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Promise.vimspec
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Promise.vimspec
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function! s:wait_has_key(obj, name) abort
let timeout_sec = 5
let i = 0
while i < timeout_sec * 100
sleep 10m
if has_key(a:obj, a:name)
return
endif
let i += 1
endwhile
throw printf("s:wait_has_key(): After %ds, the given object does not have key '%s': %s", timeout_sec, a:name, a:obj)
endfunction
function! s:resolver(resolve, reject) abort
call a:resolve('ok')
endfunction
function! s:rejector(resolve, reject) abort
call a:reject('error')
endfunction
Describe Async.Promise
Before all
let P = vital#vital#import('Async.Promise')
" Constants
let PENDING = 0
let FULFILLED = 1
let REJECTED = 2
" Utilities
let Wait = {ms -> P.new({res -> timer_start(ms, res)})}
let RejectAfter = {ms -> P.new({_, rej -> timer_start(ms, rej)})}
End
Describe .new()
It should create a Promise object with proper state synchronously
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty')]
let p = P.new({resolve -> resolve(l:Val)})
Assert Equals(p._state, FULFILLED)
Assert HasKey(p, '_vital_promise')
let p = P.new({_, reject -> reject(l:Val)})
Assert Equals(p._state, REJECTED)
Assert HasKey(p, '_vital_promise')
unlet l:Val
endfor
End
It should make settled Promise with v:null when no argument is given to resolve()/reject()
let l = l:
call P.new({resolve -> resolve()}).then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, v:null)
unlet result
call P.new({_, reject -> reject()}).catch({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, v:null)
End
It should create a rejected Promise object when an exception was thrown
let l = l:
let p = P.new({-> execute('throw "ERROR"')})
Assert Equals(p._state, REJECTED)
call p.catch({exc -> extend(l, {'err': exc})})
call s:wait_has_key(l, 'err')
Assert HasKey(err, 'exception')
Assert HasKey(err, 'throwpoint')
Assert Equals(err.exception, 'ERROR')
Assert NotEmpty(err.throwpoint)
unlet err
let p = P.new({-> execute('echom dummy')})
Assert Equals(p._state, REJECTED)
call p.catch({exc -> extend(l, {'err': exc})})
call s:wait_has_key(l, 'err')
Assert HasKey(err, 'exception')
Assert HasKey(err, 'throwpoint')
Assert Match(err.exception, '^Vim(echomsg):E121:')
Assert NotEmpty(err.throwpoint)
End
It should do nothing when calling resolve()/reject() after resolved
let l = l:
let p = P.new({resolve -> resolve(42) || resolve(99)})
Assert Equals(p._state, FULFILLED)
call p.then({v -> extend(l, {'result' : v})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
unlet result
let p = P.new({resolve, reject -> resolve(52) || reject(99)})
Assert Equals(p._state, FULFILLED)
call p.then({v -> extend(l, {'result' : v})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 52)
End
It should do nothing when calling resolve()/reject() after rejected
let l = l:
let p = P.new({resolve, reject -> reject(42) || resolve(99)})
Assert Equals(p._state, REJECTED)
call p.catch({v -> extend(l, {'reason' : v})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 42)
unlet reason
let p = P.new({_, reject -> reject(52) || reject(99)})
Assert Equals(p._state, REJECTED)
call p.catch({v -> extend(l, {'reason' : v})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 52)
End
It should ignore thrown exception when the Promise is already settled
let l = l:
call P.new({resolve -> resolve('ok') || execute('throw "HELLO"')}).then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 'ok')
unlet result
call P.new({_, reject -> reject('error') || execute('throw "HELLO"')}).catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 'error')
End
It should be pending forever when neither resolve() nor reject() is called
let l = l:
let done = 0
let p = P.new({-> 42})
Assert Equals(p._state, PENDING)
let p = p.then({-> extend(l, {'done' : 1})})
