Issue #3264122: Move all aggregator tests to the module in preperation of removal in d10

core/modules/aggregator/tests/src/Functional/migrate_drupal_ui/d6/NodeClassicTest.php

+<?php
+
+namespace Drupal\Tests\aggregator\Functional\migrate_drupal_ui\d6;
+
+use Drupal\migrate_drupal\NodeMigrateType;
+use Drupal\Tests\migrate_drupal\Traits\NodeMigrateTypeTestTrait;
+use Drupal\Tests\migrate_drupal_ui\Functional\MigrateUpgradeExecuteTestBase;
+
+/**
+ * Tests the classic node migration runs for the aggregator module.
+ *
+ * The classic node migration will run and not the complete node migration
+ * when there is a pre-existing classic node migrate map table.
+ *
+ * @group aggregator
+ */
+class NodeClassicTest extends MigrateUpgradeExecuteTestBase {
+
+  use NodeMigrateTypeTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'aggregator',
+    'migrate_drupal_ui',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    parent::setUp();
+    $this->loadFixture($this->getModulePath('migrate_drupal') . '/tests/fixtures/drupal6.php');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getSourceBasePath() {
+    return __DIR__ . '/files';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntityCounts() {
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntityCountsIncremental() {
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getAvailablePaths() {
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getMissingPaths() {
+  }
+
+  /**
+   * Tests node classic migration via the UI.
+   */
+  public function testNodeClassicUpgrade() {
+    // Add a node classic migrate table to d8.
+    $this->makeNodeMigrateMapTable(NodeMigrateType::NODE_MIGRATE_TYPE_CLASSIC, '6');
+
+    // Start the upgrade process.
+    $this->submitCredentialForm();
+
+    // Confirm there are only classic node migration map tables. This shows
+    // that only the classic migration will run.
+    $results = $this->nodeMigrateMapTableCount('6');
+    $this->assertSame(14, $results['node']);
+    $this->assertSame(0, $results['node_complete']);
+  }
+
+}