Issue #3275323: AU Extensions: Create form workflow for updating projects

automatic_updates_extensions/tests/src/Traits/FormTestTrait.php

+<?php
+
+namespace Drupal\Tests\automatic_updates_extensions\Traits;
+
+use Behat\Mink\WebAssert;
+
+/**
+ * Common methods for testing the update form.
+ */
+trait FormTestTrait {
+
+  /**
+   * Asserts the table shows the updates.
+   *
+   * @param \Behat\Mink\WebAssert $assert
+   *   The web assert tool.
+   * @param string $expected_project_title
+   *   The expected project title.
+   * @param string $expected_installed_version
+   *   The expected installed version.
+   * @param string $expected_update_version
+   *   The expected update version.
+   */
+  private function assertUpdateTableRow(WebAssert $assert, string $expected_project_title, string $expected_installed_version, string $expected_update_version): void {
+    $assert->elementTextContains('css', '.update-recommended td:nth-of-type(2)', $expected_project_title);
+    $assert->elementTextContains('css', '.update-recommended td:nth-of-type(3)', $expected_installed_version);
+    $assert->elementTextContains('css', '.update-recommended td:nth-of-type(4)', $expected_update_version);
+    $assert->elementsCount('css', '.update-recommended tbody tr', 1);
+  }
+
+}