Ted Bowman
--- a/package_manager/tests/src/Traits/FixtureUtilityTrait.php
+++ b/package_manager/tests/src/Traits/FixtureUtilityTrait.php
+    if (!$create_project || !in_array($package['type'], $drupal_project_types, TRUE)) {
+      return;
+    }
+    $this->assertNotEmpty($package['install_path']);
+    $install_path = "$dir/vendor/composer/" . $package['install_path'];
+    $this->addProjectAtPath($install_path);
+  }
+
+  /**
+   * Adds a project at a path.
+   *
+   * @param string $path
+   *   The path.
+   * @param string|null $project_name
+   *   (optional) The project name. If known is specified the last part of the
+   *   path will be used.
--- a/package_manager/tests/src/Kernel/SupportedReleaseValidatorTest.php
+++ b/package_manager/tests/src/Kernel/SupportedReleaseValidatorTest.php
  public function testException(array $release_metadata, ?string $stage_fixture_dir, bool $project_in_active, array $package, array $expected_results): void {
    $this->setReleaseMetadata(['drupal' => __DIR__ . '/../../fixtures/release-history/drupal.9.8.2.xml'] + $release_metadata);

-    $listener = function (PreApplyEvent $event) use ($project_in_active, $package, $stage_fixture_dir): void {
-      if ($stage_fixture_dir) {
--- a/package_manager/tests/src/Kernel/OverwriteExistingPackagesValidatorTest.php
+++ b/package_manager/tests/src/Kernel/OverwriteExistingPackagesValidatorTest.php
    try {
      $stage->apply();
      // If no exception occurs, ensure we weren't expecting any errors.
-      $this->assertEmpty($expected_results);
+      $this->assertValidationResultsEqual($expected_results, []);
    }
    catch (StageValidationException $e) {
      $this->assertNotEmpty($expected_results);
-      $this->assertValidationResultsEqual($expected_results, $e->getResults());
    }
--- a/package_manager/tests/src/Kernel/OverwriteExistingPackagesValidatorTest.php
+++ b/package_manager/tests/src/Kernel/OverwriteExistingPackagesValidatorTest.php
   * by the 'package_manager_bypass' module.
   */
  public function testNewPackagesOverwriteExisting(): void {
-    $fixtures_dir = __DIR__ . '/../../fixtures/overwrite_existing_validation';
-    $this->copyFixtureFolderToActiveDirectory("$fixtures_dir/active");
-
+    $active_dir = $this->container->get('package_manager.path_locator')->getProjectRoot();
+    $modules_dir = "$active_dir/modules";
+    $this->addProjectAtPath("$modules_dir/module_1");
+    $this->addProjectAtPath("$modules_dir/module_2");
+    $this->addProjectAtPath("$modules_dir/module_5");
--- a/package_manager/tests/src/Kernel/SupportedReleaseValidatorTest.php
+++ b/package_manager/tests/src/Kernel/SupportedReleaseValidatorTest.php
   *
   * @param array $release_metadata
   *   Array of paths of the fake release metadata keyed by project name.
-   * @param string|null $stage_fixture_dir
-   *   Path of fixture stage directory or NULL. It will be used to fixture files
   *   to virtual stage directory when the project is not in active.
-   *   to virtual stage directory when the project is not in active.