let p = p.catch({-> extend(l, {'done' : 2})})
sleep 30m
Assert Equals(p._state, PENDING)
Assert Equals(done, 0)
End
It can take funcref as constructor
let l = l:
call P.new(function('s:resolver')).then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 'ok')
unlet result
call P.new(function('s:rejector')).catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 'error')
End
It should assimilate when fulfilled Promise is given to resolve()
let p = P.new({resolve -> resolve(P.resolve('ok'))})
Assert Equals(p._state, FULFILLED)
let l = l:
call p.then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 'ok')
End
It should not create resolved Promise with rejected Promise
let p = P.new({resolve -> resolve(P.reject('error'))})
Assert Equals(p._state, REJECTED)
let l = l:
call p.catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 'error')
End
End
Describe Promise object
Describe .then()
It should call its callback asynchronously
let l = l:
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty')]
let p = P.new({resolve -> resolve(Val)})
Assert Equals(p._state, FULFILLED)
let p2 = p.then({x -> x}).then({r -> extend(l, {'Result' : r})})
Assert False(exists('l:Result'))
call s:wait_has_key(l, 'Result')
Assert Equals(Result, Val)
Assert Equals(p2._state, FULFILLED)
unlet l:Result
unlet l:Val
endfor
End
It should be chainable
let l = l:
let p = P.resolve(42).then({r -> P.resolve(r + 42)}).then({r -> extend(l, {'result' : r})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 84)
Assert Equals(p._state, FULFILLED)
End
It should be chainable asynchronously
let l = l:
let p = Wait(50).then({-> Wait(50)}).then({-> extend(l, {'result' : 42})})
Assert Equals(p._state, PENDING)
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
Assert Equals(p._state, FULFILLED)
End
It should resolve with funcref directly
let l = l:
let p = P.resolve(50).then(Wait).then({-> extend(l, {'result' : 42})})
Assert Equals(p._state, PENDING)
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
Assert Equals(p._state, FULFILLED)
End
It should accept to resolve multiple times
let l = l:
let p = P.resolve(42)
let p2 = p.then({v -> extend(l, {'value' : v + 10})})
call s:wait_has_key(l, 'value')
Assert Equals(value, 52)
Assert Equals(p2._state, FULFILLED)
unlet value
let p2 = p.then({v -> extend(l, {'value' : v + 20})})
call s:wait_has_key(l, 'value')
Assert Equals(value, 62)
Assert Equals(p2._state, FULFILLED)
End
It should accept to resolve multiple times asynchronously
let l = l:
let value = 100
let p1 = Wait(50).then({-> 100})
let p2 = p1.then({v -> extend(l, {'value' : l.value + v, 'ok1': v:true})})
let p3 = p1.then({v -> extend(l, {'value' : l.value + v, 'ok2': v:true})})
for p in [p1, p2, p3]
Assert Equals(p._state, PENDING)
endfor
call s:wait_has_key(l, 'ok1')
call s:wait_has_key(l, 'ok2')
for p in [p1, p2, p3]
Assert Equals(p._state, FULFILLED)
endfor
Assert Equals(value, 300)
End
It should reject Promise when an exception was thrown
let l = l:
let p = P.resolve(42).then({-> execute('throw "ERROR"')})
call p.catch({exc -> extend(l, {'err': exc})})
call s:wait_has_key(l, 'err')
Assert Equals(p._state, REJECTED)
Assert HasKey(err, 'exception')
Assert HasKey(err, 'throwpoint')
Assert Equals(err.exception, 'ERROR')
unlet err
let p = P.resolve(42).then({-> execute('echom dummy')})
call p.catch({exc -> extend(l, {'err': exc})})
call s:wait_has_key(l, 'err')
Assert Equals(p._state, REJECTED)
Assert HasKey(err, 'exception')
Assert HasKey(err, 'throwpoint')
Assert Match(err.exception, '^Vim(echomsg):E121:')
End
It can omit all parameters
let l = l:
call P.resolve(42).then().then().then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
End
It should stop chain as soon as Promise is rejected
let p = P.resolve(42).then({x -> x + 1}).then({x -> execute('throw x')}).then({x -> x + 1})
let l = l:
