Issue #2592665 by jhedstrom, alexpott: Create RC1 database dumps

core/modules/system/src/Tests/Update/UpdatePathRC1TestBaseTest.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\system\Tests\Update\UpdatePathRC1TestBaseTest
+ */
+
+namespace Drupal\system\Tests\Update;
+
+use Drupal\Component\Render\FormattableMarkup;
+
+/**
+ * Tests the update path base class with the RC1 database dump.
+ *
+ * @group Update
+ */
+class UpdatePathRC1TestBaseTest extends UpdatePathTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = ['update_test_schema'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setDatabaseDumpFiles() {
+    $this->databaseDumpFiles = [
+      __DIR__ . '/../../../tests/fixtures/update/drupal-8-rc1.bare.standard.php.gz',
+    ];
+  }
+
+  /**
+   * Tests that the database was properly loaded.
+   */
+  public function testDatabaseLoaded() {
+    $hook_updates = [
+      'user' => '8000',
+      'node' => '8003',
+      'system' => '8013',
+    ];
+    foreach ($hook_updates as $module => $schema) {
+      $this->assertEqual(drupal_get_installed_schema_version($module), $schema, new FormattableMarkup('Module @module schema is @schema', ['@module' => $module, '@schema' => $schema]));
+    }
+
+    // Test post_update key value stores contains a list of the update functions
+    // that have run.
+    $existing_updates = array_count_values(\Drupal::keyValue('post_update')->get('existing_updates'));
+    $expected_updates = [
+      'system_post_update_recalculate_configuration_entity_dependencies',
+      'field_post_update_save_custom_storage_property',
+      'field_post_update_entity_reference_handler_setting',
+      'block_post_update_disable_blocks_with_missing_contexts',
+      'views_post_update_update_cacheability_metadata',
+    ];
+    foreach ($expected_updates as $expected_update) {
+      $this->assertEqual($existing_updates[$expected_update], 1, new FormattableMarkup("@expected_update exists in 'existing_updates' key and only appears once.", ['@expected_update' => $expected_update]));
+    }
+
+    // @todo there are no updates to run.
+    // $this->runUpdates();
+    $this->assertEqual(\Drupal::config('system.site')->get('name'), 'Site-Install');
+    $this->drupalGet('<front>');
+    $this->assertText('Site-Install');
+  }
+
+}