--- /dev/null
+<?php
+
+namespace Drupal\Tests\user\Kernel\Migrate\d6;
+
+use Drupal\file\Entity\File;
+use Drupal\file\FileInterface;
+use Drupal\Tests\file\Kernel\Migrate\d6\FileMigrationTestTrait;
+use Drupal\Tests\migrate_drupal\Kernel\d6\MigrateDrupal6TestBase;
+
+/**
+ * User pictures migration.
+ *
+ * @group migrate_drupal_6
+ */
+class MigrateUserPictureD6FileTest extends MigrateDrupal6TestBase {
+
+ use FileMigrationTestTrait;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ $this->installEntitySchema('file');
+ $this->executeMigration('d6_user_picture_file');
+ $this->setUpMigratedFiles();
+ }
+
+ /**
+ * Asserts a file entity.
+ *
+ * @param int $fid
+ * The file ID.
+ * @param string $name
+ * The expected file name.
+ * @param int $size
+ * The expected file size.
+ * @param string $uri
+ * The expected file URI.
+ * @param string $type
+ * The expected MIME type.
+ * @param int $uid
+ * The expected file owner ID.
+ */
+ protected function assertEntity($fid, $name, $size, $uri, $type, $uid) {
+ /** @var \Drupal\file\FileInterface $file */
+ $file = File::load($fid);
+ $this->assertInstanceOf(FileInterface::class, $file);
+ $this->assertSame($name, $file->getFilename());
+ $this->assertSame($size, $file->getSize());
+ $this->assertSame($uri, $file->getFileUri());
+ $this->assertSame($type, $file->getMimeType());
+ $this->assertSame($uid, $file->getOwnerId());
+ }
+
+ /**
+ * Tests the D6 user pictures migration in combination with D6 file.
+ */
+ public function testUserPicturesWithD6File() {
+ $this->assertEntity(1, 'image-test.jpg', '1901', 'public://image-test.jpg', 'image/jpeg', '2');
+ $this->assertEntity(2, 'image-test.png', '125', 'public://image-test.png', 'image/png', '8');
+ $this->assertEntity(3, 'Image1.png', '39325', 'public://image-1.png', 'image/png', '1');
+ $this->assertEntity(4, 'Image2.jpg', '1831', 'public://image-2.jpg', 'image/jpeg', '1');
+ $this->assertEntity(5, 'Image-test.gif', '183', 'public://image-test.gif', 'image/jpeg', '1');
+ $this->assertEntity(6, 'html-1.txt', '24', 'public://html-1.txt', 'text/plain', '1');
+ }
+
+}