -> Assertion
test_union_merge_regression testenv =
	{- We need 3 repos to see this bug. -}
	withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 ->
			withtmpclonerepo testenv False $ \r3 -> do
				forM_ [r1, r2, r3] $ \r -> indir testenv r $ do
					when (r /= r1) $
						boolSystem "git" [Params "remote add r1", File ("../../" ++ r1)] @? "remote add"
					when (r /= r2) $
						boolSystem "git" [Params "remote add r2", File ("../../" ++ r2)] @? "remote add"
					when (r /= r3) $
						boolSystem "git" [Params "remote add r3", File ("../../" ++ r3)] @? "remote add"
					git_annex testenv "get" [annexedfile] @? "get failed"
					boolSystem "git" [Params "remote rm origin"] @? "remote rm"
				forM_ [r3, r2, r1] $ \r -> indir testenv r $
					git_annex testenv "sync" [] @? "sync failed"
				forM_ [r3, r2] $ \r -> indir testenv r $
					git_annex testenv "drop" ["--force", annexedfile] @? "drop failed"
				indir testenv r1 $ do
					git_annex testenv "sync" [] @? "sync failed in r1"
					git_annex_expectoutput testenv "find" ["--in", "r3"] []
					{- This was the bug. The sync
					 - mangled location log data and it
					 - thought the file was still in r2 -}
					git_annex_expectoutput testenv "find" ["--in", "r2"] []

{- Regression test for the automatic conflict resolution bug fixed
 - in f4ba19f2b8a76a1676da7bb5850baa40d9c388e2. -}
test_conflict_resolution_movein_regression :: TestEnv -> Assertion
test_conflict_resolution_movein_regression testenv = withtmpclonerepo testenv False $ \r1 -> 
	withtmpclonerepo testenv False $ \r2 -> do
		let rname r = if r == r1 then "r1" else "r2"
		forM_ [r1, r2] $ \r -> indir testenv r $ do
			{- Get all files, see check below. -}
			git_annex testenv "get" [] @? "get failed"
			disconnectOrigin
		pair testenv r1 r2
		forM_ [r1, r2] $ \r -> indir testenv r $ do
			{- Set up a conflict. -}
			let newcontent = content annexedfile ++ rname r
			ifM (annexeval Config.isDirect)
				( writeFile annexedfile newcontent
				, do
					git_annex testenv "unlock" [annexedfile] @? "unlock failed"		
					writeFile annexedfile newcontent
				)
		{- Sync twice in r1 so it gets the conflict resolution
		 - update from r2 -}
		forM_ [r1, r2, r1] $ \r -> indir testenv r $
			git_annex testenv "sync" ["--force"] @? "sync failed in " ++ rname r
		{- After the sync, it should be possible to get all
		 - files. This includes both sides of the conflict,
		 - although the filenames are not easily predictable.
		 -
		 - The bug caused, in direct mode, one repo to
		 - be missing the content of the file that had
		 - been put in it. -}
		forM_ [r1, r2] $ \r -> indir testenv r $ do
		 	git_annex testenv "get" [] @? "unable to get all files after merge conflict resolution in " ++ rname r

{- Simple case of conflict resolution; 2 different versions of annexed
 - file. -}
test_conflict_resolution :: TestEnv -> Assertion
test_conflict_resolution testenv = 
	withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			indir testenv r1 $ do
				disconnectOrigin
				writeFile conflictor "conflictor1"
				git_annex testenv "add" [conflictor] @? "add conflicter failed"
				git_annex testenv "sync" [] @? "sync failed in r1"
			indir testenv r2 $ do
				disconnectOrigin
				writeFile conflictor "conflictor2"
				git_annex testenv "add" [conflictor] @? "add conflicter failed"
				git_annex testenv "sync" [] @? "sync failed in r2"
			pair testenv r1 r2
			forM_ [r1,r2,r1] $ \r -> indir testenv r $
				git_annex testenv "sync" [] @? "sync failed"
			checkmerge "r1" r1
			checkmerge "r2" r2
  where
	conflictor = "conflictor"
	variantprefix = conflictor ++ ".variant"
	checkmerge what d = do
		l <- getDirectoryContents d
		let v = filter (variantprefix `isPrefixOf`) l
		length v == 2
			@? (what ++ " not exactly 2 variant files in: " ++ show l)
		conflictor `notElem` l @? ("conflictor still present after conflict resolution")
		indir testenv d $ do
			git_annex testenv "get" v @? "get failed"
			git_annex_expectoutput testenv "find" v v


