diff core/modules/dblog/tests/src/Kernel/DbLogTest.php @ 17:129ea1e6d783

Update, including to Drupal core 8.6.10

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/dblog/tests/src/Kernel/DbLogTest.php	Thu Feb 28 13:21:36 2019 +0000
@@ -0,0 +1,77 @@
+<?php
+
+namespace Drupal\Tests\dblog\Kernel;
+
+use Drupal\KernelTests\KernelTestBase;
+use Drupal\Tests\dblog\Functional\FakeLogEntries;
+
+/**
+ * Generate events and verify dblog entries.
+ *
+ * @group dblog
+ */
+class DbLogTest extends KernelTestBase {
+
+  use FakeLogEntries;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = ['dblog', 'system'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installSchema('dblog', ['watchdog']);
+    $this->installSchema('system', ['key_value_expire', 'sequences']);
+    $this->installConfig(['system']);
+  }
+
+  /**
+   * Tests that cron correctly applies the database log row limit.
+   */
+  public function testDbLogCron() {
+    $row_limit = 100;
+    // Generate additional log entries.
+    $this->generateLogEntries($row_limit + 10);
+    // Verify that the database log row count exceeds the row limit.
+    $count = db_query('SELECT COUNT(wid) FROM {watchdog}')->fetchField();
+    $this->assertGreaterThan($row_limit, $count, format_string('Dblog row count of @count exceeds row limit of @limit', ['@count' => $count, '@limit' => $row_limit]));
+
+    // Get the number of enabled modules. Cron adds a log entry for each module.
+    $list = $this->container->get('module_handler')->getImplementations('cron');
+    $module_count = count($list);
+    $cron_detailed_count = $this->runCron();
+    $this->assertEquals($module_count + 2, $cron_detailed_count, format_string('Cron added @count of @expected new log entries', ['@count' => $cron_detailed_count, '@expected' => $module_count + 2]));
+
+    // Test disabling of detailed cron logging.
+    $this->config('system.cron')->set('logging', 0)->save();
+    $cron_count = $this->runCron();
+    $this->assertEquals(1, $cron_count, format_string('Cron added @count of @expected new log entries', ['@count' => $cron_count, '@expected' => 1]));
+  }
+
+  /**
+   * Runs cron and returns number of new log entries.
+   *
+   * @return int
+   *   Number of new watchdog entries.
+   */
+  private function runCron() {
+    // Get last ID to compare against; log entries get deleted, so we can't
+    // reliably add the number of newly created log entries to the current count
+    // to measure number of log entries created by cron.
+    $last_id = db_query('SELECT MAX(wid) FROM {watchdog}')->fetchField();
+
+    // Run a cron job.
+    $this->container->get('cron')->run();
+
+    // Get last ID after cron was run.
+    $current_id = db_query('SELECT MAX(wid) FROM {watchdog}')->fetchField();
+
+    return $current_id - $last_id;
+  }
+
+}