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File Content

// http://stackoverflow.com/questions/26659042/unit-testing-a-directive-with-parsers-and-formatters
define(['angular', 'RequiredNonZeroValue'], function() {
'use strict';
describe('Required Non-Zero Value Directive', function () {
var scope,
element,
select;

beforeEach(function () {
module('angularTemplateApp');

inject(function($rootScope, $compile) {
scope = $rootScope.$new();
//Must be an object to make use of prototypical inheritence for outside-of-isolate-scope access
scope.models = {};
scope.lastSeenMenu = [
{value: 200, days: "200"},
{value: 100, days: "100"}
];

element = angular.element('<form name="directiveTestForm">' +
'<select required required-non-zero-value name="total" ng-model="models.total" ng-options="lastSeen.value as lastSeen.days for lastSeen in lastSeenMenu">' +
'<option value="">Select</option>' +
'</select>' +
'</form>');

$compile(element)(scope);
scope.$digest();

select = element.find('select');
});
});

describe('the parser', function () {
it('should parse strings to ints and set non-zeros as valid', function () {
select.find('option:last-of-type').prop('selected', true);
select.trigger('change');
expect(scope.models.total).toBe(100);
expect(scope.directiveTestForm.total.$valid).toBe(true);
});

// tested in automated test, unable to trigger change to empty string
// -- it 'should parse empty strings to zero values and set as invalid'
});

describe('the formatter', function () {
it('should leave non-zero values as-is', function () {
scope.models.total = 200;
scope.$digest();
expect(select.find('option:selected').text()).toBe('200');
});

it('should format 0 as null, selecting the default option', function () {
scope.models.total = 0;
scope.$digest();
expect(select.find('option:selected').text()).toBe('Select');
});
});
});
});