enhance(frontend): niraxにテストを追加 (#17287)

* fix(frontend): follow-up of #13509

* fix: fix use of inappropriate method

* enhance(frontend): niraxにテストを追加

packages/frontend/test/lib/nirax/fixture.ts

@@ -0,0 +1,80 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import type { Component } from 'vue';
+import { Nirax } from '@/lib/nirax.js';
+import type { RouteDef } from '@/lib/nirax.js';
+
+export const homeComponent = { name: 'home-page' } as Component;
+export const postComponent = { name: 'post-page' } as Component;
+export const fileComponent = { name: 'file-page' } as Component;
+export const optionalComponent = { name: 'optional-page' } as Component;
+export const userComponent = { name: 'user-page' } as Component;
+export const followersComponent = { name: 'followers-page' } as Component;
+export const privateComponent = { name: 'private-page' } as Component;
+export const notFoundRouteComponent = { name: 'not-found-route' } as Component;
+export const loginFallbackComponent = { name: 'login-fallback' } as Component;
+
+export const routes = [
+	{
+		path: '/',
+		component: homeComponent,
+	},
+	{
+		path: '/posts/:postId',
+		component: postComponent,
+		query: {
+			from: 'source',
+		},
+		hash: 'section',
+	},
+	{
+		path: '/files/:path(*)',
+		component: fileComponent,
+	},
+	{
+		path: '/optional/:slug?',
+		component: optionalComponent,
+	},
+	{
+		path: '/old',
+		redirect: '/posts/redirected',
+	},
+	{
+		path: '/legacy/:postId',
+		redirect: props => `/posts/${props.get('postId')}`,
+	},
+	{
+		path: '/loop-a',
+		redirect: '/loop-b',
+	},
+	{
+		path: '/loop-b',
+		redirect: '/loop-a',
+	},
+	{
+		path: '/user/:id',
+		component: userComponent,
+		children: [
+			{
+				path: '/followers',
+				component: followersComponent,
+			},
+		],
+	},
+	{
+		path: '/private',
+		component: privateComponent,
+		loginRequired: true,
+	},
+	{
+		path: '/:(*)',
+		component: notFoundRouteComponent,
+	},
+] as const satisfies RouteDef[];
+
+export function createRouter(currentFullPath = '/', isLoggedIn = true) {
+	return new Nirax(routes, currentFullPath, isLoggedIn, loginFallbackComponent);
+}