{- Check merge conflict resolution when one side is an annexed
 - file, and the other is a directory. -}
test_mixed_conflict_resolution :: TestEnv -> Assertion
test_mixed_conflict_resolution testenv = do
	check True
	check False
  where
	check inr1 = withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			indir testenv r1 $ do
				disconnectOrigin
				writeFile conflictor "conflictor"
				git_annex testenv "add" [conflictor] @? "add conflicter failed"
				git_annex testenv "sync" [] @? "sync failed in r1"
			indir testenv r2 $ do
				disconnectOrigin
				createDirectory conflictor
				writeFile subfile "subfile"
				git_annex testenv "add" [conflictor] @? "add conflicter failed"
				git_annex testenv "sync" [] @? "sync failed in r2"
			pair testenv r1 r2
			let l = if inr1 then [r1, r2] else [r2, r1]
			forM_ l $ \r -> indir testenv r $
				git_annex testenv "sync" [] @? "sync failed in mixed conflict"
			checkmerge "r1" r1
			checkmerge "r2" r2
	conflictor = "conflictor"
	subfile = conflictor </> "subfile"
	variantprefix = conflictor ++ ".variant"
	checkmerge what d = do
		doesDirectoryExist (d </> conflictor) @? (d ++ " conflictor directory missing")
		l <- getDirectoryContents d
		let v = filter (variantprefix `isPrefixOf`) l
		not (null v)
			@? (what ++ " conflictor variant file missing in: " ++ show l )
		length v == 1
			@? (what ++ " too many variant files in: " ++ show v)
		indir testenv d $ do
			git_annex testenv "get" (conflictor:v) @? ("get failed in " ++ what)
			git_annex_expectoutput testenv "find" [conflictor] [Git.FilePath.toInternalGitPath subfile]
			git_annex_expectoutput testenv "find" v v

{- Check merge conflict resolution when both repos start with an annexed
 - file; one modifies it, and the other deletes it. -}
test_remove_conflict_resolution :: TestEnv -> Assertion
test_remove_conflict_resolution testenv = do
	check True
	check False
  where
	check inr1 = withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			indir testenv r1 $ do
				disconnectOrigin
				writeFile conflictor "conflictor"
				git_annex testenv "add" [conflictor] @? "add conflicter failed"
				git_annex testenv "sync" [] @? "sync failed in r1"
			indir testenv r2 $
				disconnectOrigin
			pair testenv r1 r2
			indir testenv r2 $ do
				git_annex testenv "sync" [] @? "sync failed in r2"
				git_annex testenv "get" [conflictor]
					@? "get conflictor failed"
				unlessM (annexeval Config.isDirect) $ do
					git_annex testenv "unlock" [conflictor]
						@? "unlock conflictor failed"
				writeFile conflictor "newconflictor"
			indir testenv r1 $
				nukeFile conflictor
			let l = if inr1 then [r1, r2, r1] else [r2, r1, r2]
			forM_ l $ \r -> indir testenv r $
				git_annex testenv "sync" [] @? "sync failed"
			checkmerge "r1" r1
			checkmerge "r2" r2
	conflictor = "conflictor"
	variantprefix = conflictor ++ ".variant"
	checkmerge what d = do
		l <- getDirectoryContents d
		let v = filter (variantprefix `isPrefixOf`) l
		not (null v)
			@? (what ++ " conflictor variant file missing in: " ++ show l )
		length v == 1
			@? (what ++ " too many variant files in: " ++ show v)

 {- Check merge confalict resolution when a file is annexed in one repo,
  - and checked directly into git in the other repo.
  -
  - This test requires indirect mode to set it up, but tests both direct and
  - indirect mode.
  -}
test_nonannexed_file_conflict_resolution :: TestEnv -> Assertion
test_nonannexed_file_conflict_resolution testenv = do
	check True False
	check False False
	check True True
	check False True
  where
	check inr1 switchdirect = withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			whenM (isInDirect r1 <&&> isInDirect r2) $ do
				indir testenv r1 $ do
					disconnectOrigin
					writeFile conflictor "conflictor"
					git_annex testenv "add" [conflictor] @? "add conflicter failed"
					git_annex testenv "sync" [] @? "sync failed in r1"
				indir testenv r2 $ do
					disconnectOrigin
					writeFile conflictor nonannexed_content
					boolSystem "git" [Params "add", File conflictor] @? "git add conflictor failed"
					git_annex testenv "sync" [] @? "sync failed in r2"
				pair testenv r1 r2
				let l = if inr1 then [r1, r2] else [r2, r1]
				forM_ l $ \r -> indir testenv r $ do
					when switchdirect $
						git_annex testenv "direct" [] @? "failed switching to direct mode"
					git_annex testenv "sync" [] @? "sync failed"
				checkmerge ("r1" ++ show switchdirect) r1
				checkmerge ("r2" ++ show switchdirect) r2
	conflictor = "conflictor"
	nonannexed_content = "nonannexed"
	variantprefix = conflictor ++ ".variant"
	checkmerge what d = do
		l <- getDirectoryContents d
		let v = filter (variantprefix `isPrefixOf`) l
		not (null v)
			@? (what ++ " conflictor variant file missing in: " ++ show l )
		length v == 1
			@? (what ++ " too many variant files in: " ++ show v)
		conflictor `elem` l @? (what ++ " conflictor file missing in: " ++ show l)
		s <- catchMaybeIO (readFile (d </> conflictor))
		s == Just nonannexed_content
			@? (what ++ " wrong content for nonannexed file: " ++ show s)