call p.catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(p._state, REJECTED)
Assert Equals(reason.exception, 43)
End
It can take rejection handler at 2nd parameter
let l = l:
let p = P.reject(42).then({x -> extend(l, {'did' : 'resolve'})}, {x -> extend(l, {'did' : 'reject'})})
call s:wait_has_key(l, 'did')
Assert Equals(p._state, FULFILLED)
Assert Equals(did, 'reject')
End
End
Describe .catch()
It calls its callback asynchronously
let l = l:
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty')]
let p = P.new({_, reject -> reject(Val)})
let p2 = p.then({-> extend(l, {'Result' : 'Error: resolved to .then'})}).catch({v -> extend(l, {'Result' : v})})
Assert False(exists('l:Result'))
call s:wait_has_key(l, 'Result')
Assert Equals(Result, Val)
Assert Equals(p._state, REJECTED)
Assert Equals(p2._state, FULFILLED)
unlet l:Val
unlet l:Result
endfor
End
It is called when an exceptioin is thrown in upstream
let l = l:
let p = P.new({-> execute('throw 42')})
\.catch({r -> extend(l, {'reason' : r})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason.exception, 42)
Assert Equals(p._state, FULFILLED)
End
It resolves thenable object
let l = l:
let p = P.reject(42).catch({r -> P.resolve(r + 42)}).then({r -> extend(l, {'reason' : r})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 84)
Assert Equals(p._state, FULFILLED)
End
It resolves thenable object asynchronously
let l = l:
let p = RejectAfter(50).catch({-> RejectAfter(50)}).catch({-> extend(l, {'reason' : 42})})
Assert Equals(p._state, PENDING)
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 42)
Assert Equals(p._state, FULFILLED)
End
It resolves by funcref directly
let l = l:
let p = P.reject(50).catch(Wait).then({-> extend(l, {'result' : 42})})
Assert Equals(p._state, PENDING)
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
Assert Equals(p._state, FULFILLED)
End
It should resolve the same rejected promise multiple times
let l = l:
let p = P.reject(42)
let p2 = p.catch({v -> extend(l, {'value' : v + 10})})
call s:wait_has_key(l, 'value')
Assert Equals(value, 52)
Assert Equals(p2._state, FULFILLED)
unlet value
let p2 = p.catch({v -> extend(l, {'value' : v + 20})})
call s:wait_has_key(l, 'value')
Assert Equals(value, 62)
Assert Equals(p2._state, FULFILLED)
End
It should resolve the same rejected promise multiple times asynchronously
let l = l:
let value = 100
let p1 = RejectAfter(50)
let p2 = p1.catch({v -> extend(l, {'value' : l.value + 100, 'ok1' : v:true})})
let p3 = p1.catch({v -> extend(l, {'value' : l.value + 100, 'ok2' : v:true})})
for p in [p1, p2, p3]
Assert Equals(p._state, PENDING)
endfor
call s:wait_has_key(l, 'ok1')
call s:wait_has_key(l, 'ok2')
Assert Equals(p1._state, REJECTED)
for p in [p2, p3]
Assert Equals(p._state, FULFILLED)
endfor
Assert Equals(value, 300)
End
It should reject Promise when an exception was thrown
let l = l:
let p = P.reject(42).catch({-> execute('throw "ERROR"')})
call p.catch({exc -> extend(l, {'reason': exc})})
call s:wait_has_key(l, 'reason')
Assert Equals(p._state, REJECTED)
Assert HasKey(reason, 'exception')
Assert HasKey(reason, 'throwpoint')
Assert Equals(reason.exception, 'ERROR')
unlet reason
let p = P.reject(42).catch({-> execute('echom dummy')})
call p.catch({exc -> extend(l, {'reason': exc})})
call s:wait_has_key(l, 'reason')
Assert Equals(p._state, REJECTED)
Assert HasKey(reason, 'exception')
Assert HasKey(reason, 'throwpoint')
Assert Match(reason.exception, '^Vim(echomsg):E121:')
End
It should pass through the exception when all parameters are omitted
let l = l:
let p = P.reject(42).catch().catch()
call p.catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(p._state, REJECTED)
Assert Equals(reason, 42)
End
End
Describe .finally()
It should call its callback and propagate its parent's value when resolved
let l = l:
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty')]
let p = P.resolve(l:Val).finally({-> extend(l, {'On_resolved': Val})})
