Ted Bowman
--- a/tests/src/Kernel/UpdaterTest.php 0 → 100644
+++ b/tests/src/Kernel/UpdaterTest.php 0 → 100644
+
+  /**
+   * @covers ::begin
+   *
+   * @dataProvider providerInvalidProjectVersions
+   */
+  public function testInvalidProjectVersions(array $project_versions): void {
+    $this->expectException(\InvalidArgumentException::class);
+    $this->expectExceptionMessage('Currently only updates to Drupal core are supported.');
+    $this->container->get('automatic_updates.updater')->begin($project_versions);
+  }
+
+  /**
+   * @covers ::begin
+   */
+  public function testDrupalVersionAllowed(): void {