{- Check merge confalict resolution when a file is annexed in one repo,
 - and is a non-git-annex symlink in the other repo.
 -
 - Test can only run when coreSymlinks is supported, because git needs to
 - be able to check out the non-git-annex symlink.
 -}
test_nonannexed_symlink_conflict_resolution :: TestEnv -> Assertion
test_nonannexed_symlink_conflict_resolution testenv = do
	check True False
	check False False
	check True True
	check False True
  where
	check inr1 switchdirect = withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			whenM (checkRepo (Types.coreSymlinks <$> Annex.getGitConfig) r1
			       <&&> isInDirect r1 <&&> isInDirect r2) $ do
				indir testenv r1 $ do
					disconnectOrigin
					writeFile conflictor "conflictor"
					git_annex testenv "add" [conflictor] @? "add conflicter failed"
					git_annex testenv "sync" [] @? "sync failed in r1"
				indir testenv r2 $ do
					disconnectOrigin
					createSymbolicLink symlinktarget "conflictor"
					boolSystem "git" [Params "add", File conflictor] @? "git add conflictor failed"
					git_annex testenv "sync" [] @? "sync failed in r2"
				pair testenv r1 r2
				let l = if inr1 then [r1, r2] else [r2, r1]
				forM_ l $ \r -> indir testenv r $ do
					when switchdirect $
						git_annex testenv "direct" [] @? "failed switching to direct mode"
					git_annex testenv "sync" [] @? "sync failed"
				checkmerge ("r1" ++ show switchdirect) r1
				checkmerge ("r2" ++ show switchdirect) r2
	conflictor = "conflictor"
	symlinktarget = "dummy-target"
	variantprefix = conflictor ++ ".variant"
	checkmerge what d = do
		l <- getDirectoryContents d
		let v = filter (variantprefix `isPrefixOf`) l
		not (null v)
			@? (what ++ " conflictor variant file missing in: " ++ show l )
		length v == 1
			@? (what ++ " too many variant files in: " ++ show v)
		conflictor `elem` l @? (what ++ " conflictor file missing in: " ++ show l)
		s <- catchMaybeIO (readSymbolicLink (d </> conflictor))
		s == Just symlinktarget
			@? (what ++ " wrong target for nonannexed symlink: " ++ show s)

{- Check merge conflict resolution when there is a local file,
 - that is not staged or committed, that conflicts with what's being added
 - from the remmote.
 -
 - Case 1: Remote adds file named conflictor; local has a file named
 - conflictor.
 -
 - Case 2: Remote adds conflictor/file; local has a file named conflictor.
 -}
test_uncommitted_conflict_resolution :: TestEnv -> Assertion
test_uncommitted_conflict_resolution testenv = do
	check conflictor
	check (conflictor </> "file")
  where
	check remoteconflictor = withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			indir testenv r1 $ do
				disconnectOrigin
				createDirectoryIfMissing True (parentDir remoteconflictor)
				writeFile remoteconflictor annexedcontent
				git_annex testenv "add" [conflictor] @? "add remoteconflicter failed"
				git_annex testenv "sync" [] @? "sync failed in r1"
			indir testenv r2 $ do
				disconnectOrigin
				writeFile conflictor localcontent
			pair testenv r1 r2
			indir testenv r2 $ ifM (annexeval Config.isDirect)
				( do
					git_annex testenv "sync" [] @? "sync failed"
					let local = conflictor ++ localprefix
					doesFileExist local @? (local ++ " missing after merge")
					s <- readFile local
					s == localcontent @? (local ++ " has wrong content: " ++ s)
					git_annex testenv "get" [conflictor] @? "get failed"
					doesFileExist remoteconflictor @? (remoteconflictor ++ " missing after merge")
					s' <- readFile remoteconflictor
					s' == annexedcontent @? (remoteconflictor ++ " has wrong content: " ++ s)
				-- this case is intentionally not handled
				-- in indirect mode, since the user
				-- can recover on their own easily
				, not <$> git_annex testenv "sync" [] @? "sync failed to fail"
				)
	conflictor = "conflictor"
	localprefix = ".variant-local"
	localcontent = "local"
	annexedcontent = "annexed"

{- On Windows/FAT, repeated conflict resolution sometimes 
 - lost track of whether a file was a symlink. 
 -}
test_conflict_resolution_symlink_bit :: TestEnv -> Assertion
test_conflict_resolution_symlink_bit testenv = do
	withtmpclonerepo testenv False $ \r1 ->
		withtmpclonerepo testenv False $ \r2 -> do
			withtmpclonerepo testenv False $ \r3 -> do
				indir testenv r1 $ do
					writeFile conflictor "conflictor"
					git_annex testenv "add" [conflictor] @? "add conflicter failed"
					git_annex testenv "sync" [] @? "sync failed in r1"
					check_is_link conflictor "r1"
				indir testenv r2 $ do
					createDirectory conflictor
					writeFile (conflictor </> "subfile") "subfile"
					git_annex testenv "add" [conflictor] @? "add conflicter failed"
					git_annex testenv "sync" [] @? "sync failed in r2"
					check_is_link (conflictor </> "subfile") "r2"
				indir testenv r3 $ do
					writeFile conflictor "conflictor"
					git_annex testenv "add" [conflictor] @? "add conflicter failed"
					git_annex testenv "sync" [] @? "sync failed in r1"
					check_is_link (conflictor </> "subfile") "r3"
  where
	conflictor = "conflictor"
	check_is_link f what = do
		git_annex_expectoutput testenv "find" ["--include=*", f] [Git.FilePath.toInternalGitPath f]
		l <- annexeval $ Annex.inRepo $ Git.LsTree.lsTreeFiles Git.Ref.headRef [f]
		all (\i -> Git.Types.toBlobType (Git.LsTree.mode i) == Just Git.Types.SymlinkBlob) l
			@? (what ++ " " ++ f ++ " lost symlink bit after merge: " ++ show l)

