feat(checkout-page): refactor payment component tests to use signals and improve method delegation

src/app/features/store/pages/checkout-page/checkout-payment-step.component.spec.ts

@@ -1,5 +1,8 @@
+import { signal } from '@angular/core';
 import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { vi } from 'vitest';
 
+import { CheckoutPaymentFacade } from './checkout-payment.facade';
 import { CheckoutPaymentStepComponent } from './checkout-payment-step.component';
 import { PaymentMethod, PaymentMethodOption, TransferAccount } from './checkout-page.models';
 
@@ -17,15 +20,48 @@ describe('CheckoutPaymentStepComponent', () => {
   };
 
   let fixture: ComponentFixture<CheckoutPaymentStepComponent>;
+  let payment: {
+    paymentMethods: ReadonlyArray<PaymentMethodOption>;
+    selectedMethod: ReturnType<typeof signal<PaymentMethod>>;
+    copiedTransferField: ReturnType<typeof signal<'cvu' | 'alias' | null>>;
+    transferAccount: ReturnType<typeof signal<TransferAccount | null>>;
+    payerDni: ReturnType<typeof signal<string>>;
+    transferRequestError: ReturnType<typeof signal<string | null>>;
+    qrData: ReturnType<typeof signal<string | null>>;
+    isLoading: ReturnType<typeof signal<boolean>>;
+    canComplete: ReturnType<typeof signal<boolean>>;
+    setPurchaseId: ReturnType<typeof vi.fn>;
+    selectMethod: ReturnType<typeof vi.fn>;
+    copyTransferValue: ReturnType<typeof vi.fn>;
+    requestTransferData: ReturnType<typeof vi.fn>;
+  };
 
   beforeEach(async () => {
+    payment = {
+      paymentMethods,
+      selectedMethod: signal<PaymentMethod>('qr'),
+      copiedTransferField: signal<'cvu' | 'alias' | null>(null),
+      transferAccount: signal<TransferAccount | null>(transferAccount),
+      payerDni: signal('12345678'),
+      transferRequestError: signal<string | null>(null),
+      qrData: signal<string | null>('qr-test'),
+      isLoading: signal(false),
+      canComplete: signal(true),
+      setPurchaseId: vi.fn(),
+      selectMethod: vi.fn(),
+      copyTransferValue: vi.fn(),
+      requestTransferData: vi.fn()
+    };
+
     await TestBed.configureTestingModule({
       imports: [CheckoutPaymentStepComponent]
-    }).compileComponents();
+    })
+      .overrideComponent(CheckoutPaymentStepComponent, {
+        set: { providers: [{ provide: CheckoutPaymentFacade, useValue: payment }] }
+      })
+      .compileComponents();
 
     fixture = TestBed.createComponent(CheckoutPaymentStepComponent);
-    fixture.componentRef.setInput('paymentMethods', paymentMethods);
-    fixture.componentRef.setInput('transferAccount', transferAccount);
   });
 
   it.each([
@@ -33,33 +69,34 @@ describe('CheckoutPaymentStepComponent', () => {
     ['transfer', 'app-transfer-payment-content'],
     ['telepagos', 'app-telepagos-payment-content']
   ] as const)('renders the %s payment content', (method: PaymentMethod, selector: string) => {
-    fixture.componentRef.setInput('selectedPaymentMethod', method);
+    payment.selectedMethod.set(method);
     fixture.detectChanges();
 
     expect(fixture.nativeElement.querySelector(selector)).not.toBeNull();
   });
 
-  it('shows only the loading state while generating the payment intent', () => {
-    fixture.componentRef.setInput('selectedPaymentMethod', 'qr');
-    fixture.componentRef.setInput('isGeneratingIntent', true);
+  it('delegates method selection to the payment facade', () => {
+    fixture.detectChanges();
+    const transferRadio = fixture.nativeElement.querySelector('input[value="transfer"]') as HTMLInputElement;
+    transferRadio.dispatchEvent(new Event('change'));
+
+    expect(payment.selectMethod).toHaveBeenCalledWith('transfer');
+  });
+
+  it('shows only the loading state while generating a QR intent', () => {
+    payment.selectedMethod.set('qr');
+    payment.isLoading.set(true);
     fixture.detectChanges();
 
     expect(fixture.nativeElement.textContent).toContain('Cargando información de pago...');
     expect(fixture.nativeElement.querySelector('app-qr-payment-content')).toBeNull();
-    expect(fixture.nativeElement.querySelector('app-transfer-payment-content')).toBeNull();
-    expect(fixture.nativeElement.querySelector('app-telepagos-payment-content')).toBeNull();
   });
 
-  it('re-emits transfer copy requests', () => {
-    fixture.componentRef.setInput('selectedPaymentMethod', 'transfer');
+  it('delegates transfer copy requests to the payment facade', () => {
+    payment.selectedMethod.set('transfer');
     fixture.detectChanges();
+    fixture.nativeElement.querySelector('app-icon-button').click();
 
-    const emitted: Array<{ field: string; value: string }> = [];
-    fixture.componentInstance.copyTransferValue.subscribe((value) => emitted.push(value));
-
-    const copyButton = fixture.nativeElement.querySelector('app-icon-button');
-    copyButton.click();
-
-    expect(emitted).toEqual([{ field: 'cvu', value: transferAccount.cvu }]);
+    expect(payment.copyTransferValue).toHaveBeenCalledWith('cvu', transferAccount.cvu);
   });
 });