diff --git a/npm/ng-packs/packages/core/src/lib/tests/localization.service.spec.ts b/npm/ng-packs/packages/core/src/lib/tests/localization.service.spec.ts
index 3254ede573..b64093b609 100644
--- a/npm/ng-packs/packages/core/src/lib/tests/localization.service.spec.ts
+++ b/npm/ng-packs/packages/core/src/lib/tests/localization.service.spec.ts
@@ -1,25 +1,32 @@
-import { CORE_OPTIONS } from '../tokens/options.token';
+import { Injector } from '@angular/core';
 import { Router } from '@angular/router';
 import { createServiceFactory, SpectatorService, SpyObject } from '@ngneat/spectator/jest';
-import { Actions, Store } from '@ngxs/store';
-import { BehaviorSubject, of, Subject } from 'rxjs';
+import { Store } from '@ngxs/store';
+import { BehaviorSubject, of } from 'rxjs';
+import {
+  ApplicationConfigurationService,
+  ConfigStateService,
+  SessionStateService,
+} from '../services';
 import { LocalizationService } from '../services/localization.service';
-import { SessionStateService } from '../services';
+import { CORE_OPTIONS } from '../tokens/options.token';
+import { CONFIG_STATE_DATA } from './config-state.service.spec';
 
 const shouldReuseRoute = () => true;
 
 describe('LocalizationService', () => {
   let spectator: SpectatorService<LocalizationService>;
-  let store: SpyObject<Store>;
+  let sessionState: SpyObject<SessionStateService>;
+  let configState: SpyObject<ConfigStateService>;
   let router: SpyObject<Router>;
   let service: LocalizationService;
+  let appConfigService: ApplicationConfigurationService;
 
   const createService = createServiceFactory({
     service: LocalizationService,
     entryComponents: [],
-    mocks: [Store, Router],
+    mocks: [ApplicationConfigurationService, Router],
     providers: [
-      { provide: Actions, useValue: new Subject() },
       {
         provide: CORE_OPTIONS,
         useValue: { registerLocaleFn: () => Promise.resolve(), cultureNameLocaleFileMap: {} },
@@ -29,13 +36,16 @@ describe('LocalizationService', () => {
 
   beforeEach(() => {
     spectator = createService();
-    store = spectator.inject(Store);
-    store.dispatch.mockReturnValue(new BehaviorSubject('tr'));
+    sessionState = spectator.inject(SessionStateService);
+    configState = spectator.inject(ConfigStateService);
     router = spectator.inject(Router);
     router.routeReuseStrategy = { shouldReuseRoute } as any;
     service = spectator.service;
+    appConfigService = spectator.inject(ApplicationConfigurationService);
 
-    const sessionState = spectator.inject(SessionStateService);
+    const getConfigurationSpy = jest.spyOn(appConfigService, 'getConfiguration');
+    getConfigurationSpy.mockReturnValue(of(CONFIG_STATE_DATA));
+    configState.setState(CONFIG_STATE_DATA);
     sessionState.setLanguage('tr');
   });
 
@@ -49,20 +59,19 @@ describe('LocalizationService', () => {
   });
 
   describe('#get', () => {
-    it('should be return an observable localization', async () => {
-      store.select.andReturn(of('AbpTest'));
-
-      const localization = await service.get('AbpTest').toPromise();
-
-      expect(localization).toBe('AbpTest');
+    it('should be return an observable localization', done => {
+      service.get('AbpIdentity::Identity').subscribe(localization => {
+        expect(localization).toBe(CONFIG_STATE_DATA.localization.values.AbpIdentity.Identity);
+        done();
+      });
     });
   });
 
   describe('#instant', () => {
     it('should be return a localization', () => {
-      store.selectSnapshot.andReturn('AbpTest');
+      const localization = service.instant('AbpIdentity::Identity');
 
-      expect(service.instant('AbpTest')).toBe('AbpTest');
+      expect(localization).toBe(CONFIG_STATE_DATA.localization.values.AbpIdentity.Identity);
     });
   });
 
@@ -81,7 +90,8 @@ describe('LocalizationService', () => {
     it('should throw an error message when service have an otherInstance', async () => {
       try {
         const instance = new LocalizationService(
-          { getLanguage: () => {} } as any,
+          sessionState,
+          spectator.inject(Injector),
           null,
           null,
           null,
@@ -120,16 +130,16 @@ describe('LocalizationService', () => {
     `(
       'should return observable $expected when resource name is $resource and key is $key',
       async ({ resource, key, defaultValue, expected }) => {
-        store.select.andReturn(
-          of({
+        configState.setState({
+          localization: {
             values: { foo: { bar: 'baz' }, x: { y: 'z' } },
             defaultResourceName: 'x',
-          }),
-        );
-
-        const result = await service.localize(resource, key, defaultValue).toPromise();
+          },
+        });
 
-        expect(result).toBe(expected);
+        service.localize(resource, key, defaultValue).subscribe(result => {
+          expect(result).toBe(expected);
+        });
       },
     );
   });
@@ -161,9 +171,11 @@ describe('LocalizationService', () => {
     `(
       'should return $expected when resource name is $resource and key is $key',
       ({ resource, key, defaultValue, expected }) => {
-        store.selectSnapshot.andReturn({
-          values: { foo: { bar: 'baz' }, x: { y: 'z' } },
-          defaultResourceName: 'x',
+        configState.setState({
+          localization: {
+            values: { foo: { bar: 'baz' }, x: { y: 'z' } },
+            defaultResourceName: 'x',
+          },
         });
 
         const result = service.localizeSync(resource, key, defaultValue);
@@ -205,18 +217,16 @@ describe('LocalizationService', () => {
     `(
       'should return observable $expected when resource names are $resources and keys are $keys',
       async ({ resources, keys, defaultValue, expected }) => {
-        store.select.andReturn(
-          of({
+        configState.setState({
+          localization: {
             values: { foo: { bar: 'baz' }, x: { y: 'z' } },
             defaultResourceName: 'x',
-          }),
-        );
-
-        const result = await service
-          .localizeWithFallback(resources, keys, defaultValue)
-          .toPromise();
+          },
+        });
 
-        expect(result).toBe(expected);
+        service.localizeWithFallback(resources, keys, defaultValue).subscribe(result => {
+          expect(result).toBe(expected);
+        });
       },
     );
   });
@@ -253,9 +263,11 @@ describe('LocalizationService', () => {
     `(
       'should return $expected when resource names are $resources and keys are $keys',
       ({ resources, keys, defaultValue, expected }) => {
-        store.selectSnapshot.andReturn({
-          values: { foo: { bar: 'baz' }, x: { y: 'z' } },
-          defaultResourceName: 'x',
+        configState.setState({
+          localization: {
+            values: { foo: { bar: 'baz' }, x: { y: 'z' } },
+            defaultResourceName: 'x',
+          },
         });
 
         const result = service.localizeWithFallbackSync(resources, keys, defaultValue);
@@ -264,4 +276,12 @@ describe('LocalizationService', () => {
       },
     );
   });
+
+  describe('#getLocalization', () => {
+    it('should return a localization', () => {
+      expect(
+        service.instant("MyProjectName::'{0}' and '{1}' do not match.", 'first', 'second'),
+      ).toBe('first and second do not match.');
+    });
+  });
 });