1
做对象文字块吗?我正在尝试将其他函数的结果存储在我的分页助手类中,并且由于未返回回调,因此我的Mocha测试因超时而失败。如果我从我的所有变量(即local.count
到count
)中删除local
,并删除持有该回调的.then
,并将它放在第一个.then
中,它突然生效。在node.js中做对象文字块吗
render: (model, query, cb) =>
self = @
count = 0
local = {}
count_promise = @query_count model, query
count_promise.then (c) ->
local.count = c
local.pages = self.pages(count)
local.prev_class = self.prev_class(pages)
local.next_class = self.next_class(pages)
local.prev_page = self.prev_page(pages)
local.next_page = self.next_page(pages)
.then ->
cb({num_pages: local.pages, current_page: self.page, prev_class: local.prev_class, next_class: local.next_class, prev_page: local.prev_page, next_page: local.next_page, results: {}})
.fail (err) ->
throw new Error(err)
return
编辑
我加的console.log回调之前,是否有任何露面。
.then ->
console.log local
cb({num_pages: local.pages, current_page: self.page, prev_class: local.prev_class, next_class: local.next_class, prev_page: local.prev_page, next_page: local.next_page, results: {}})
什么也没有出现。
使用兴农和柴此特定方法的摩卡测试代码断言:
describe 'PaginationHelper', ->
describe 'Pagination Helper Initializes', ->
it 'accepts page', ->
assert.ok(new PaginationHelper(2))
describe 'method testing', ->
describe 'render method', ->
ph = new PaginationHelper(2)
result = {}
before (done) ->
ph.render BlogModel, {}, (res) ->
result = res
done()
it 'returns object', ->
assert.isObject(result)
it 'returns object with num_pages', ->
assert.property(result, "num_pages")
it 'returns object with current_page', ->
assert.property(result, 'current_page')
it 'returns object with prev_class', ->
assert.property(result, 'prev_class')
it 'returns object with next_class', ->
assert.property(result, 'next_class')
describe 'render output testing', ->
result = undefined
before (done) ->
ph = new PaginationHelper(1)
ph.render BlogModel, {}, (res) ->
result = res
done()
it 'returns a number for num_pages', ->
assert.isNumber(result.num_pages)
it 'returns a number for current_page', ->
assert.isNumber(result.current_page)
it 'returns string for prev_class', ->
assert.isString(result.prev_class)
it 'returns string for next_class', ->
assert.isString(result.next_class)
该测试的结果输出:
Error: Command failed: ✖ 1 of 35 tests failed:
1) PaginationHelper method testing render method "before all" hook:
Error: timeout of 2000ms exceeded
你有例外访问不定值财产,并永远不会执行回调函数时,因此摩卡超时 –
感谢您的答复。我认为地方可以保留从第一个到第二个的价值,然后我将插入更多的承诺函数。为什么高级作用域中的“本地”对象字面值不像正常的函数变量那样异步工作? – BioDevMike
我以前的回答可能是错的。你能发布最小自包含的例子吗?我怀疑你的第二个'then'没有被调用(你可以在'cb'之前放置'console.log'吗? –