--- /dev/null
+<?php
+
+namespace Drupal\Tests\menu_link_content\Unit\Plugin\migrate\process;
+
+use Drupal\Core\DependencyInjection\ContainerBuilder;
+use Drupal\Core\Url;
+use Drupal\menu_link_content\Plugin\migrate\process\LinkUri;
+use Drupal\migrate\MigrateExecutableInterface;
+use Drupal\migrate\Row;
+use Drupal\Tests\UnitTestCase;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Path\PathValidator;
+
+/**
+ * Tests \Drupal\menu_link_content\Plugin\migrate\process\LinkUri.
+ *
+ * @group menu_link_content
+ *
+ * @coversDefaultClass \Drupal\menu_link_content\Plugin\migrate\process\LinkUri
+ */
+class LinkUriTest extends UnitTestCase {
+
+ /**
+ * The entity type manager prophecy used in the test.
+ *
+ * @var \Prophecy\Prophecy\ProphecyInterface|\Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * The 'link_uri' process plugin being tested.
+ *
+ * @var \Drupal\menu_link_content\Plugin\migrate\process\LinkUri
+ */
+ protected $processPlugin;
+
+ /**
+ * The path validator prophecy used in the test.
+ *
+ * @var \Drupal\Core\Path\PathValidator
+ */
+ protected $pathValidator;
+
+ /**
+ * The fake entity type ID used in the test.
+ *
+ * @var string
+ */
+ protected $entityTypeId = 'the_entity_type_id';
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ $this->entityTypeManager = $this->prophesize(EntityTypeManagerInterface::class);
+ $this->entityTypeManager->getDefinitions()->willReturn([$this->entityTypeId => '']);
+ $this->processPlugin = new LinkUri([], 'link_uri', [], $this->entityTypeManager->reveal());
+
+ // Url::fromInternalUri() accesses the path validator from the global
+ // container.
+ // @see \Drupal\Core\Url::fromInternalUri()
+ $this->pathValidator = $this->prophesize(PathValidator::class);
+ $container = new ContainerBuilder();
+ $container->set('path.validator', $this->pathValidator->reveal());
+ \Drupal::setContainer($container);
+ }
+
+ /**
+ * Tests LinkUri::transform().
+ *
+ * @param array $value
+ * The value to pass to LinkUri::transform().
+ * @param string $expected
+ * The expected return value of LinkUri::transform().
+ * @param \Drupal\Core\Url $url
+ * (optional) The URL that the path validator prophecy will return.
+ *
+ * @dataProvider providerTestTransform
+ *
+ * @covers ::transform
+ */
+ public function testTransform(array $value, $expected, Url $url = NULL) {
+ $migrate_executable = $this->prophesize(MigrateExecutableInterface::class);
+ $row = $this->prophesize(Row::class);
+
+ if ($url) {
+ $this->pathValidator->getUrlIfValidWithoutAccessCheck(reset($value))->willReturn($url);
+ }
+
+ $actual = $this->processPlugin->transform($value, $migrate_executable->reveal(), $row->reveal(), 'link/uri');
+ $this->assertEquals($expected, $actual);
+ }
+
+ /**
+ * Provides test cases for LinkUriTest::testTransform().
+ *
+ * @return array
+ * An array of test cases, each which the following values:
+ * - The value array to pass to LinkUri::transform().
+ * - The expected path returned by LinkUri::transform().
+ * - (optional) A URL object that the path validator prophecy will return.
+ */
+ public function providerTestTransform() {
+ $tests = [];
+
+ $value = ['http://example.com'];
+ $expected = 'http://example.com';
+ $tests['with_scheme'] = [$value, $expected];
+
+ $value = ['/test'];
+ $expected = 'internal:/test';
+ $tests['leading_slash'] = [$value, $expected];
+
+ $value = ['test'];
+ $expected = 'internal:/test';
+ $tests['without_scheme'] = [$value, $expected];
+
+ $value = ['<front>'];
+ $expected = 'internal:/';
+ $tests['front'] = [$value, $expected];
+
+ $url = Url::fromRoute('route_name');
+ $tests['with_route'] = [$value, $expected, $url];
+
+ $url = Url::fromRoute('entity.not_an_entity_type_id.canonical');
+ $tests['without_entity_type'] = [$value, $expected, $url];
+
+ $url = Url::fromRoute('entity.the_entity_type_id.canonical');
+ $tests['without_route_parameter'] = [$value, $expected, $url];
+
+ $url = Url::fromRoute('entity.the_entity_type_id.canonical', ['the_entity_type_id' => 'the_entity_id']);
+ $expected = 'entity:the_entity_type_id/the_entity_id';
+ $tests['entity_path'] = [$value, $expected, $url];
+
+ return $tests;
+ }
+
+}