test: add alias tests to generateRouteRecords

Enable the todo test for merging alias properties and add tests for
single, multiple, and dynamic alias paths.

Author: posva

packages/router/src/unplugin/codegen/__snapshots__/generateRouteRecords.spec.ts.snap

@@ -732,6 +732,49 @@ exports[`generateRouteRecord > route block > adds meta data 1`] = `
 ]"
 `;
 
+exports[`generateRouteRecord > route block > handles a single static alias 1`] = `
+"[
+  {
+    path: '/users',
+    name: '/users',
+    component: () => import('users.vue'),
+    alias: ["/people"],
+    /* no children */
+  }
+]"
+`;
+
+exports[`generateRouteRecord > route block > handles dynamic alias path 1`] = `
+"[
+  {
+    path: '/users',
+    /* internal name: '/users' */
+    /* no component */
+    children: [
+      {
+        path: ':id',
+        name: '/users/[id]',
+        component: () => import('users/[id].vue'),
+        alias: ["/people/:id"],
+        /* no children */
+      }
+    ],
+  }
+]"
+`;
+
+exports[`generateRouteRecord > route block > handles multiple aliases 1`] = `
+"[
+  {
+    path: '/users',
+    name: '/users',
+    component: () => import('users.vue'),
+    alias: ["/people","/members"],
+    /* no children */
+  }
+]"
+`;
+
 exports[`generateRouteRecord > route block > handles named views with empty route blocks 1`] = `
 "[
   {
@@ -750,6 +793,18 @@ exports[`generateRouteRecord > route block > handles named views with empty rout
 ]"
 `;
 
+exports[`generateRouteRecord > route block > merges alias properties 1`] = `
+"[
+  {
+    path: '/',
+    name: '/',
+    component: () => import('index.vue'),
+    alias: ["/one","/two","/three"],
+    /* no children */
+  }
+]"
+`;
+
 exports[`generateRouteRecord > route block > merges deep meta properties 1`] = `
 "[
   {

packages/router/src/unplugin/codegen/generateRouteRecords.spec.ts

@@ -302,28 +302,47 @@ describe('generateRouteRecord', () => {
       expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
     })
 
-    // FIXME: allow aliases
-    it.todo('merges alias properties', async () => {
+    it('merges alias properties', async () => {
       const tree = new PrefixTree(DEFAULT_OPTIONS)
       const node = tree.insert('index', 'index.vue')
       node.setCustomRouteBlock('index', {
-        alias: '/one',
+        alias: ['/one'],
       })
       node.setCustomRouteBlock('index@named', {
         alias: ['/two', '/three'],
       })
 
-      expect(generateRouteRecordSimple(tree)).toMatchInlineSnapshot(`
-        "[
-          {
-            path: '/',
-            name: '/',
-            component: () => import('index'),
-            /* no props */
-            /* no children */
-          }
-        ]"
-      `)
+      expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
+    })
+
+    it('handles a single static alias', () => {
+      const tree = new PrefixTree(DEFAULT_OPTIONS)
+      const node = tree.insert('users', 'users.vue')
+      node.setCustomRouteBlock('users', {
+        alias: ['/people'],
+      })
+
+      expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
+    })
+
+    it('handles multiple aliases', () => {
+      const tree = new PrefixTree(DEFAULT_OPTIONS)
+      const node = tree.insert('users', 'users.vue')
+      node.setCustomRouteBlock('users', {
+        alias: ['/people', '/members'],
+      })
+
+      expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
+    })
+
+    it('handles dynamic alias path', () => {
+      const tree = new PrefixTree(DEFAULT_OPTIONS)
+      const node = tree.insert('users/[id]', 'users/[id].vue')
+      node.setCustomRouteBlock('users/[id]', {
+        alias: ['/people/:id'],
+      })
+
+      expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
     })
 
     it('merges deep meta properties', async () => {