describe('uiScroll', function() {

'use strict';

beforeEach(module('ui.scroll'));

beforeEach(module('ui.scroll.test.datasources'));

describe('basic setup', function() {

it('should throw an error if the template\'s wrong', function() {

runTest({ datasource: 'myEmptyDatasource', extra: 'ng-if="false"' }, null, {

catch: function(error) {

expect(error.message).toBe('ui-scroll directive requires an Element node for templating the view');

}

}

);

});

var scrollSettings = { datasource: 'myEmptyDatasource' };

it('should bind to window scroll and resize events and unbind them after the scope is destroyed', function() {

spyOn($.fn, 'on').and.callThrough();

spyOn($.fn, 'off').and.callThrough();

runTest(scrollSettings,

function(viewport) {

expect($.fn.on.calls.all().length).toBe(4);

expect($.fn.on.calls.all()[0].args[0]).toBe('visibilitychange');

expect($.fn.on.calls.all()[1].args[0]).toBe('mousewheel');

expect($.fn.on.calls.all()[1].object[0]).toBe(viewport[0]);

expect($.fn.on.calls.all()[2].args[0]).toBe('resize');

expect($.fn.on.calls.all()[2].object[0]).toBe(viewport[0]);

expect($.fn.on.calls.all()[3].args[0]).toBe('scroll');

expect($.fn.on.calls.all()[3].object[0]).toBe(viewport[0]);

}, {

cleanupTest: function(viewport, scope, $timeout) {

$timeout(function() {

expect($.fn.off.calls.all().length).toBe(4);

expect($.fn.off.calls.all()[0].args[0]).toBe('visibilitychange');

expect($.fn.off.calls.all()[1].args[0]).toBe('resize');

expect($.fn.off.calls.all()[1].object[0]).toBe(viewport[0]);

expect($.fn.off.calls.all()[2].args[0]).toBe('scroll');

expect($.fn.off.calls.all()[2].object[0]).toBe(viewport[0]);

expect($.fn.off.calls.all()[3].args[0]).toBe('mousewheel');

expect($.fn.off.calls.all()[3].object[0]).toBe(viewport[0]);

});

}

}

);

});

it('should create 2 divs of 0 height', function() {

runTest(scrollSettings,

function(viewport) {

expect(viewport.children().length).toBe(2);

var topPadding = viewport.children()[0];

expect(topPadding.tagName.toLowerCase()).toBe('div');

expect(Helper.getTopPadding(viewport)).toBe(0);

var bottomPadding = viewport.children()[1];

expect(bottomPadding.tagName.toLowerCase()).toBe('div');

expect(Helper.getBottomPadding(viewport)).toBe(0);

}

);

});

it('should call get on the datasource 2 times ', function() {

var spy;

inject(function(myEmptyDatasource) {

spy = spyOn(myEmptyDatasource, 'get').and.callThrough();

});

runTest(scrollSettings,

function() {

expect(spy.calls.all().length).toBe(2);

expect(spy.calls.all()[0].args.length).toBe(3);

expect(spy.calls.all()[0].args[0]).toBe(1);

expect(spy.calls.all()[0].args[1]).toBe(10);

expect(spy.calls.all()[1].args.length).toBe(3);

expect(spy.calls.all()[1].args[0]).toBe(-9);

expect(spy.calls.all()[1].args[1]).toBe(10);

}

);

});

});

describe('basic setup (new datasource get signature)', function() {

var scrollSettings = { datasource: 'myDescriptoEmptyDatasource' };

it('should call get on the datasource 2 times ', function() {

var spy;

inject(function(myDescriptoEmptyDatasource) {

spy = spyOn(myDescriptoEmptyDatasource, 'get').and.callThrough();

});

runTest(scrollSettings,

function() {

expect(spy.calls.all().length).toBe(2);

expect(spy.calls.all()[0].args.length).toBe(2);

expect(spy.calls.all()[0].args[0].index).toBe(1);

expect(spy.calls.all()[0].args[0].count).toBe(10);

expect('append' in spy.calls.all()[0].args[0]).toBe(true);

expect(spy.calls.all()[0].args[0].append).toBeUndefined();

expect('prepend' in spy.calls.all()[0].args[0]).toBe(false);

expect(spy.calls.all()[1].args.length).toBe(2);

expect(spy.calls.all()[1].args[0].index).toBe(-9);

expect(spy.calls.all()[1].args[0].count).toBe(10);

expect('append' in spy.calls.all()[1].args[0]).toBe(false);

expect('prepend' in spy.calls.all()[1].args[0]).toBe(true);

expect(spy.calls.all()[1].args[0].prepend).toBeUndefined();

}

);

});

});

});