Allow login and registration with capitalized emails

resources/views/livewire/auth/forgot-password.blade.php

@@ -1,6 +1,7 @@
 <?php
 
 use Illuminate\Support\Facades\Password;
+use Illuminate\Support\Str;
 use Livewire\Attributes\Layout;
 use Livewire\Volt\Component;
 
@@ -15,7 +16,7 @@ public function sendPasswordResetLink(): void
         $this->validate([
             'email' => ['required', 'string', 'email'],
         ]);
-
+        $this->email = Str::lower($this->email);
         Password::sendResetLink($this->only('email'));
 
         session()->flash('status', __('A reset link will be sent if the account exists.'));

resources/views/livewire/auth/login.blade.php

@@ -29,7 +29,7 @@ public function login(): void
 
         $this->ensureIsNotRateLimited();
 
-        if (! Auth::attempt(['email' => $this->email, 'password' => $this->password], $this->remember)) {
+        if (! Auth::attempt(['email' => Str::lower($this->email), 'password' => $this->password], $this->remember)) {
             RateLimiter::hit($this->throttleKey());
 
             throw ValidationException::withMessages([

resources/views/livewire/auth/register.blade.php

@@ -4,6 +4,7 @@
 use Illuminate\Auth\Events\Registered;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Hash;
+use Illuminate\Support\Str;
 use Illuminate\Validation\Rules;
 use Livewire\Attributes\Layout;
 use Livewire\Volt\Component;
@@ -21,10 +22,11 @@ public function register(): void
     {
         $validated = $this->validate([
             'name' => ['required', 'string', 'max:255'],
-            'email' => ['required', 'string', 'lowercase', 'email', 'max:255', 'unique:' . User::class],
+            'email' => ['required', 'string', 'email', 'max:255', 'unique:' . User::class],
             'password' => ['required', 'string', 'confirmed', Rules\Password::defaults()],
         ]);
 
+        $validated['email'] = Str::lower($validated['email']);
         $validated['password'] = Hash::make($validated['password']);
 
         event(new Registered(($user = User::create($validated))));

resources/views/livewire/auth/reset-password.blade.php

@@ -24,7 +24,7 @@ public function mount(string $token): void
     {
         $this->token = $token;
 
-        $this->email = request()->string('email');
+        $this->email = Str::lower(request()->string('email'));
     }
 
     /**
@@ -37,6 +37,7 @@ public function resetPassword(): void
             'email' => ['required', 'string', 'email'],
             'password' => ['required', 'string', 'confirmed', Rules\Password::defaults()],
         ]);
+        $this->email = Str::lower($this->email);
 
         // Here we will attempt to reset the user's password. If it is successful we
         // will update the password on an actual user model and persist it to the

tests/Feature/Auth/AuthenticationTest.php

@@ -4,6 +4,7 @@
 
 use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Str;
 use Livewire\Volt\Volt as LivewireVolt;
 use Tests\TestCase;
 
@@ -48,6 +49,26 @@ public function test_users_can_not_authenticate_with_invalid_password(): void
         $this->assertGuest();
     }
 
+    public function test_user_can_authenticate_with_uppercase_email(): void
+    {
+        $user = User::factory()->create([
+            'email' => '[email protected]',
+            'password' => bcrypt('password'),
+        ]);
+
+        $response = LivewireVolt::test('auth.login')
+            ->set('email', Str::upper($user->email)) // [email protected]
+            ->set('password', 'password')
+            ->call('login');
+
+        $response
+            ->assertHasNoErrors()
+            ->assertRedirect(route('dashboard', absolute: false));
+
+        $this->assertAuthenticatedAs($user);
+    }
+
+
     public function test_users_can_logout(): void
     {
         $user = User::factory()->create();

tests/Feature/Auth/PasswordResetTest.php

@@ -6,6 +6,7 @@
 use Illuminate\Auth\Notifications\ResetPassword;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Facades\Notification;
+use Illuminate\Support\Str;
 use Livewire\Volt\Volt;
 use Tests\TestCase;
 
@@ -52,6 +53,40 @@ public function test_reset_password_screen_can_be_rendered(): void
         });
     }
 
+    public function test_password_can_be_reset_with_uppercase_email(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->create([
+            'email' => '[email protected]',
+        ]);
+
+        $uppercaseEmail = Str::upper($user->email); // => [email protected]
+
+        Volt::test('auth.forgot-password')
+            ->set('email', $uppercaseEmail)
+            ->call('sendPasswordResetLink');
+
+        Notification::assertSentTo($user, ResetPassword::class, function ($notification) use ($user, $uppercaseEmail) {
+            $response = Volt::test('auth.reset-password', ['token' => $notification->token])
+                ->set('email', $uppercaseEmail)
+                ->set('password', 'password')
+                ->set('password_confirmation', 'password')
+                ->call('resetPassword');
+
+            $response
+                ->assertHasNoErrors()
+                ->assertRedirect(route('login', absolute: false));
+
+            $this->assertTrue(auth()->attempt([
+                'email' => $user->email, // => [email protected]
+                'password' => 'password',
+            ]));
+
+            return true;
+        });
+    }
+
     public function test_password_can_be_reset_with_valid_token(): void
     {
         Notification::fake();

tests/Feature/Auth/RegistrationTest.php

@@ -3,6 +3,7 @@
 namespace Tests\Feature\Auth;
 
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Str;
 use Livewire\Volt\Volt;
 use Tests\TestCase;
 
@@ -32,4 +33,27 @@ public function test_new_users_can_register(): void
 
         $this->assertAuthenticated();
     }
+
+    public function test_new_user_email_is_stored_as_lowercase_even_if_input_is_uppercase(): void
+    {
+        $uppercaseEmail = '[email protected]';
+
+        $response = Volt::test('auth.register')
+            ->set('name', 'Test User')
+            ->set('email', $uppercaseEmail)
+            ->set('password', 'password')
+            ->set('password_confirmation', 'password')
+            ->call('register');
+
+        $response
+            ->assertHasNoErrors()
+            ->assertRedirect(route('dashboard', absolute: false));
+
+        $this->assertAuthenticated();
+
+        $this->assertDatabaseHas('users', [
+            'email' => Str::lower($uppercaseEmail),
+        ]);
+    }
+
 }