call p.then({x -> extend(l, {'Result': x})})
call s:wait_has_key(l, 'Result')
Assert HasKey(l, 'On_resolved')
Assert Equals(p._state, FULFILLED)
Assert Equals(Result, Val)
Assert Equals(l.On_resolved, Val)
unlet l:Val
unlet l:On_resolved
unlet l:Result
endfor
End
It should call its callback and propagate its parent's value when rejected
let l = l:
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty')]
let p = P.reject(l:Val).finally({-> extend(l, {'On_rejected': Val})})
call p.catch({x -> extend(l, {'Err': x})})
call s:wait_has_key(l, 'Err')
Assert HasKey(l, 'On_rejected')
Assert Equals(p._state, REJECTED)
Assert Equals(Err, Val)
Assert Equals(l.On_rejected, Val)
unlet l:Val
unlet l:On_rejected
unlet l:Err
endfor
End
It should just propagates a resolved value when no argument given
let l = l:
let p = P.resolve(42).finally()
call p.then({x -> extend(l, {'result': x})})
call s:wait_has_key(l, 'result')
Assert Equals(p._state, FULFILLED)
Assert Equals(l.result, 42)
End
It should just propagates a rejected value when no argument given
let l = l:
let p = P.reject('ERROR!').finally()
call p.catch({x -> extend(l, {'err': x})})
call s:wait_has_key(l, 'err')
Assert Equals(p._state, REJECTED)
Assert Equals(l.err, 'ERROR!')
End
It should not pass parent's result to its callback
let l = l:
let p = P.resolve(42).finally({x -> extend(l, {'on_finally': x})})
call p.catch({e -> extend(l, {'err': e})})
call s:wait_has_key(l, 'err')
Assert Equals(p._state, REJECTED)
Assert KeyNotExists(l, 'on_finally')
Assert HasKey(err, 'throwpoint')
Assert Equals(stridx(err.exception, 'Vim(call):E119:'), 0, err.exception)
End
It should return rejected promise when an exception is thrown in its callback
let l = l:
let p = P.resolve(42).finally({-> execute('throw "Exception in onFinally"')})
call p.catch({e -> extend(l, {'err': e})})
call s:wait_has_key(l, 'err')
Assert Equals(p._state, REJECTED)
Assert HasKey(err, 'throwpoint')
Assert Equals(err.exception, 'Exception in onFinally')
End
End
End
Describe .all()
It should wait all and resolve with all the resolved values as array
let l = l:
let p1 = Wait(10).then({-> 10})
let p2 = Wait(200).then({-> 20})
let p3 = Wait(100).then({-> extend(l, {'ongoing' : v:true})}).then({-> 30})
let result = []
let p4 = P.all([p1, p2, p3]).then({a -> extend(l, {'result' : a, 'done' : v:true})})
call s:wait_has_key(l, 'ongoing')
Assert Equals(result, [])
Assert Equals(p4._state, PENDING)
call s:wait_has_key(l, 'done')
Assert Equals(len(result), 3)
Assert Equals(result[0], 10)
Assert Equals(result[1], 20)
Assert Equals(result[2], 30)
Assert Equals(p4._state, FULFILLED)
End
It should reject Promise immediately when one of children was rejected
let l = l:
let p1 = Wait(10).then({ -> execute('throw 1') })
let p2 = Wait(200)
let p3 = P.all([p1, p2]).catch({r -> extend(l, {'reason' : r})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason.exception, 1)
Assert Equals(p3._state, FULFILLED)
Assert Equals(p2._state, PENDING)
End
It should create a pending Promise when given array is empty
let l = l:
let p = P.all([]).then({-> extend(l, {'done' : 1})})
call s:wait_has_key(l, 'done')
Assert Equals(p._state, FULFILLED)
Assert Equals(done, 1)
End
It should work where filfilled and pending Promises are mixed
let l = l:
let p1 = P.resolve('a')
let p2 = Wait(30).then({-> 'b'})
let p3 = Wait(10).then({-> 'c'})
let p = P.all([p1, p2, p3])
Assert Equals(p._state, PENDING)
call p.then({a -> extend(l, {'result' : a})})
call s:wait_has_key(l, 'result')
Assert Equals(len(result), 3)
Assert Equals(result[0], 'a')
Assert Equals(result[1], 'b')
Assert Equals(result[2], 'c')
End
End
Describe .race()
It should make a promise resolving after first of children resolved
let l = l:
let p1 = Wait(10).then({-> 42})
let p2 = Wait(200).then({-> 21})
let p4 = P.race([p1, p2]).then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
