--- /dev/null
+<?php
+
+namespace Drupal\Tests\migrate_drupal\Kernel\Plugin\migrate\source\d7;
+
+use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;
+
+/**
+ * Tests the variable source plugin.
+ *
+ * @covers \Drupal\migrate_drupal\Plugin\migrate\source\d7\VariableTranslation
+ *
+ * @group migrate_drupal
+ */
+class VariableTranslationTest extends MigrateSqlSourceTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['migrate_drupal'];
+
+ /**
+ * {@inheritdoc}
+ */
+ public function providerSource() {
+ $tests = [];
+
+ // The source data.
+ $tests[0]['source_data']['variable_store'] = [
+ [
+ 'realm' => 'language',
+ 'realm_key' => 'fr',
+ 'name' => 'site_slogan',
+ 'value' => 'fr - site slogan',
+ 'serialized' => '0',
+ ],
+ [
+ 'realm' => 'language',
+ 'realm_key' => 'fr',
+ 'name' => 'user_mail_status_blocked_subject',
+ 'value' => 'fr - BEGONE!',
+ 'serialized' => '0',
+ ],
+ [
+ 'realm' => 'language',
+ 'realm_key' => 'is',
+ 'name' => 'site_slogan',
+ 'value' => 's:16:"is - site slogan";',
+ 'serialized' => '1',
+ ],
+ ];
+
+ // The expected results.
+ $tests[0]['expected_data'] = [
+ [
+ 'language' => 'fr',
+ 'site_slogan' => 'fr - site slogan',
+ 'user_mail_status_blocked_subject' => 'fr - BEGONE!',
+ ],
+ [
+ 'language' => 'is',
+ 'site_slogan' => 'is - site slogan',
+ ],
+ ];
+
+ // The expected count.
+ $tests[0]['expected_count'] = NULL;
+
+ // The migration configuration.
+ $tests[0]['configuration']['variables'] = [
+ 'site_slogan',
+ 'user_mail_status_blocked_subject',
+ ];
+
+ return $tests;
+ }
+
+}