--- /dev/null
+<?php
+
+namespace Drupal\Tests\block_content\Kernel\Migrate\d6;
+
+use Drupal\block_content\Entity\BlockContent;
+use Drupal\Tests\migrate_drupal\Kernel\d6\MigrateDrupal6TestBase;
+
+/**
+ * Tests migration of i18n custom block strings.
+ *
+ * @group migrate_drupal_6
+ */
+class MigrateCustomBlockContentTranslationTest extends MigrateDrupal6TestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = [
+ 'block_content',
+ 'content_translation',
+ 'language',
+ // Required for translation migrations.
+ 'migrate_drupal_multilingual',
+ ];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+ $this->installConfig(['block_content']);
+ $this->installEntitySchema('block_content');
+ $this->executeMigrations([
+ 'language',
+ 'd6_filter_format',
+ 'block_content_type',
+ 'block_content_body_field',
+ 'd6_custom_block',
+ 'd6_custom_block_translation',
+ ]);
+ }
+
+ /**
+ * Tests the Drupal 6 i18n custom block strings to Drupal 8 migration.
+ */
+ public function testCustomBlockContentTranslation() {
+ /** @var \Drupal\block_content\Entity\BlockContent $block */
+ $block = BlockContent::load(1)->getTranslation('fr');
+ $this->assertSame('fr - Static Block', $block->label());
+ $this->assertGreaterThanOrEqual(REQUEST_TIME, $block->getChangedTime());
+ $this->assertLessThanOrEqual(time(), $block->getChangedTime());
+ $this->assertSame('fr', $block->language()->getId());
+ $this->assertSame('<h3>fr - My first custom block body</h3>', $block->body->value);
+ $this->assertSame('full_html', $block->body->format);
+
+ $block = $block->getTranslation('zu');
+ $this->assertSame('My block 1', $block->label());
+ $this->assertGreaterThanOrEqual(REQUEST_TIME, $block->getChangedTime());
+ $this->assertLessThanOrEqual(time(), $block->getChangedTime());
+ $this->assertSame('zu', $block->language()->getId());
+ $this->assertSame('<h3>zu - My first custom block body</h3>', $block->body->value);
+ $this->assertSame('full_html', $block->body->format);
+
+ $block = BlockContent::load(2)->getTranslation('fr');
+ $this->assertSame('Encore un bloc statique', $block->label());
+ $this->assertGreaterThanOrEqual(REQUEST_TIME, $block->getChangedTime());
+ $this->assertLessThanOrEqual(time(), $block->getChangedTime());
+ $this->assertSame('fr', $block->language()->getId());
+ $this->assertSame('Nom de vocabulaire beaucoup plus long que trente-deux caractères', $block->body->value);
+ $this->assertSame('full_html', $block->body->format);
+ }
+
+}