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|
(.using
[library
[lux (.except)
["_" test (.only Test)]
[abstract
[predicate (.only Predicate)]
[monad (.only do)]]
[control
["[0]" try (.only Try)]
["[0]" exception]
[concurrency
["[0]" async (.only Async)]]]
[data
["[0]" binary (.only Binary) ("[1]#[0]" equivalence)]
["[0]" text ("[1]#[0]" equivalence)
["%" format (.only format)]]
[collection
["[0]" list]]]
[math
["[0]" random (.only Random) ("[1]#[0]" monad)]]]]
[\\library
["[0]" / (.only)
["/[1]" //]]]
[////
[data
["$[0]" binary]]])
(def: concern
(Random [/.Concern (Predicate /.Concern)])
(all random.either
(random#in [/.creation /.creation?])
(random#in [/.modification /.modification?])
(random#in [/.deletion /.deletion?])
))
(def: concern##test
Test
(all _.and
(_.coverage [/.creation /.creation?]
(and (/.creation? /.creation)
(not (/.creation? /.modification))
(not (/.creation? /.deletion))))
(_.coverage [/.modification /.modification?]
(and (not (/.modification? /.creation))
(/.modification? /.modification)
(not (/.modification? /.deletion))))
(_.coverage [/.deletion /.deletion?]
(and (not (/.deletion? /.creation))
(not (/.deletion? /.modification))
(/.deletion? /.deletion)))
(do random.monad
[left ..concern
right (random.only (|>> (same? left) not)
..concern)
.let [[left left?] left
[right right?] right]]
(_.coverage [/.also]
(let [composition (/.also left right)]
(and (left? composition)
(right? composition)))))
(_.coverage [/.all]
(and (/.creation? /.all)
(/.modification? /.all)
(/.deletion? /.all)))
))
(def: exception
Test
(do [! random.monad]
[directory (random.alphabetic 5)
.let [[fs watcher] (/.mock "/")]]
(all _.and
(in (do async.monad
[?concern (# watcher concern directory)
?stop (# watcher stop directory)]
(_.coverage' [/.not_being_watched]
(and (case ?concern
{try.#Failure error}
(exception.match? /.not_being_watched error)
{try.#Success _}
false)
(case ?stop
{try.#Failure error}
(exception.match? /.not_being_watched error)
{try.#Success _}
false)))))
)))
(def: (no_events_prior_to_creation! fs watcher directory)
(-> (//.System Async) (/.Watcher Async) //.Path (Async (Try Bit)))
(do [! (try.with async.monad)]
[_ (# fs make_directory directory)
_ (# watcher start /.all directory)]
(|> (# watcher poll [])
(# ! each list.empty?))))
(def: (after_creation! fs watcher expected_path)
(-> (//.System Async) (/.Watcher Async) //.Path (Async (Try Bit)))
(do (try.with async.monad)
[_ (is (Async (Try Any))
(//.make_file async.monad fs (binary.empty 0) expected_path))
poll/pre (# watcher poll [])
poll/post (# watcher poll [])]
(in (and (case poll/pre
(pattern (list [concern actual_path]))
(and (text#= expected_path actual_path)
(and (/.creation? concern)
(not (/.modification? concern))
(not (/.deletion? concern))))
_
false)
(list.empty? poll/post)))))
(def: (after_modification! fs watcher data expected_path)
(-> (//.System Async) (/.Watcher Async) Binary //.Path (Async (Try Bit)))
(do (try.with async.monad)
[_ (async.after 1 {try.#Success "Delay to make sure the over_write time-stamp always changes."})
_ (# fs write expected_path data)
poll/2 (# watcher poll [])
poll/2' (# watcher poll [])]
(in (and (case poll/2
(pattern (list [concern actual_path]))
(and (text#= expected_path actual_path)
(and (not (/.creation? concern))
(/.modification? concern)
(not (/.deletion? concern))))
_
false)
(list.empty? poll/2')))))
(def: (after_deletion! fs watcher expected_path)
(-> (//.System Async) (/.Watcher Async) //.Path (Async (Try Bit)))
(do (try.with async.monad)
[_ (# fs delete expected_path)
poll/3 (# watcher poll [])
poll/3' (# watcher poll [])]
(in (and (case poll/3
(pattern (list [concern actual_path]))
(and (not (/.creation? concern))
(not (/.modification? concern))
(/.deletion? concern))
_
false)
(list.empty? poll/3')))))
(def: .public test
Test
(<| (_.covering /._)
(_.for [/.Watcher])
(all _.and
(_.for [/.Concern]
..concern##test)
..exception
(do [! random.monad]
[directory (random.alphabetic 5)
.let [/ "/"
[fs watcher] (/.mock /)]
expected_path (# ! each (|>> (format directory /))
(random.alphabetic 5))
data ($binary.random 10)]
(in (do [! async.monad]
[verdict (do (try.with !)
[no_events_prior_to_creation!
(..no_events_prior_to_creation! fs watcher directory)
after_creation!
(..after_creation! fs watcher expected_path)
after_modification!
(..after_modification! fs watcher data expected_path)
after_deletion!
(..after_deletion! fs watcher expected_path)]
(in (and no_events_prior_to_creation!
after_creation!
after_modification!
after_deletion!)))]
(_.coverage' [/.mock /.polling]
(try.else false verdict)))))
(do random.monad
[directory (random.alphabetic 5)
.let [/ "/"
[fs watcher] (/.mock /)]]
(in (do async.monad
[started? (# watcher start /.all directory)]
(_.coverage' [/.cannot_poll_a_non_existent_directory]
(case started?
{try.#Success _}
false
{try.#Failure error}
(exception.match? /.cannot_poll_a_non_existent_directory error))))))
)))
|