{- Set up repos as remotes of each other. -}
pair :: TestEnv -> FilePath -> FilePath -> Assertion
pair testenv r1 r2 = forM_ [r1, r2] $ \r -> indir testenv r $ do
	when (r /= r1) $
		boolSystem "git" [Params "remote add r1", File ("../../" ++ r1)] @? "remote add"
	when (r /= r2) $
		boolSystem "git" [Params "remote add r2", File ("../../" ++ r2)] @? "remote add"

test_map :: TestEnv -> Assertion
test_map testenv = intmpclonerepo testenv $ do
	-- set descriptions, that will be looked for in the map
	git_annex testenv "describe" [".", "this repo"] @? "describe 1 failed"
	git_annex testenv "describe" ["origin", "origin repo"] @? "describe 2 failed"
	-- --fast avoids it running graphviz, not a build dependency
	git_annex testenv "map" ["--fast"] @? "map failed"

test_uninit :: TestEnv -> Assertion
test_uninit testenv = intmpclonerepo testenv $ do
	git_annex testenv "get" [] @? "get failed"
	annexed_present annexedfile
	_ <- git_annex testenv "uninit" [] -- exit status not checked; does abnormal exit
	checkregularfile annexedfile
	doesDirectoryExist ".git" @? ".git vanished in uninit"

test_uninit_inbranch :: TestEnv -> Assertion
test_uninit_inbranch testenv = intmpclonerepoInDirect testenv $ do
	boolSystem "git" [Params "checkout git-annex"] @? "git checkout git-annex"
	not <$> git_annex testenv "uninit" [] @? "uninit failed to fail when git-annex branch was checked out"

test_upgrade :: TestEnv -> Assertion
test_upgrade testenv = intmpclonerepo testenv $ do
	git_annex testenv "upgrade" [] @? "upgrade from same version failed"

test_whereis :: TestEnv -> Assertion
test_whereis testenv = intmpclonerepo testenv $ do
	annexed_notpresent annexedfile
	git_annex testenv "whereis" [annexedfile] @? "whereis on non-present file failed"
	git_annex testenv "untrust" ["origin"] @? "untrust failed"
	not <$> git_annex testenv "whereis" [annexedfile] @? "whereis on non-present file only present in untrusted repo failed to fail"
	git_annex testenv "get" [annexedfile] @? "get failed"
	annexed_present annexedfile
	git_annex testenv "whereis" [annexedfile] @? "whereis on present file failed"

test_hook_remote :: TestEnv -> Assertion
test_hook_remote testenv = intmpclonerepo testenv $ do
#ifndef mingw32_HOST_OS
	git_annex testenv "initremote" (words "foo type=hook encryption=none hooktype=foo") @? "initremote failed"
	createDirectory dir
	git_config "annex.foo-store-hook" $
		"cp $ANNEX_FILE " ++ loc
	git_config "annex.foo-retrieve-hook" $
		"cp " ++ loc ++ " $ANNEX_FILE"
	git_config "annex.foo-remove-hook" $
		"rm -f " ++ loc
	git_config "annex.foo-checkpresent-hook" $
		"if [ -e " ++ loc ++ " ]; then echo $ANNEX_KEY; fi"
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "copy" [annexedfile, "--to", "foo"] @? "copy --to hook remote failed"
	annexed_present annexedfile
	git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed"
	annexed_notpresent annexedfile
	git_annex testenv "move" [annexedfile, "--from", "foo"] @? "move --from hook remote failed"
	annexed_present annexedfile
	not <$> git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed to fail"
	annexed_present annexedfile
  where
	dir = "dir"
	loc = dir ++ "/$ANNEX_KEY"
	git_config k v = boolSystem "git" [Param "config", Param k, Param v]
		@? "git config failed"
#else
	-- this test doesn't work in Windows TODO
	noop
#endif

test_directory_remote :: TestEnv -> Assertion
test_directory_remote testenv = intmpclonerepo testenv $ do
	createDirectory "dir"
	git_annex testenv "initremote" (words "foo type=directory encryption=none directory=dir") @? "initremote failed"
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "copy" [annexedfile, "--to", "foo"] @? "copy --to directory remote failed"
	annexed_present annexedfile
	git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed"
	annexed_notpresent annexedfile
	git_annex testenv "move" [annexedfile, "--from", "foo"] @? "move --from directory remote failed"
	annexed_present annexedfile
	not <$> git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed to fail"
	annexed_present annexedfile

