Fix input week test

The test previously passed without this patch, which is bad.

Author: Narretz

test/ng/directive/inputSpec.js

@@ -1093,16 +1093,18 @@ describe('input', function() {
 
       it('should validate when timezone is provided.', function() {
         inputElm = helper.compileInput('<input type="week" ng-model="value" name="alias" ' +
-            'max="{{ maxVal }}" ng-model-options="{timezone: \'UTC\', allowInvalid: true}"/>');
-        $rootScope.maxVal = '2013-W01';
-        $rootScope.value = new Date(Date.UTC(2013, 0, 1, 0, 0, 0));
+            'max="{{ maxVal }}" ng-model-options="{timezone: \'-2400\', allowInvalid: true}"/>');
+        // The calendar week comparison date is January 17. Setting the timezone to -2400
+        // makes the January 18 date value valid.
+        $rootScope.maxVal = '2013-W03';
+        $rootScope.value = new Date(Date.UTC(2013, 0, 18));
         $rootScope.$digest();
 
         expect($rootScope.form.alias.$error.max).toBeFalsy();
         expect($rootScope.form.alias.$valid).toBeTruthy();
 
         $rootScope.value = '';
-        helper.changeInputValueTo('2013-W01');
+        helper.changeInputValueTo('2013-W03');
         expect(inputElm).toBeValid();
         expect($rootScope.form.alias.$error.max).toBeFalsy();
         expect($rootScope.form.alias.$valid).toBeTruthy();