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## Copyright (c) Eduardo Julian. All rights reserved.
## This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
## If a copy of the MPL was not distributed with this file,
## You can obtain one at http://mozilla.org/MPL/2.0/.
(;module:
lux
(lux [compiler #+ Monad<Lux> with-gensyms]
(macro ["s" syntax #+ syntax: Syntax]
[ast])
(control functor
applicative
monad)
(concurrency [promise #+ Promise Monad<Promise>])
(data (struct [list "List/" Monad<List>])
[product]
[text]
text/format
[error #* "Error/" Monad<Error>])
(codata [io #- run])
(math ["R" random])
[host #- try]))
## [Host]
(jvm-import java.lang.System
(#static exit [int] #io void)
(#static currentTimeMillis [] #io long))
(def: #hidden exit
(IO Unit)
(System.exit 0))
## [Types]
(type: #export Test
(Promise (Error Unit)))
## [Values]
(def: #export (fail message)
(All [a] (-> Text Test))
(:: Monad<Promise> wrap (#;Left message)))
(def: #export (assert message test)
(-> Text Bool Test)
(if test
(:: Monad<Promise> wrap (#;Right []))
(fail message)))
(def: #hidden (run' tests)
(-> (List [Text (IO Test) Text]) (Promise Unit))
(do Monad<Promise>
[printings (mapM @
(: (-> [Text (IO Test) Text] (Promise Unit))
(lambda [[module test description]]
(do @
[#let [pre (io;run (System.currentTimeMillis []))]
outcome (io;run test)
#let [post (io;run (System.currentTimeMillis []))]]
(case outcome
(#;Left error)
(wrap (log! (format "Error: " (:: text;Codec<Text,Text> encode description) " @ " module "\n" error "\n")))
_
(exec (log! (format "Success: " (:: text;Codec<Text,Text> encode description) " @ " module
" in " (%i (i.- pre post)) "ms"))
(wrap []))))))
tests)]
(wrap [])))
(def: pcg-32-magic-inc Nat +12345)
(type: #export Seed Nat)
(def: (try seed random-test)
(-> Seed (R;Random Test) (Promise (Error Seed)))
(let [[prng [new-seed test]] (R;run (R;pcg-32 [pcg-32-magic-inc seed])
(do R;Monad<Random>
[test random-test
next-seed R;nat]
(wrap [next-seed test])))]
(do Monad<Promise>
[result test]
(case result
(#;Left error)
(wrap (#;Left error))
(#;Right _)
(wrap (#;Right new-seed))))))
(def: (repeat' seed times random-test)
(-> Seed Nat (R;Random Test) Test)
(if (n.= +0 times)
(fail "Can't try a test 0 times.")
(do Monad<Promise>
[output (try seed random-test)]
(case output
(#;Left error)
(fail (format "Test failed with this seed: " (%n seed) "\n" error))
(#;Right seed')
(if (n.= +1 times)
(wrap (#;Right []))
(repeat' seed' (n.dec times) random-test))
))))
(def: #export (repeat times random-test)
(-> Nat (R;Random Test) Test)
(repeat' (int-to-nat (io;run (System.currentTimeMillis [])))
times
random-test))
## [Syntax]
(type: Property-Test
{#seed (Maybe (Either Nat Ident))
#bindings (List [AST AST])
#body AST})
(type: Test-Kind
(#Property Property-Test)
(#Simple AST))
(def: propery-test^
(Syntax Property-Test)
($_ s;seq
(s;opt (s;alt s;nat
s;symbol))
(s;tuple (s;some (s;seq s;any s;any)))
s;any))
(def: test^
(Syntax Test-Kind)
(s;alt propery-test^
s;any))
(def: (pair-to-list [x y])
(All [a] (-> [a a] (List a)))
(list x y))
(syntax: #export (test: description {body test^})
{#;doc (doc "Macro for definint tests."
(test: "lux/pipe exports"
(all (match 1 (|> 20
(i.* 3)
(i.+ 4)
(_> 0 i.inc)))
(match 10 (|> 5
(@> (i.+ @ @))))
(match 15 (|> 5
(?> [i.even?] [(i.* 2)]
[i.odd?] [(i.* 3)]
[(_> -1)])))
)))}
(let [body (case body
(#Property seed bindings body)
(let [seed' (case seed
#;None
(' +100)
(#;Some (#;Left value))
(ast;nat value)
(#;Some (#;Right var))
(ast;symbol var))
bindings' (|> bindings (List/map pair-to-list) List/join)]
(` (repeat (~ seed')
(do R;Monad<Random>
[(~@ bindings')]
((~' wrap) (~ body))))))
(#Simple body)
body)]
(with-gensyms [g!test]
(wrap (list (` (def: #export (~ g!test)
{#;;test (#;TextM (~ description))}
(IO Test)
(io (~ body)))))))))
(def: (exported-tests module-name)
(-> Text (Lux (List [Text Text Text])))
(do Monad<Lux>
[defs (compiler;exports module-name)]
(wrap (|> defs
(List/map (lambda [[def-name [_ def-anns _]]]
(case (compiler;get-text-ann (ident-for #;;test) def-anns)
(#;Some description)
[true module-name def-name description]
_
[false module-name def-name ""])))
(list;filter product;left)
(List/map product;right)))))
(syntax: #export (run)
{#;doc (doc "Runs all the tests defined on the current module, and in all imported modules."
(run))}
(with-gensyms [g!_]
(do @
[current-module compiler;current-module-name
modules (compiler;imported-modules current-module)
tests (: (Lux (List [Text Text Text]))
(:: @ map List/join (mapM @ exported-tests (#;Cons current-module modules))))
#let [tests+ (List/map (lambda [[module-name test desc]]
(` [(~ (ast;text module-name)) (~ (ast;symbol [module-name test])) (~ (ast;text desc))]))
tests)
groups (list;split-all (|> (list;size tests+) (n./ promise;concurrency-level) (n.+ +1) (n.min +16))
tests+)]]
(wrap (list (` (: (IO Unit)
(io (exec (do Monad<Promise>
[(~@ (List/join (List/map (lambda [group]
(list g!_ (` (run' (list (~@ group))))))
groups)))]
(exec (log! "Test-suite finished!")
(promise;future exit)))
[])))))))))
(def: #export (seq left right)
(-> Test Test Test)
(do Monad<Promise>
[=left left
=right right]
(case [=left =right]
(^or [(#;Left error) _]
[_ (#;Left error)])
(wrap (#;Left error))
_
(wrap (#;Right [])))))
(def: #export (alt left right)
(-> Test Test Test)
(do Monad<Promise>
[=left left
=right right]
(case =left
(#;Right _)
(wrap =left)
_
(wrap =right))))
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