add api tests

tests/Feature/Api/V1/Roles/RoleSwitcherControllerTest.php

@@ -33,7 +33,13 @@ class RoleSwitcherControllerTest extends TestCase
     public function test_switch_sets_role(): void
     {
         $user = $this->seedUser();
-        $this->seedRole();
+        $roleId = $this->seedRole();
+
+        DB::table('user_roles')->insert([
+            'user_id' => $user->id,
+            'role_id' => $roleId,
+        ]);
+
         Sanctum::actingAs($user);
 
         $response = $this->postJson('/api/v1/role-switcher/switch', [
@@ -52,6 +58,55 @@ class RoleSwitcherControllerTest extends TestCase
         $response->assertStatus(401);
     }
 
+
+    public function test_switch_rejects_role_that_user_does_not_have(): void
+    {
+        $user = $this->seedUser();
+        $this->seedRole();
+        $teacherRoleId = DB::table('roles')->insertGetId([
+            'name' => 'teacher',
+            'slug' => 'teacher',
+            'description' => 'Teacher',
+            'dashboard_route' => 'teacher/classes',
+            'priority' => 2,
+            'is_active' => 1,
+            'created_at' => now(),
+            'updated_at' => now(),
+        ]);
+
+        DB::table('user_roles')->insert([
+            'user_id' => $user->id,
+            'role_id' => $teacherRoleId,
+        ]);
+
+        Sanctum::actingAs($user);
+        $this->postJson('/api/v1/role-switcher/switch', [
+            'role' => 'admin',
+        ])
+            ->assertForbidden()
+            ->assertJsonPath('status', false);
+    }
+
+    public function test_switch_validates_empty_role_payload(): void
+    {
+        $user = $this->seedUser();
+        $this->seedRole();
+        Sanctum::actingAs($user);
+
+        $this->postJson('/api/v1/role-switcher/switch', [])
+            ->assertUnprocessable();
+    }
+
+    public function test_index_returns_not_found_when_authenticated_user_has_no_roles(): void
+    {
+        $user = $this->seedUser();
+        Sanctum::actingAs($user);
+
+        $this->getJson('/api/v1/role-switcher')
+            ->assertNotFound()
+            ->assertJsonPath('status', false);
+    }
+
     private function seedUser(): User
     {
         $userId = DB::table('users')->insertGetId([