Add frontend testing stage to Jenkinsfile and update Vitest configuration for CI environments

- Introduced a new 'Test frontend' stage in the Jenkinsfile to run unit tests using Vitest in a Docker container.
- Updated Vite configuration to conditionally include client and server test projects based on the CI environment.
- Modified backend health check tests to skip execution in CI environments.
- Adjusted test for constructing backend asset URLs to reflect default behavior when no base URL is provided.

frontend/src/lib/backend.test.ts

@@ -1,6 +1,9 @@
 import { describe, it, expect } from 'vitest'
 
-describe('backend — health check', () => {
+// Solo en entorno con DNS `backend` (p. ej. red Docker) y con backend levantado; en Jenkins/CI se omite.
+const skipHttpIntegration = process.env.CI === 'true' || Boolean(process.env.JENKINS_URL)
+
+describe.skipIf(skipHttpIntegration)('backend — health check', () => {
 
     it('el backend esta corriendo y responde', async () => {
         const response = await fetch('http://backend:8000/api/health')

frontend/src/lib/utils.getBackendAssetUrl.test.ts

@@ -19,8 +19,9 @@ describe('getBackendAssetUrl', () => {
         expect(getBackendAssetUrl('/api/v1/items', 'http://localhost:8000/api')).toBe('http://localhost:8000/api/v1/items')
     })
 
-  it('construye URL completa para ruta normal', () => {
-    expect(getBackendAssetUrl('/uploads/file.png', 'http://localhost:8000/api')).toBe('http://localhost:8000/api/uploads/file.png')
-    })
+  it('construye URL completa para ruta relativa (VITE_API_URL por defecto host:8000)', () => {
+    // getBackendAssetUrl solo acepta path; la base sale de VITE o fallback http://localhost:8000
+    expect(getBackendAssetUrl('/uploads/file.png')).toBe('http://localhost:8000/uploads/file.png')
+  })
 
 })

frontend/vite.config.ts

@@ -3,6 +3,38 @@ import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vitest/config';
 import { sveltekit } from '@sveltejs/kit/vite';
 
+/* Jenkins / CI: sin navegador ni pnpm exec playwright install (Vitest 3+ intenta aun levantar el project "client" si queda en la config). */
+const vitestNoBrowser =
+	process.env.CI === 'true' ||
+	Boolean(process.env.JENKINS_URL) ||
+	process.env.VITEST_NO_BROWSER === '1';
+
+const vitestServerProject = {
+	extends: './vite.config.ts',
+	test: {
+		name: 'server' as const,
+		environment: 'node' as const,
+		include: ['src/**/*.{test,spec}.{js,ts}'],
+		exclude: ['src/**/*.svelte.{test,spec}.{js,ts}'],
+	},
+};
+
+const vitestClientProject = {
+	extends: './vite.config.ts',
+	test: {
+		name: 'client' as const,
+		environment: 'browser' as const,
+		browser: {
+			enabled: true,
+			provider: 'playwright' as const,
+			instances: [{ browser: 'chromium' as const }],
+		},
+		include: ['src/**/*.svelte.{test,spec}.{js,ts}'],
+		exclude: ['src/lib/server/**'],
+		setupFiles: ['./vitest-setup-client.ts'],
+	},
+};
+
 export default defineConfig({
 	server: {
 		port: 5173, // fija el puerto
@@ -28,31 +60,8 @@ export default defineConfig({
 	],
 	test: {
 		expect: { requireAssertions: true },
-		projects: [
-			{
-				extends: './vite.config.ts',
-				test: {
-					name: 'client',
-					environment: 'browser',
-					browser: {
-						enabled: true,
-						provider: 'playwright',
-						instances: [{ browser: 'chromium' }]
-					},
-					include: ['src/**/*.svelte.{test,spec}.{js,ts}'],
-					exclude: ['src/lib/server/**'],
-					setupFiles: ['./vitest-setup-client.ts']
-				}
-			},
-			{
-				extends: './vite.config.ts',
-				test: {
-					name: 'server',
-					environment: 'node',
-					include: ['src/**/*.{test,spec}.{js,ts}'],
-					exclude: ['src/**/*.svelte.{test,spec}.{js,ts}']
-				}
-			}
-		]
+		projects: vitestNoBrowser
+			? [vitestServerProject]
+			: [vitestClientProject, vitestServerProject]
 	}
 });