mirror of https://github.com/vitalif/phantomjs
49 lines
2.1 KiB
CoffeeScript
49 lines
2.1 KiB
CoffeeScript
##
|
|
# Wait until the test condition is true or a timeout occurs. Useful for waiting
|
|
# on a server response or for a ui change (fadeIn, etc.) to occur.
|
|
#
|
|
# @param testFx javascript condition that evaluates to a boolean,
|
|
# it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
|
|
# as a callback function.
|
|
# @param onReady what to do when testFx condition is fulfilled,
|
|
# it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
|
|
# as a callback function.
|
|
# @param timeOutMillis the max amount of time to wait. If not specified, 3 sec is used.
|
|
##
|
|
waitFor = (testFx, onReady, timeOutMillis=3000) ->
|
|
start = new Date().getTime()
|
|
condition = false
|
|
f = ->
|
|
if (new Date().getTime() - start < timeOutMillis) and not condition
|
|
# If not time-out yet and condition not yet fulfilled
|
|
condition = (if typeof testFx is 'string' then eval testFx else testFx()) #< defensive code
|
|
else
|
|
if not condition
|
|
# If condition still not fulfilled (timeout but condition is 'false')
|
|
console.log "'waitFor()' timeout"
|
|
phantom.exit(1)
|
|
else
|
|
# Condition fulfilled (timeout and/or condition is 'true')
|
|
console.log "'waitFor()' finished in #{new Date().getTime() - start}ms."
|
|
if typeof onReady is 'string' then eval onReady else onReady() #< Do what it's supposed to do once the condition is fulfilled
|
|
clearInterval interval #< Stop this interval
|
|
interval = setInterval f, 250 #< repeat check every 250ms
|
|
|
|
|
|
page = new WebPage()
|
|
|
|
# Open Twitter on 'sencha' profile and, onPageLoad, do...
|
|
page.open 'http://twitter.com/#!/sencha', (status) ->
|
|
# Check for page load success
|
|
if status isnt 'success'
|
|
console.log 'Unable to access network'
|
|
else
|
|
# Wait for 'signin-dropdown' to be visible
|
|
waitFor ->
|
|
# Check in the page if a specific element is now visible
|
|
page.evaluate ->
|
|
$('#signin-dropdown').is ':visible'
|
|
, ->
|
|
console.log 'The sign-in dialog should be visible now.'
|
|
phantom.exit()
|