--- /dev/null
+<?php
+
+namespace Drupal\Tests\block_content\Kernel\Migrate\d7;
+
+use Drupal\block_content\Entity\BlockContent;
+use Drupal\Tests\migrate_drupal\Kernel\d7\MigrateDrupal7TestBase;
+
+/**
+ * Tests migration of i18n custom block strings.
+ *
+ * @group migrate_drupal_7
+ */
+class MigrateCustomBlockContentTranslationTest extends MigrateDrupal7TestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = [
+ 'block_content',
+ 'content_translation',
+ 'filter',
+ 'language',
+ 'text',
+ // Required for translation migrations.
+ 'migrate_drupal_multilingual',
+ ];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+ $this->installConfig(['block_content']);
+ $this->installEntitySchema('block_content');
+ $this->executeMigrations([
+ 'language',
+ 'd7_filter_format',
+ 'block_content_type',
+ 'block_content_body_field',
+ 'd7_custom_block',
+ 'd7_custom_block_translation',
+ ]);
+ }
+
+ /**
+ * Tests the Drupal 7 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 - Mildly amusing limerick of the day', $block->label());
+ $this->assertGreaterThanOrEqual($block->getChangedTime(), \Drupal::time()->getRequestTime());
+ $this->assertLessThanOrEqual(time(), $block->getChangedTime());
+ $this->assertSame('fr', $block->language()->getId());
+ $translation = "fr - A fellow jumped off a high wall\r\nAnd had a most terrible fall\r\nHe went back to bed\r\nWith a bump on his head\r\nThat's why you don't jump off a wall";
+ $this->assertSame($translation, $block->body->value);
+ $this->assertSame('filtered_html', $block->body->format);
+
+ $block = $block->getTranslation('is');
+ $this->assertSame('is - Mildly amusing limerick of the day', $block->label());
+ $this->assertGreaterThanOrEqual($block->getChangedTime(), \Drupal::time()->getRequestTime());
+ $this->assertLessThanOrEqual(time(), $block->getChangedTime());
+ $this->assertSame('is', $block->language()->getId());
+ $text = "A fellow jumped off a high wall\r\nAnd had a most terrible fall\r\nHe went back to bed\r\nWith a bump on his head\r\nThat's why you don't jump off a wall";
+ $this->assertSame($text, $block->body->value);
+ $this->assertSame('filtered_html', $block->body->format);
+ }
+
+}