test_rsync_remote :: TestEnv -> Assertion
test_rsync_remote testenv = intmpclonerepo testenv $ do
#ifndef mingw32_HOST_OS
	createDirectory "dir"
	git_annex testenv "initremote" (words "foo type=rsync encryption=none rsyncurl=dir") @? "initremote failed"
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "copy" [annexedfile, "--to", "foo"] @? "copy --to rsync remote failed"
	annexed_present annexedfile
	git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed"
	annexed_notpresent annexedfile
	git_annex testenv "move" [annexedfile, "--from", "foo"] @? "move --from rsync remote failed"
	annexed_present annexedfile
	not <$> git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed to fail"
	annexed_present annexedfile
#else
	-- Rsync remotes with a rsyncurl of a directory do not currently
	-- work on Windows.
	noop
#endif

test_bup_remote :: TestEnv -> Assertion
test_bup_remote testenv = intmpclonerepo testenv $ when Build.SysConfig.bup $ do
	dir <- absPath "dir" -- bup special remote needs an absolute path
	createDirectory dir
	git_annex testenv "initremote" (words $ "foo type=bup encryption=none buprepo="++dir) @? "initremote failed"
	git_annex testenv "get" [annexedfile] @? "get of file failed"
	annexed_present annexedfile
	git_annex testenv "copy" [annexedfile, "--to", "foo"] @? "copy --to bup remote failed"
	annexed_present annexedfile
	git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed"
	annexed_notpresent annexedfile
	git_annex testenv "copy" [annexedfile, "--from", "foo"] @? "copy --from bup remote failed"
	annexed_present annexedfile
	not <$> git_annex testenv "move" [annexedfile, "--from", "foo"] @? "move --from bup remote failed to fail"
	annexed_present annexedfile

-- gpg is not a build dependency, so only test when it's available
test_crypto :: TestEnv -> Assertion
#ifndef mingw32_HOST_OS
test_crypto testenv = do
	testscheme "shared"
	testscheme "hybrid"
	testscheme "pubkey"
  where
	testscheme scheme = intmpclonerepo testenv $ whenM (Utility.Path.inPath Utility.Gpg.gpgcmd) $ do
		Utility.Gpg.testTestHarness @? "test harness self-test failed"
		Utility.Gpg.testHarness $ do
			createDirectory "dir"
			let a cmd = git_annex testenv cmd $
				[ "foo"
				, "type=directory"
				, "encryption=" ++ scheme
				, "directory=dir"
				, "highRandomQuality=false"
				] ++ if scheme `elem` ["hybrid","pubkey"]
					then ["keyid=" ++ Utility.Gpg.testKeyId]
					else []
			a "initremote" @? "initremote failed"
			not <$> a "initremote" @? "initremote failed to fail when run twice in a row"
			a "enableremote" @? "enableremote failed"
			a "enableremote" @? "enableremote failed when run twice in a row"
			git_annex testenv "get" [annexedfile] @? "get of file failed"
			annexed_present annexedfile
			git_annex testenv "copy" [annexedfile, "--to", "foo"] @? "copy --to encrypted remote failed"
			(c,k) <- annexeval $ do
				uuid <- Remote.nameToUUID "foo"
				rs <- Logs.Remote.readRemoteLog
				Just k <- Backend.lookupFile annexedfile
				return (fromJust $ M.lookup uuid rs, k)
			let key = if scheme `elem` ["hybrid","pubkey"]
					then Just $ Utility.Gpg.KeyIds [Utility.Gpg.testKeyId]
					else Nothing
			testEncryptedRemote scheme key c [k] @? "invalid crypto setup"
	
			annexed_present annexedfile
			git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed"
			annexed_notpresent annexedfile
			git_annex testenv "move" [annexedfile, "--from", "foo"] @? "move --from encrypted remote failed"
			annexed_present annexedfile
			not <$> git_annex testenv "drop" [annexedfile, "--numcopies=2"] @? "drop failed to fail"
			annexed_present annexedfile
	{- Ensure the configuration complies with the encryption scheme, and
	 - that all keys are encrypted properly for the given directory remote. -}
	testEncryptedRemote scheme ks c keys = case Remote.Helper.Encryptable.extractCipher c of
		Just cip@Crypto.SharedCipher{} | scheme == "shared" && isNothing ks ->
			checkKeys cip Nothing
		Just cip@(Crypto.EncryptedCipher encipher v ks')
			| checkScheme v && keysMatch ks' ->
				checkKeys cip (Just v) <&&> checkCipher encipher ks'
		_ -> return False
	  where
		keysMatch (Utility.Gpg.KeyIds ks') =
			maybe False (\(Utility.Gpg.KeyIds ks2) ->
					sort (nub ks2) == sort (nub ks')) ks
		checkCipher encipher = Utility.Gpg.checkEncryptionStream encipher . Just
		checkScheme Types.Crypto.Hybrid = scheme == "hybrid"
		checkScheme Types.Crypto.PubKey = scheme == "pubkey"
		checkKeys cip mvariant = do
			cipher <- Crypto.decryptCipher cip
			files <- filterM doesFileExist $
				map ("dir" </>) $ concatMap (key2files cipher) keys
			return (not $ null files) <&&> allM (checkFile mvariant) files
		checkFile mvariant filename =
			Utility.Gpg.checkEncryptionFile filename $
				if mvariant == Just Types.Crypto.PubKey then ks else Nothing
		key2files cipher = Locations.keyPaths .
			Crypto.encryptKey Types.Crypto.HmacSha1 cipher
#else
test_crypto _env = putStrLn "gpg testing not implemented on Windows"
#endif

