fix(angular): unify preact signals instance and make tests headless

renderers/angular/a2ui_explorer/src/app/agent-stub.service.spec.ts

@@ -20,7 +20,6 @@ import { A2uiRendererService } from '@a2ui/angular/v0_9';
 import { ActionDispatcher } from './action-dispatcher.service';
 import { Subject } from 'rxjs';
 import { A2uiMessage } from '@a2ui/web_core/v0_9';
-import { vi, describe, it, expect, beforeEach } from 'vitest';
 
 describe('AgentStubService', () => {
   let service: AgentStubService;
@@ -30,10 +29,10 @@ describe('AgentStubService', () => {
 
   beforeEach(() => {
     mockSurfaceGroup = {
-      getSurface: vi.fn(),
+      getSurface: jasmine.createSpy('getSurface'),
     };
     mockRendererService = {
-      processMessages: vi.fn(),
+      processMessages: jasmine.createSpy('processMessages'),
       get surfaceGroup() {
         return mockSurfaceGroup;
       },
@@ -69,28 +68,28 @@ describe('AgentStubService', () => {
       const messages = [createMsg];
 
       // 1. First call: Surface does not exist
-      mockSurfaceGroup.getSurface.mockReturnValue(undefined);
+      mockSurfaceGroup.getSurface.and.returnValue(undefined);
       service.initializeDemo(messages);
 
       // Should have called processMessages with initial messages only
       expect(mockRendererService.processMessages).toHaveBeenCalledWith(messages);
       expect(mockRendererService.processMessages).toHaveBeenCalledTimes(1);
-      mockRendererService.processMessages.mockClear();
+      mockRendererService.processMessages.calls.reset();
 
       // 2. Second call: Surface now exists
-      mockSurfaceGroup.getSurface.mockReturnValue({ id: surfaceId });
+      mockSurfaceGroup.getSurface.and.returnValue({ id: surfaceId });
       service.initializeDemo(messages);
 
       // Should have called processMessages twice:
       // First with deleteSurface, then with initial messages
       expect(mockRendererService.processMessages).toHaveBeenCalledTimes(2);
-      expect(mockRendererService.processMessages).toHaveBeenNthCalledWith(1, [
+      expect(mockRendererService.processMessages.calls.argsFor(0)[0]).toEqual([
         {
           version: 'v0.9',
           deleteSurface: { surfaceId },
         },
       ]);
-      expect(mockRendererService.processMessages).toHaveBeenNthCalledWith(2, messages);
+      expect(mockRendererService.processMessages.calls.argsFor(1)[0]).toEqual(messages);
     });
 
     it('should NOT send deleteSurface if surface does not exist', () => {
@@ -104,7 +103,7 @@ describe('AgentStubService', () => {
       };
       const messages = [createMsg];
 
-      mockSurfaceGroup.getSurface.mockReturnValue(undefined);
+      mockSurfaceGroup.getSurface.and.returnValue(undefined);
       service.initializeDemo(messages);
 
       expect(mockRendererService.processMessages).toHaveBeenCalledTimes(1);

renderers/angular/package.json

@@ -6,7 +6,7 @@
     "generate-examples": "node scripts/generate-examples.mjs",
     "build": "npm run generate-examples && ng build && node postprocess-build.mjs",
     "demo": "npm run generate-examples && ng serve a2ui_explorer",
-    "test": "npm run generate-examples && ng test",
+    "test": "npm run generate-examples && ng test --browsers=ChromeHeadless",
     "test:ci": "npm run generate-examples && ng test --watch=false --browsers=ChromeHeadless"
   },
   "dependencies": {

renderers/angular/src/v0_9/core/utils.spec.ts

@@ -15,8 +15,8 @@
  */
 
 import { DestroyRef } from '@angular/core';
-import { signal as preactSignal } from '@preact/signals-core';
 import { toAngularSignal, getNormalizedPath } from './utils';
+import { signal as preactSignal } from '@a2ui/web_core/v0_9';
 
 describe('toAngularSignal', () => {
   let mockDestroyRef: jasmine.SpyObj<DestroyRef>;

renderers/web_core/src/v0_9/index.ts

@@ -36,7 +36,7 @@ export * from './state/surface-group-model.js';
 export * from './state/surface-model.js';
 export * from './errors.js';
 
-export {effect, Signal} from '@preact/signals-core';
+export {effect, Signal, signal} from '@preact/signals-core';
 
 import A2uiMessageSchemaRaw from './schemas/server_to_client.json' with {type: 'json'};