add test 'when internet connection value changes'

npm/ng-packs/packages/core/src/lib/services/internet-connection-service.ts

@@ -17,13 +17,13 @@ export class InternetConnectionService{
   networkStatus = computed(() => this.status())
   
   constructor(){
-    this.window.addEventListener('offline', () => this.setStatus());
-    this.window.addEventListener('online', () => this.setStatus());
+    this.window.addEventListener('offline', () => this.setStatus(false));
+    this.window.addEventListener('online', () => this.setStatus(true));
   }
 
-  private setStatus(){
-    this.status.set(navigator.onLine)
-    this.status$.next(navigator.onLine)
+  setStatus(val:boolean){
+    this.status.set(val)
+    this.status$.next(val)
   }
 
   get networkStatus$(){

npm/ng-packs/packages/core/src/lib/tests/internet-connection.service.spec.ts

@@ -2,7 +2,8 @@ import { TestBed} from '@angular/core/testing';
 import { DOCUMENT } from '@angular/common';
 
 import { InternetConnectionService } from '../services/internet-connection-service';
-import { first, takeLast } from 'rxjs';
+import { BehaviorSubject, first, of, takeLast } from 'rxjs';
+import { computed, signal } from '@angular/core';
 
 let service: InternetConnectionService;
 
@@ -54,4 +55,42 @@ describe('Internet connection when connected', () => {
       done();
     });
   });
+});
+
+describe('when connection value changes', () => {
+  let mockDocument = { defaultView: {navigator: {onLine: true}, addEventListener: (eventName,cb)=>{
+    window.addEventListener(eventName,cb)
+  }, dispatchEvent: function(event){
+    this.navigator.onLine = !this.navigator.onLine
+  }}}
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers:[{provide:DOCUMENT, useValue: mockDocument}]
+    })
+    service = TestBed.inject(InternetConnectionService);
+  });
+  
+  it('check is signal value changes', () => {
+    expect(service.networkStatus()).toEqual(true);
+    const event = new Event("offline");
+    service.window.dispatchEvent(event)
+    service.setStatus(service.window.navigator.onLine)
+    expect(service.networkStatus()).toEqual(false);
+  });
+
+  it('check is observable value changes',(done: any) => {
+    const event = new Event("online");
+    service.window.dispatchEvent(event)
+    service.networkStatus$.pipe(first()).subscribe(value => {
+      expect(value).toEqual(true)
+      done()
+    });
+    service.window.dispatchEvent(event)
+    service.setStatus(service.window.navigator.onLine)
+    service.networkStatus$.pipe().subscribe(value => {
+      expect(value).toEqual(false)
+      done()
+    });
+  });
 });