test_add_subdirs :: TestEnv -> Assertion
test_add_subdirs testenv = intmpclonerepo testenv $ do
	createDirectory "dir"
	writeFile ("dir" </> "foo") $ "dir/" ++ content annexedfile
	git_annex testenv "add" ["dir"] @? "add of subdir failed"

	{- Regression test for Windows bug where symlinks were not
	 - calculated correctly for files in subdirs. -}
	git_annex testenv "sync" [] @? "sync failed"
	l <- annexeval $ decodeBS <$> Annex.CatFile.catObject (Git.Types.Ref "HEAD:dir/foo")
	"../.git/annex/" `isPrefixOf` l @? ("symlink from subdir to .git/annex is wrong: " ++ l)

	createDirectory "dir2"
	writeFile ("dir2" </> "foo") $ content annexedfile
	setCurrentDirectory "dir"
	git_annex testenv "add" [".." </> "dir2"] @? "add of ../subdir failed"

-- This is equivilant to running git-annex, but it's all run in-process
-- (when the OS allows) so test coverage collection works.
git_annex :: TestEnv -> String -> [String] -> IO Bool
git_annex testenv command params = do
#ifndef mingw32_HOST_OS
	forM_ (M.toList testenv) $ \(var, val) ->
		Utility.Env.setEnv var val True

	-- catch all errors, including normally fatal errors
	r <- try run::IO (Either SomeException ())
	case r of
		Right _ -> return True
		Left _ -> return False
  where
	run = GitAnnex.run (command:"-q":params)
#else
	Utility.SafeCommand.boolSystemEnv "git-annex"
		(map Param $ command : params)
		(Just $ M.toList testenv)
#endif

{- Runs git-annex and returns its output. -}
git_annex_output :: TestEnv -> String -> [String] -> IO String
git_annex_output testenv command params = do
	got <- Utility.Process.readProcessEnv "git-annex" (command:params)
		(Just $ M.toList testenv)
	-- XXX since the above is a separate process, code coverage stats are
	-- not gathered for things run in it.
	-- Run same command again, to get code coverage.
	_ <- git_annex testenv command params
	return got

git_annex_expectoutput :: TestEnv -> String -> [String] -> [String] -> IO ()
git_annex_expectoutput testenv command params expected = do
	got <- lines <$> git_annex_output testenv command params
	got == expected @? ("unexpected value running " ++ command ++ " " ++ show params ++ " -- got: " ++ show got ++ " expected: " ++ show expected)

-- Runs an action in the current annex. Note that shutdown actions
-- are not run; this should only be used for actions that query state.
annexeval :: Types.Annex a -> IO a
annexeval a = do
	s <- Annex.new =<< Git.CurrentRepo.get
	Annex.eval s $ do
		Annex.setOutput Types.Messages.QuietOutput
		a

innewrepo :: TestEnv -> Assertion -> Assertion
innewrepo testenv a = withgitrepo testenv $ \r -> indir testenv r a

inmainrepo :: TestEnv -> Assertion -> Assertion
inmainrepo testenv = indir testenv mainrepodir

intmpclonerepo :: TestEnv -> Assertion -> Assertion
intmpclonerepo testenv a = withtmpclonerepo testenv False $ \r -> indir testenv r a

intmpclonerepoInDirect :: TestEnv -> Assertion -> Assertion
intmpclonerepoInDirect testenv a = intmpclonerepo testenv $
	ifM isdirect
		( putStrLn "not supported in direct mode; skipping"
		, a
		)
  where
  	isdirect = annexeval $ do
		Annex.Init.initialize Nothing
		Config.isDirect

checkRepo :: Types.Annex a -> FilePath -> IO a
checkRepo getval d = do
	s <- Annex.new =<< Git.Construct.fromPath d
	Annex.eval s getval

isInDirect :: FilePath -> IO Bool
isInDirect = checkRepo (not <$> Config.isDirect)

intmpbareclonerepo :: TestEnv -> Assertion -> Assertion
intmpbareclonerepo testenv a = withtmpclonerepo testenv True $ \r -> indir testenv r a

withtmpclonerepo :: TestEnv -> Bool -> (FilePath -> Assertion) -> Assertion
withtmpclonerepo testenv bare a = do
	dir <- tmprepodir
	bracket (clonerepo testenv mainrepodir dir bare) cleanup a

