diff --git a/npm/ng-packs/packages/core/src/lib/tests/environment.service.spec.ts b/npm/ng-packs/packages/core/src/lib/tests/environment.service.spec.ts
new file mode 100644
index 0000000000..fe9f50a546
--- /dev/null
+++ b/npm/ng-packs/packages/core/src/lib/tests/environment.service.spec.ts
@@ -0,0 +1,72 @@
+import { createServiceFactory, SpectatorService } from '@ngneat/spectator/jest';
+import { Environment } from '../models';
+import { EnvironmentService } from '../services';
+
+export const ENVIRONMENT_DATA = ({
+  production: false,
+  application: {
+    name: 'MyProjectName',
+  },
+  oAuthConfig: {
+    issuer: 'https://localhost:44305',
+  },
+  apis: {
+    default: {
+      url: 'https://localhost:44305',
+    },
+    other: {
+      url: 'https://localhost:44306',
+    },
+  },
+  localization: {
+    defaultResourceName: 'MyProjectName',
+  },
+} as any) as Environment;
+
+describe('ConfigState', () => {
+  let spectator: SpectatorService<EnvironmentService>;
+  let environment: EnvironmentService;
+
+  const createService = createServiceFactory({
+    service: EnvironmentService,
+  });
+
+  beforeEach(() => {
+    spectator = createService();
+    environment = spectator.service;
+
+    environment.setState(ENVIRONMENT_DATA);
+  });
+
+  describe('#getEnvironment', () => {
+    it('should return ENVIRONMENT_DATA', () => {
+      expect(environment.getEnvironment()).toEqual(ENVIRONMENT_DATA);
+      environment.getEnvironment$().subscribe(data => expect(data).toEqual(ENVIRONMENT_DATA));
+    });
+  });
+
+  describe('#getApiUrl', () => {
+    it('should return api url', () => {
+      expect(environment.getApiUrl()).toEqual(ENVIRONMENT_DATA.apis.default.url);
+      environment
+        .getApiUrl$('other')
+        .subscribe(data => expect(data).toEqual(ENVIRONMENT_DATA.apis.other.url));
+    });
+  });
+
+  // TODO: create permission.service.spec.ts
+  // describe('#getGrantedPolicy', () => {
+  //   it('should return a granted policy', () => {
+  //     expect(ConfigState.getGrantedPolicy('Abp.Identity')(CONFIG_STATE_DATA)).toBe(false);
+  //     expect(ConfigState.getGrantedPolicy('Abp.Identity || Abp.Account')(CONFIG_STATE_DATA)).toBe(
+  //       true,
+  //     );
+  //     expect(ConfigState.getGrantedPolicy('Abp.Account && Abp.Identity')(CONFIG_STATE_DATA)).toBe(
+  //       false,
+  //     );
+  //     expect(ConfigState.getGrantedPolicy('Abp.Account &&')(CONFIG_STATE_DATA)).toBe(false);
+  //     expect(ConfigState.getGrantedPolicy('|| Abp.Account')(CONFIG_STATE_DATA)).toBe(false);
+  //     expect(ConfigState.getGrantedPolicy('')(CONFIG_STATE_DATA)).toBe(true);
+  //   });
+  // });
+});