return this.use('[data-watch]', function(el, data) {
var path = el.attributes['data-watch'].value
data.watch = watch(this, path, function(current, previous) {
if (data.exec) data.exec(el, data, current, previous)
})
return data
})
it('can take a custom poll interval', function(done) {
var count = 0
var start = Date.now()
var slowWatch = Watch(100)
slowWatch(user, 'queriedAgo()', function(property) {
if (count++ == 0) return start = Date.now() // skip first call
if (Date.now() - start < slowWatch.interval) throw new Error('polled too quickly: ' + (Date.now() - start) + ' < ' + slowWatch.interval)
start = Date.now()
if (count++ > 5) done()
})
})
it('can unwatch custom check intervals', function(done) {
var called = false
user.doError = function() {
// will call once.
if (!called) return called = true
throw new Error('should not fire')
}
var slowWatch = Watch(100)
slowWatch(user, 'doError()', function(property) {
throw new Error('callback should not fire')
})
slowWatch.unwatch(user, 'doError()')
setTimeout(function() { done() }, slowWatch.interval * 2)
})
"use strict"
if (typeof window === "undefined") {
var Watch = require('../')
var assert = require('assert')
} else {
var Watch = require('simple-watch')
var assert = require('timoxley-assert')
}
var watch = Watch()
var user
beforeEach(function() {
user = {
name: 'Tim',
age: 27
}
})
afterEach(function() {
watch.unwatch()
})
var shouldNotCall = function() {
throw new Error('Should not fire')
}
describe('error conditions', function() {
it('throws when given no arguments', function() {
assert.throws(function() {