disconnectOrigin :: Assertion
disconnectOrigin = boolSystem "git" [Params "remote rm origin"] @? "remote rm"

withgitrepo :: TestEnv -> (FilePath -> Assertion) -> Assertion
withgitrepo testenv = bracket (setuprepo testenv mainrepodir) return

indir :: TestEnv -> FilePath -> Assertion -> Assertion
indir testenv dir a = do
	currdir <- getCurrentDirectory
	-- Assertion failures throw non-IO errors; catch
	-- any type of error and change back to currdir before
	-- rethrowing.
	r <- bracket_ (changeToTmpDir testenv dir) (setCurrentDirectory currdir)
		(try a::IO (Either SomeException ()))
	case r of
		Right () -> return ()
		Left e -> throw e

setuprepo :: TestEnv -> FilePath -> IO FilePath
setuprepo testenv dir = do
	cleanup dir
	ensuretmpdir
	boolSystem "git" [Params "init -q", File dir] @? "git init failed"
	configrepo testenv dir
	return dir

-- clones are always done as local clones; we cannot test ssh clones
clonerepo :: TestEnv -> FilePath -> FilePath -> Bool -> IO FilePath
clonerepo testenv old new bare = do
	cleanup new
	ensuretmpdir
	let b = if bare then " --bare" else ""
	boolSystem "git" [Params ("clone -q" ++ b), File old, File new] @? "git clone failed"
	configrepo testenv new
	indir testenv new $
		git_annex testenv "init" ["-q", new] @? "git annex init failed"
	unless bare $
		indir testenv new $
			handleforcedirect testenv
	return new

configrepo :: TestEnv -> FilePath -> IO ()
configrepo testenv dir = indir testenv dir $ do
	-- ensure git is set up to let commits happen
	boolSystem "git" [Params "config user.name", Param "Test User"] @? "git config failed"
	boolSystem "git" [Params "config user.email test@example.com"] @? "git config failed"
	-- avoid signed commits by test suite
	boolSystem "git" [Params "config commit.gpgsign false"] @? "git config failed"

handleforcedirect :: TestEnv -> IO ()
handleforcedirect testenv = when (M.lookup "FORCEDIRECT" testenv == Just "1") $
	git_annex testenv "direct" ["-q"] @? "git annex direct failed"
	
ensuretmpdir :: IO ()
ensuretmpdir = do
	e <- doesDirectoryExist tmpdir
	unless e $
		createDirectory tmpdir

cleanup :: FilePath -> IO ()
cleanup = cleanup' False

cleanup' :: Bool -> FilePath -> IO ()
cleanup' final dir = whenM (doesDirectoryExist dir) $ do
	Command.Uninit.prepareRemoveAnnexDir dir
	-- This sometimes fails on Windows, due to some files
	-- being still opened by a subprocess.
	catchIO (removeDirectoryRecursive dir) $ \e ->
		when final $ do
			print e
			putStrLn "sleeping 10 seconds and will retry directory cleanup"
			Utility.ThreadScheduler.threadDelaySeconds (Utility.ThreadScheduler.Seconds 10)
			whenM (doesDirectoryExist dir) $
				removeDirectoryRecursive dir
	
checklink :: FilePath -> Assertion
checklink f = do
	s <- getSymbolicLinkStatus f
	-- in direct mode, it may be a symlink, or not, depending
	-- on whether the content is present.
	unlessM (annexeval Config.isDirect) $
		isSymbolicLink s @? f ++ " is not a symlink"

checkregularfile :: FilePath -> Assertion
checkregularfile f = do
	s <- getSymbolicLinkStatus f
	isRegularFile s @? f ++ " is not a normal file"
	return ()

checkcontent :: FilePath -> Assertion
checkcontent f = do
	c <- Utility.Exception.catchDefaultIO "could not read file" $ readFile f
	assertEqual ("checkcontent " ++ f) (content f) c

checkunwritable :: FilePath -> Assertion
checkunwritable f = unlessM (annexeval Config.isDirect) $ do
	-- Look at permissions bits rather than trying to write or
	-- using fileAccess because if run as root, any file can be
	-- modified despite permissions.
	s <- getFileStatus f
	let mode = fileMode s
	when (mode == mode `unionFileModes` ownerWriteMode) $
		assertFailure $ "able to modify annexed file's " ++ f ++ " content"

checkwritable :: FilePath -> Assertion
checkwritable f = do
	r <- tryIO $ writeFile f $ content f
	case r of
		Left _ -> assertFailure $ "unable to modify " ++ f
		Right _ -> return ()

checkdangling :: FilePath -> Assertion
checkdangling f = ifM (annexeval Config.crippledFileSystem)
	( return () -- probably no real symlinks to test
	, do
		r <- tryIO $ readFile f
		case r of
			Left _ -> return () -- expected; dangling link
			Right _ -> assertFailure $ f ++ " was not a dangling link as expected"
	)

