// ========================================================================== // Project: SproutCore
- JavaScript Application Framework // Copyright: ©2006-2011 Apple Inc. and contributors. // License: Licensed under MIT license (see license.js) // ==========================================================================
/*global module test equals context ok same notest */
var source, indexes, observer, obj ; // base array to work with module(“SC.RangeObserver#update”, {
setup: function() { // create array with 5 SC.Object's in them source = [1,2,3,4,5].map(function(x) { return SC.Object.create({ item: x, foo: "bar" }) ; }, this); indexes = SC.IndexSet.create(2,2); // select 2..3 observer = SC.Object.create({ callCount: 0, rangeDidChange: function() { this.callCount++; } }); obj = SC.RangeObserver.create(source, indexes, observer, observer.rangeDidChange, "context", YES); }
});
test(“returns receiver”, function() {
ok(obj === obj.update(source, SC.IndexSet.create()), 'should return receiver');
});
test(“switches to observing new range - no previous updated”, function() {
obj.update(source, SC.IndexSet.create(0)); observer.callCount = 0 ; var len = source.length, idx; for(idx=0;idx<len;idx++) source[idx].set('foo', 'baz'); // since new index set length is different use this as a proxy to verify // that range changed equals(observer.callCount, 1, 'range observer should fire on new range');
});
test(“switches to observing new range - previously updated”, function() {
var len = source.length, idx; for(idx=0;idx<len;idx++) source[idx].set('foo', 'baz'); observer.callCount = 0 ; obj.update(source, SC.IndexSet.create(0)); observer.callCount = 0 ; for(idx=0;idx<len;idx++) source[idx].set('foo', 'bar'); // since new index set length is different use this as a proxy to verify // that range changed equals(observer.callCount, 1, 'range observer should fire on new range');
});