--- /dev/null
+<?php
+
+namespace Drupal\Tests\file\Unit\Plugin\migrate\cckfield\d6;
+
+use Drupal\migrate\Plugin\MigrationInterface;
+use Drupal\migrate\Row;
+use Drupal\Tests\UnitTestCase;
+use Drupal\file\Plugin\migrate\cckfield\d6\FileField;
+use Prophecy\Argument;
+
+/**
+ * @coversDefaultClass \Drupal\file\Plugin\migrate\cckfield\d6\FileField
+ * @group file
+ * @group legacy
+ */
+class FileCckTest extends UnitTestCase {
+
+ /**
+ * @var \Drupal\migrate_drupal\Plugin\MigrateCckFieldInterface
+ */
+ protected $plugin;
+
+ /**
+ * @var \Drupal\migrate\Plugin\MigrationInterface
+ */
+ protected $migration;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ $this->plugin = new FileField([], 'file', []);
+
+ $migration = $this->prophesize(MigrationInterface::class);
+
+ // The plugin's processFieldValues() method will call
+ // mergeProcessOfProperty() and return nothing. So, in order to examine the
+ // process pipeline created by the plugin, we need to ensure that
+ // getProcess() always returns the last input to mergeProcessOfProperty().
+ $migration->mergeProcessOfProperty(Argument::type('string'), Argument::type('array'))
+ ->will(function ($arguments) use ($migration) {
+ $migration->getProcess()->willReturn($arguments[1]);
+ });
+ $this->migration = $migration->reveal();
+ }
+
+ /**
+ * @covers ::processCckFieldValues
+ */
+ public function testProcessCckFieldValues() {
+ $this->plugin->processCckFieldValues($this->migration, 'somefieldname', []);
+
+ $expected = [
+ 'plugin' => 'd6_cck_file',
+ 'source' => 'somefieldname',
+ ];
+ $this->assertSame($expected, $this->migration->getProcess());
+ }
+
+ /**
+ * Data provider for testGetFieldType().
+ */
+ public function getFieldTypeProvider() {
+ return [
+ ['image', 'imagefield_widget'],
+ ['file', 'filefield_widget'],
+ ['file', 'x_widget']
+ ];
+ }
+
+ /**
+ * @covers ::getFieldType
+ * @dataProvider getFieldTypeProvider
+ */
+ public function testGetFieldType($expected_type, $widget_type, array $settings = []) {
+ $row = new Row();
+ $row->setSourceProperty('widget_type', $widget_type);
+ $row->setSourceProperty('global_settings', $settings);
+ $this->assertSame($expected_type, $this->plugin->getFieldType($row));
+ }
+
+}