Assert Equals(p4._state, FULFILLED)
Assert Equals(p2._state, PENDING)
End
It should reject promise immediately when first child was rejected
let l = l:
let p1 = Wait(10).then({ -> execute('throw 1') })
let p2 = Wait(200)
let p3 = P.race([p1, p2]).catch({r -> extend(l, {'reason' : r})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason.exception, 1)
Assert Equals(p1._state, REJECTED)
Assert Equals(p2._state, PENDING)
Assert Equals(p3._state, FULFILLED)
End
It should resolve promise even if succeeding promise is rejected
let l = l:
let p1 = Wait(10).then({-> 42})
let p2 = RejectAfter(200)
let p3 = P.race([p1, p2]).then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
Assert Equals(p3._state, FULFILLED)
Assert Equals(p2._state, PENDING)
End
It should create a pending Promise when given array is empty
let p = P.race([])
Assert Equals(p._state, PENDING)
End
It should work where filfilled and pending Promises are mixed
let p1 = Wait(10).then({-> 'a'})
let p2 = P.resolve('b')
let p3 = Wait(50).then({-> 'c'})
let p = P.race([p1, p2, p3])
let l = l:
call p.then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(p._state, FULFILLED)
Assert Equals(result, 'b')
End
End
Describe .resolve()
It should create resolved Promise with given non-Promise value
let l = l:
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty'), v:null, v:true]
let p = P.resolve(Val)
Assert Equals(p._state, FULFILLED)
call p.then({x -> extend(l, {'Result' : x})}).catch({x -> extend(l, {'Result' : x})})
call s:wait_has_key(l, 'Result')
Assert Equals(l:Result, Val)
unlet l:Result
unlet l:Val
endfor
End
It should create resolved Promise with given Promise value
for p in [
\ P.resolve(P.resolve(42)),
\ P.resolve(P.resolve(P.resolve(P.resolve(42)))),
\ P.resolve(Wait(10).then({-> 42}))
\ ]
let l = l:
call p.then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(p._state, FULFILLED)
Assert Equals(result, 42)
unlet result
endfor
End
It should create rejected Promise with rejected Promise value
let p = P.resolve(P.reject(42))
Assert Equals(p._state, REJECTED)
let l = l:
call p.catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(reason, 42)
End
It should create pending Promise with pending Promise
let p = P.resolve(P.new({-> 42}))
Assert Equals(p._state, PENDING)
End
It can omit parameter
let l = l:
call P.resolve().then({x -> extend(l, {'result': x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, v:null)
End
It should wait for given pending Promise being resolved
let l = l:
let p = P.resolve(Wait(30).then({-> 42}))
Assert Equals(p._state, PENDING)
call p.then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
End
It should wait for given pending Promise being rejected
let l = l:
let p = P.resolve(Wait(30).then({-> execute('throw "error"')}))
Assert Equals(p._state, PENDING)
call p.catch({x -> extend(l, {'reason' : x})})
call s:wait_has_key(l, 'reason')
Assert Equals(p._state, REJECTED)
Assert Equals(reason.exception, 'error')
End
End
Describe .reject()
It should create rejected Promise with non-Promise value
let l = l:
for l:Val in [42, 'foo', {'foo': 42}, {}, [1, 2, 3], [], function('empty'), v:null, v:true]
let p = P.reject(Val)
Assert Equals(p._state, REJECTED)
call p.then({-> extend(l, {'Result' : 'Error: resolve to .then()'})}).catch({x -> extend(l, {'Result' : x})})
call s:wait_has_key(l, 'Result')
Assert Equals(Result, Val)
unlet l:Result
unlet l:Val
endfor
End
It should create rejected Promise with rejected Promise
for p in [
\ P.reject(P.reject(42)),
\ P.reject(P.reject(P.reject(P.reject(42)))),
\ P.reject(Wait(10).then({-> P.reject(42)})),
\ P.reject(Wait(10).then({-> execute('throw 42')})),
\ ]
Assert Equals(p._state, REJECTED)
endfor
End
It should create rejected Promise with pending Promise
let p = P.reject(P.new({-> 42}))
Assert Equals(p._state, REJECTED)
End
