tests(localization): Fix tests related to localization integration.

Author: skrustev

projects/igniteui-angular/src/lib/calendar/calendar.component.spec.ts

@@ -619,7 +619,7 @@ describe("IgxCalendar - ", () => {
 
                     calendarRowsMar.forEach((row, idx) => {
                         const firstRowItem = row.nativeElement.children[0];
-                        if (idx === 4) {
+                        if (idx === 5) {
                             expect(firstRowItem.firstChild.innerText).toEqual(
                                 "12",
                             );

projects/igniteui-angular/src/lib/core/i18n/resources.spec.ts

@@ -95,6 +95,8 @@ describe('i18n', () => {
             expect(igxGetCurrentResourceStrings(ActionStripResourceStringsEN, false)).toEqual({
                 igx_action_strip_button_more_title: 'Още'
             });
+
+            setCurrentI18n('en-US');
         })
 
         it('should return default strings if locale is changed using new API, but its missing resources', () => {
@@ -108,6 +110,8 @@ describe('i18n', () => {
             expect(igxGetCurrentResourceStrings(ActionStripResourceStringsEN, false)).toEqual({
                 igx_action_strip_button_more_title: 'More'
             });
+
+            setCurrentI18n('en-US');
         });
 
         it('should return default strings if locale is changed using new API, but its missing resources for this particular component', () => {
@@ -122,6 +126,8 @@ describe('i18n', () => {
             expect(igxGetCurrentResourceStrings(ActionStripResourceStringsEN, false)).toEqual({
                 igx_action_strip_button_more_title: 'More'
             });
+
+            setCurrentI18n('en-US');
         });
     });
 });

projects/igniteui-angular/src/lib/core/utils.ts

@@ -13,7 +13,7 @@ import { NEVER, Observable, Subject } from 'rxjs';
 import { setImmediate } from './setImmediate';
 import { isDevMode } from '@angular/core';
 import type { IgxTheme } from '../services/theme/theme.token';
-import { getDateFormatter, getI18nManager, getNumberFormatter, IntlDateTimeStyleValues, IResourceChangeEventArgs } from 'igniteui-i18n-core';
+import { getDateFormatter, getI18nManager, getNumberFormatter, IResourceChangeEventArgs } from 'igniteui-i18n-core';
 
 /** @hidden @internal */
 export const ELEMENTS_TOKEN = /*@__PURE__*/new InjectionToken<boolean>('elements environment');
@@ -631,6 +631,13 @@ export function onResourceChangeHandle(destroyObj: Subject<any> | DestroyRef, ca
     }
 }
 
+const IntlDateTimeStyleValues = {
+    full: 'Full',
+    long: 'Long',
+    medium: 'Medium',
+    short: 'Short'
+};
+
 /**
  * Returns the date format based on a provided locale.
  * Supports Angular's DatePipe format options: `short`, `medium`, `long`, `full`, `shortDate`, `mediumDate`, `longDate` and `fullDate`.