--- /dev/null
+<?php
+
+namespace Drupal\Tests\migrate_plus\Unit\process;
+
+use Drupal\Component\Transliteration\PhpTransliteration;
+use Drupal\migrate\MigrateExecutableInterface;
+use Drupal\migrate\Row;
+use Drupal\migrate_plus\Plugin\migrate\process\Transliteration;
+use Drupal\Tests\migrate\Unit\process\MigrateProcessTestCase;
+
+/**
+ * Tests the transliteration process plugin.
+ *
+ * @group migrate_plus
+ */
+class TransliterationTest extends MigrateProcessTestCase {
+
+ /**
+ * A transliteration instance.
+ *
+ * @var \Drupal\Component\Transliteration\TransliterationInterface
+ */
+ protected $transliteration;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ $this->transliteration = new PhpTransliteration();
+ $this->row = $this->getMockBuilder(Row::class)
+ ->disableOriginalConstructor()
+ ->getMock();
+ $this->migrateExecutable = $this->getMockBuilder(MigrateExecutableInterface::class)
+ ->disableOriginalConstructor()
+ ->getMock();
+ parent::setUp();
+ }
+
+ /**
+ * Tests transliteration transformation of non-alphanumeric characters.
+ */
+ public function testTransform() {
+ $actual = '9000004351_53494854_Spøgelsesjægerneáéö';
+ $expected_result = '9000004351_53494854_Spogelsesjaegerneaeo';
+
+ $plugin = new Transliteration([], 'transliteration', [], $this->transliteration);
+ $value = $plugin->transform($actual, $this->migrateExecutable, $this->row, 'destinationproperty');
+ $this->assertEquals($expected_result, $value);
+ }
+
+}