setLocale('de'); $v = Validator::make( ['name' => '', 'email' => 'nope', 'sshPort' => 'x'], ['name' => 'required', 'email' => 'email', 'sshPort' => 'integer'], ); $this->assertStringContainsString('muss ausgefüllt werden', $v->errors()->first('name')); $this->assertStringContainsString('gültige E-Mail-Adresse', $v->errors()->first('email')); // localized attribute label from the `attributes` array $this->assertStringContainsString('SSH-Port', $v->errors()->first('sshPort')); } public function test_messages_localized_in_english(): void { app()->setLocale('en'); $v = Validator::make(['name' => ''], ['name' => 'required']); $this->assertStringContainsString('is required', $v->errors()->first('name')); } }