Fix Italian and Spanish locale handling (#394)

tests/regression/RegistrationLanguageTest.php

@@ -0,0 +1,96 @@
+<?php
+
+if (!isset($argv[1])) {
+    foreach (['es' => 'es', 'invalid' => 'en'] as $configured => $expected) {
+        $command = escapeshellarg(PHP_BINARY)
+            . ' '
+            . escapeshellarg(__FILE__)
+            . ' '
+            . escapeshellarg($configured)
+            . ' '
+            . escapeshellarg($expected);
+
+        passthru($command, $status);
+        if ($status !== 0) {
+            exit($status);
+        }
+    }
+
+    fwrite(STDOUT, "Registration language regression test passed.\n");
+    exit(0);
+}
+
+define('USER', 2);
+define('TB_PREFIX', 'test_');
+define('SERVER_LANG', $argv[1]);
+define('START_DATE', date('d.m.Y'));
+define('START_TIME', '00:00');
+define('PROTECTION', 0);
+
+require_once __DIR__ . '/../../GameEngine/Database/DatabaseUserQueries.php';
+
+final class RegistrationLanguageStatement
+{
+    public $insert_id = 42;
+
+    public function bind_param($types, &...$values)
+    {
+    }
+
+    public function execute()
+    {
+        return true;
+    }
+
+    public function close()
+    {
+    }
+}
+
+final class RegistrationLanguageConnection
+{
+    public function prepare($query)
+    {
+        return new RegistrationLanguageStatement();
+    }
+}
+
+final class RegistrationLanguageHarness
+{
+    use DatabaseUserQueries;
+
+    public $dblink;
+    public $language;
+
+    public function __construct()
+    {
+        $this->dblink = new RegistrationLanguageConnection();
+    }
+
+    public function updateUserField($ref, $field, $value, $switch)
+    {
+        if ($field === 'lang') {
+            $this->language = $value;
+        }
+    }
+
+    private function grantRegistrationGold($id)
+    {
+    }
+}
+
+$database = new RegistrationLanguageHarness();
+$id = $database->register('player', 'password', '[email protected]', 1, '');
+
+if ($id !== 42) {
+    fwrite(STDERR, "Registration did not return the inserted account ID.\n");
+    exit(1);
+}
+
+if ($database->language !== $argv[2]) {
+    fwrite(
+        STDERR,
+        "Expected registration language {$argv[2]}; got {$database->language}.\n"
+    );
+    exit(1);
+}