[1.x] fix: change length of email field (#4117)

* test: write failing tests for email length

* style: formatting

* style: formatting

* fix: change length of email field

* test: write test for email with too long local part

* style: formatting

* chore: remove unnecessary tests

framework/core/migrations/2024_11_18_000000_increase_email_field_length.php

@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Schema\Builder;
+
+return [
+    'up' => function (Builder $schema) {
+        $schema->table('users', function (Blueprint $table) {
+            $table->string('email', 254)->change();
+        });
+    },
+
+    'down' => function (Builder $schema) {
+        $schema->table('users', function (Blueprint $table) {
+            $table->string('email', 150)->change();
+        });
+    }
+];

framework/core/tests/integration/api/users/CreateTest.php

@@ -139,6 +139,71 @@ public function admins_can_create_activated_users()
         $this->assertEquals(1, $user->is_email_confirmed);
     }
 
+    /**
+     * @test
+     */
+    public function admin_can_create_user_with_longest_valid_email()
+    {
+        $localPart = str_repeat('a', 64);
+        $domain = str_repeat('a', 61).'.'.str_repeat('a', 60).'.'.str_repeat('a', 60).'.local';
+        $email = $localPart.'@'.$domain;
+
+        $response = $this->send(
+            $this->request(
+                'POST',
+                '/api/users',
+                [
+                    'authenticatedAs' => 1,
+                    'json' => [
+                        'data' => [
+                            'attributes' => [
+                                'username' => 'test',
+                                'password' => 'too-obscure',
+                                'email' => $email,
+                            ],
+                        ]
+                    ],
+                ]
+            )
+        );
+
+        $this->assertEquals(201, $response->getStatusCode());
+
+        /** @var User $user */
+        $user = User::where('username', 'test')->firstOrFail();
+
+        $this->assertEquals($email, $user->email);
+    }
+
+    /**
+     * @test
+     */
+    public function admin_cannot_create_user_with_invalid_email_length()
+    {
+        $email = str_repeat('a', 65).'@'.str_repeat('a', 256).'.local';
+
+        $response = $this->send(
+            $this->request(
+                'POST',
+                '/api/users',
+                [
+                    'authenticatedAs' => 1,
+                    'json' => [
+                        'data' => [
+                            'attributes' => [
+                                'username' => 'test',
+                                'password' => 'too-obscure',
+                                'email' => $email,
+                            ],
+                        ]
+                    ],
+                ]
+            )
+        );
+
+        $this->assertEquals(422, $response->getStatusCode());
+    }
+
     /**
      * @test
      */