--- /dev/null
+<?php
+
+namespace Drupal\Tests\migrate\Functional\process;
+
+use Drupal\migrate\MigrateExecutable;
+use Drupal\migrate\MigrateMessage;
+use Drupal\migrate\Plugin\MigrateIdMapInterface;
+use Drupal\migrate\Plugin\MigrationInterface;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests the 'download' process plugin.
+ *
+ * @group migrate
+ */
+class DownloadFunctionalTest extends BrowserTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['migrate', 'file'];
+
+ /**
+ * Tests that an exception is thrown bu migration continues with the next row.
+ */
+ public function testExceptionThrow() {
+ $invalid_url = "{$this->baseUrl}/not-existent-404";
+ $valid_url = "{$this->baseUrl}/core/misc/favicon.ico";
+
+ $definition = [
+ 'source' => [
+ 'plugin' => 'embedded_data',
+ 'data_rows' => [
+ ['url' => $invalid_url, 'uri' => 'public://first.txt'],
+ ['url' => $valid_url, 'uri' => 'public://second.ico'],
+ ],
+ 'ids' => [
+ 'url' => ['type' => 'string'],
+ ],
+ ],
+ 'process' => [
+ 'uri' => [
+ 'plugin' => 'download',
+ 'source' => ['url', 'uri'],
+ ]
+ ],
+ 'destination' => [
+ 'plugin' => 'entity:file',
+ ],
+ ];
+
+ $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
+
+ $executable = new MigrateExecutable($migration, new MigrateMessage());
+ $result = $executable->import();
+
+ // Check that the migration has completed.
+ $this->assertEquals($result, MigrationInterface::RESULT_COMPLETED);
+
+ /** @var \Drupal\migrate\Plugin\MigrateIdMapInterface $id_map_plugin */
+ $id_map_plugin = $migration->getIdMap();
+
+ // Check that the first row was marked as failed in the id map table.
+ $map_row = $id_map_plugin->getRowBySource(['url' => $invalid_url]);
+ $this->assertEquals(MigrateIdMapInterface::STATUS_FAILED, $map_row['source_row_status']);
+ $this->assertNull($map_row['destid1']);
+
+ // Check that a message with the thrown exception has been logged.
+ $messages = $id_map_plugin->getMessageIterator(['url' => $invalid_url])->fetchAll();
+ $this->assertCount(1, $messages);
+ $message = reset($messages);
+ $this->assertEquals("Cannot read from non-readable stream ($invalid_url)", $message->message);
+ $this->assertEquals(MigrationInterface::MESSAGE_ERROR, $message->level);
+
+ // Check that the second row was migrated successfully.
+ $map_row = $id_map_plugin->getRowBySource(['url' => $valid_url]);
+ $this->assertEquals(MigrateIdMapInterface::STATUS_IMPORTED, $map_row['source_row_status']);
+ $this->assertEquals(1, $map_row['destid1']);
+ }
+
+}