checklocationlog :: FilePath -> Bool -> Assertion
checklocationlog f expected = do
	thisuuid <- annexeval Annex.UUID.getUUID
	r <- annexeval $ Backend.lookupFile f
	case r of
		Just k -> do
			uuids <- annexeval $ Remote.keyLocations k
			assertEqual ("bad content in location log for " ++ f ++ " key " ++ Types.Key.key2file k ++ " uuid " ++ show thisuuid)
				expected (thisuuid `elem` uuids)
		_ -> assertFailure $ f ++ " failed to look up key"

checkbackend :: FilePath -> Types.Backend -> Assertion
checkbackend file expected = do
	b <- annexeval $ maybe (return Nothing) (Backend.getBackend file) 
		=<< Backend.lookupFile file
	assertEqual ("backend for " ++ file) (Just expected) b

inlocationlog :: FilePath -> Assertion
inlocationlog f = checklocationlog f True

notinlocationlog :: FilePath -> Assertion
notinlocationlog f = checklocationlog f False

runchecks :: [FilePath -> Assertion] -> FilePath -> Assertion
runchecks [] _ = return ()
runchecks (a:as) f = do
	a f
	runchecks as f

annexed_notpresent :: FilePath -> Assertion
annexed_notpresent = runchecks
	[checklink, checkdangling, notinlocationlog]

annexed_present :: FilePath -> Assertion
annexed_present = runchecks
	[checklink, checkcontent, checkunwritable, inlocationlog]

unannexed :: FilePath -> Assertion
unannexed = runchecks [checkregularfile, checkcontent, checkwritable]

withTestEnv :: Bool -> (IO TestEnv -> TestTree) -> TestTree
withTestEnv forcedirect = withResource prepare release
  where
	prepare = do
		testenv <- prepareTestEnv forcedirect
		case tryIngredients [consoleTestReporter] mempty (initTests testenv) of
			Nothing -> error "No tests found!?"
			Just act -> unlessM act $
				error "init tests failed! cannot continue"
		return testenv
	release = releaseTestEnv

releaseTestEnv :: TestEnv -> IO ()
releaseTestEnv _env = cleanup' True tmpdir

prepareTestEnv :: Bool -> IO TestEnv
prepareTestEnv forcedirect = do
	whenM (doesDirectoryExist tmpdir) $
		error $ "The temporary directory " ++ tmpdir ++ " already exists; cannot run test suite."

	currdir <- getCurrentDirectory
	p <- Utility.Env.getEnvDefault "PATH" ""

	environ <- Utility.Env.getEnvironment
	let newenv =
		-- Ensure that the just-built git annex is used.
		[ ("PATH", currdir ++ [searchPathSeparator] ++ p)
		, ("TOPDIR", currdir)
		-- Avoid git complaining if it cannot determine the user's
		-- email address, or exploding if it doesn't know the user's
		-- name.
		, ("GIT_AUTHOR_EMAIL", "test@example.com")
		, ("GIT_AUTHOR_NAME", "git-annex test")
		, ("GIT_COMMITTER_EMAIL", "test@example.com")
		, ("GIT_COMMITTER_NAME", "git-annex test")
		-- force gpg into batch mode for the tests
		, ("GPG_BATCH", "1")
		, ("FORCEDIRECT", if forcedirect then "1" else "")
		]

	return $ M.fromList newenv `M.union` M.fromList environ

changeToTmpDir :: TestEnv -> FilePath -> IO ()
changeToTmpDir testenv t = do
	let topdir = fromMaybe "" $ M.lookup "TOPDIR" testenv
	setCurrentDirectory $ topdir ++ "/" ++ t

tmpdir :: String
tmpdir = ".t"

mainrepodir :: FilePath
mainrepodir = tmpdir </> "repo"

tmprepodir :: IO FilePath
tmprepodir = go (0 :: Int)
  where
	go n = do
		let d = tmpdir </> "tmprepo" ++ show n
		ifM (doesDirectoryExist d)
			( go $ n + 1
			, return d
			)

annexedfile :: String
annexedfile = "foo"

wormannexedfile :: String
wormannexedfile = "apple"

sha1annexedfile :: String
sha1annexedfile = "sha1foo"

sha1annexedfiledup :: String
sha1annexedfiledup = "sha1foodup"

ingitfile :: String
ingitfile = "bar"

content :: FilePath -> String		
content f
	| f == annexedfile = "annexed file content"
	| f == ingitfile = "normal file content"
	| f == sha1annexedfile ="sha1 annexed file content"
	| f == sha1annexedfiledup = content sha1annexedfile
	| f == wormannexedfile = "worm annexed file content"
	| otherwise = "unknown file " ++ f

changecontent :: FilePath -> IO ()
changecontent f = writeFile f $ changedcontent f

changedcontent :: FilePath -> String
changedcontent f = content f ++ " (modified)"

backendSHA1 :: Types.Backend
backendSHA1 = backend_ "SHA1"

backendSHA256 :: Types.Backend
backendSHA256 = backend_ "SHA256"

backendWORM :: Types.Backend
backendWORM = backend_ "WORM"

backend_ :: String -> Types.Backend
backend_ = Backend.lookupBackendName