It should create rejected Promise with resolved Promise
let l = l:
let p = P.reject(P.resolve(42))
Assert Equals(p._state, REJECTED)
call p.catch({x -> x}).then({x -> extend(l, {'result' : x})})
call s:wait_has_key(l, 'result')
Assert Equals(result, 42)
End
It can omit parameter
let l = l:
call P.reject().catch({x -> extend(l, {'reason': x})})
call s:wait_has_key(l, 'reason')
Assert True(reason == v:null, 'Actual: ' . string(reason))
End
End
Describe .is_available()
It should return true on Vim8 or Neovim
Assert True(P.is_available())
End
End
Describe .is_promise()
It should return a given value is Promise instance or not
Assert True(P.is_promise(P.resolve(42)))
Assert False(P.is_promise({}))
Assert False(P.is_promise(v:null))
Assert False(P.is_promise(42))
End
End
Describe .wait()
It waits until a given promise has resolved and returns a result
let p = Wait(30).then({ -> 'resolved' })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p), ['resolved', v:null])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 30)
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 1000)
End
It throws an exception when a given promise has rejected
let p = Wait(30).then({ -> P.reject('rejected') })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p), [v:null, 'rejected'])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 30)
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 1000)
let p = Wait(30).then({ -> P.reject({ 'exception': 'rejected' }) })
Assert Equals(P.wait(p), [v:null, { 'exception': 'rejected' }])
let p = Wait(30).then({ -> P.reject(['foo', 'bar']) })
Assert Equals(P.wait(p), [v:null, ['foo', 'bar']])
End
It waits until a given timeout and returns Async.Promise.TimeoutError
let p = Wait(1000).then({ -> 'resolved' })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p, { 'timeout': 30 }), [v:null, P.TimeoutError])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 30)
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 1000)
End
It waits until a given timeout and returns Async.Promise.TimeoutError (type 2)
let p = Wait(1000).then({ -> 'resolved' })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p, 30), [v:null, P.TimeoutError])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 30)
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 1000)
End
It waits at least the interval milliseconds (interval > epoch)
let p = Wait(200).then({ -> 'resolved' })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p, { 'interval': 1000 }), ['resolved', v:null])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 1000)
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 2000)
let p = Wait(200).then({ -> P.reject('rejected') })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p, { 'interval': 1000 }), [v:null, 'rejected'])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 1000)
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 2000)
End
It waits at least the interval milliseconds (interval < epoch)
let p = Wait(1000).then({ -> 'resolved' })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p, { 'interval': 200 }), ['resolved', v:null])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 1000)
if has('mac')
" TODO: I know this is a terrible IDEA, but this assert makes osx test fails.
" Let's disable until we figure out why and how.
else
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 1200)
endif
let p = Wait(1000).then({ -> P.reject('rejected') })
let s = reltime()
Assert Equals(p._state, PENDING)
Assert Equals(P.wait(p, { 'interval': 200 }), [v:null, 'rejected'])
Assert Compare(reltimefloat(reltime(s)) * 1000, '>=', 1000)
if has('mac')
" TODO: I know this is a terrible IDEA, but this assert makes osx test fails.
" Let's disable until we figure out why and how.
else
Assert Compare(reltimefloat(reltime(s)) * 1000, '<=', 1200)
endif
End
End
End
" vim:et ts=2 sts=2 sw=2 tw=0: