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diff --git a/web/core/modules/migrate/tests/src/Unit/MigrationTest.php b/web/core/modules/migrate/tests/src/Unit/MigrationTest.php
new file mode 100644
index 000000000..649104b39
--- /dev/null
+++ b/web/core/modules/migrate/tests/src/Unit/MigrationTest.php
@@ -0,0 +1,175 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\migrate\Unit\MigrationTest.
+ */
+
+namespace Drupal\Tests\migrate\Unit;
+
+use Drupal\migrate\Plugin\MigrationInterface;
+use Drupal\migrate\Plugin\Migration;
+use Drupal\migrate\Exception\RequirementsException;
+use Drupal\migrate\Plugin\MigrateDestinationInterface;
+use Drupal\migrate\Plugin\MigrateSourceInterface;
+use Drupal\migrate\Plugin\MigrationPluginManagerInterface;
+use Drupal\migrate\Plugin\RequirementsInterface;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\migrate\Plugin\Migration
+ *
+ * @group Migration
+ */
+class MigrationTest extends UnitTestCase {
+
+  /**
+   * Tests checking requirements for source plugins.
+   *
+   * @covers ::checkRequirements
+   */
+  public function testRequirementsForSourcePlugin() {
+    $migration = new TestMigration();
+
+    $source_plugin = $this->getMock('Drupal\Tests\migrate\Unit\RequirementsAwareSourceInterface');
+    $source_plugin->expects($this->once())
+      ->method('checkRequirements')
+      ->willThrowException(new RequirementsException('Missing source requirement', ['key' => 'value']));
+    $destination_plugin = $this->getMock('Drupal\Tests\migrate\Unit\RequirementsAwareDestinationInterface');
+
+    $migration->setSourcePlugin($source_plugin);
+    $migration->setDestinationPlugin($destination_plugin);
+
+    $this->setExpectedException(RequirementsException::class, 'Missing source requirement');
+    $migration->checkRequirements();
+  }
+
+  /**
+   * Tests checking requirements for destination plugins.
+   *
+   * @covers ::checkRequirements
+   */
+  public function testRequirementsForDestinationPlugin() {
+    $migration = new TestMigration();
+
+    $source_plugin = $this->getMock('Drupal\migrate\Plugin\MigrateSourceInterface');
+    $destination_plugin = $this->getMock('Drupal\Tests\migrate\Unit\RequirementsAwareDestinationInterface');
+    $destination_plugin->expects($this->once())
+      ->method('checkRequirements')
+      ->willThrowException(new RequirementsException('Missing destination requirement', ['key' => 'value']));
+
+    $migration->setSourcePlugin($source_plugin);
+    $migration->setDestinationPlugin($destination_plugin);
+
+    $this->setExpectedException(RequirementsException::class, 'Missing destination requirement');
+    $migration->checkRequirements();
+  }
+
+  /**
+   * Tests checking requirements for destination plugins.
+   *
+   * @covers ::checkRequirements
+   */
+  public function testRequirementsForMigrations() {
+    $migration = new TestMigration();
+
+    // Setup source and destination plugins without any requirements.
+    $source_plugin = $this->getMock('Drupal\migrate\Plugin\MigrateSourceInterface');
+    $destination_plugin = $this->getMock('Drupal\migrate\Plugin\MigrateDestinationInterface');
+    $migration->setSourcePlugin($source_plugin);
+    $migration->setDestinationPlugin($destination_plugin);
+
+    $plugin_manager = $this->getMock('Drupal\migrate\Plugin\MigrationPluginManagerInterface');
+    $migration->setMigrationPluginManager($plugin_manager);
+
+    // We setup the requirements that test_a doesn't exist and test_c is not
+    // completed yet.
+    $migration->setRequirements(['test_a', 'test_b', 'test_c', 'test_d']);
+
+    $migration_b = $this->getMock(MigrationInterface::class);
+    $migration_c = $this->getMock(MigrationInterface::class);
+    $migration_d = $this->getMock(MigrationInterface::class);
+
+    $migration_b->expects($this->once())
+      ->method('allRowsProcessed')
+      ->willReturn(TRUE);
+    $migration_c->expects($this->once())
+      ->method('allRowsProcessed')
+      ->willReturn(FALSE);
+    $migration_d->expects($this->once())
+      ->method('allRowsProcessed')
+      ->willReturn(TRUE);
+
+    $plugin_manager->expects($this->once())
+      ->method('createInstances')
+      ->with(['test_a', 'test_b', 'test_c', 'test_d'])
+      ->willReturn(['test_b' => $migration_b, 'test_c' => $migration_c, 'test_d' => $migration_d]);
+
+    $this->setExpectedException(RequirementsException::class, 'Missing migrations test_a, test_c');
+    $migration->checkRequirements();
+  }
+
+}
+
+/**
+ * Defines the TestMigration class.
+ */
+class TestMigration extends Migration {
+
+  /**
+   * Constructs an instance of TestMigration object.
+   */
+  public function __construct() {
+  }
+
+  /**
+   * Sets the requirements values.
+   *
+   * @param array $requirements
+   *   The array of requirement values.
+   */
+  public function setRequirements(array $requirements) {
+    $this->requirements = $requirements;
+  }
+
+  /**
+   * Sets the source Plugin.
+   *
+   * @param \Drupal\migrate\Plugin\MigrateSourceInterface $source_plugin
+   *   The source Plugin.
+   */
+  public function setSourcePlugin(MigrateSourceInterface $source_plugin) {
+    $this->sourcePlugin = $source_plugin;
+  }
+
+  /**
+   * Sets the destination Plugin.
+   *
+   * @param \Drupal\migrate\Plugin\MigrateDestinationInterface $destination_plugin
+   *   The destination Plugin.
+   */
+  public function setDestinationPlugin(MigrateDestinationInterface $destination_plugin) {
+    $this->destinationPlugin = $destination_plugin;
+  }
+
+  /**
+   * Sets the plugin manager service.
+   *
+   * @param \Drupal\migrate\Plugin\MigrationPluginManagerInterface $plugin_manager
+   *   The plugin manager service.
+   */
+  public function setMigrationPluginManager(MigrationPluginManagerInterface $plugin_manager) {
+    $this->migrationPluginManager = $plugin_manager;
+  }
+
+}
+
+/**
+ * Defines the RequirementsAwareSourceInterface.
+ */
+interface RequirementsAwareSourceInterface extends MigrateSourceInterface, RequirementsInterface {}
+
+/**
+ * Defines the RequirementsAwareDestinationInterface.
+ */
+interface RequirementsAwareDestinationInterface extends MigrateDestinationInterface, RequirementsInterface {}