Security update for Core, with self-updated composer

[yaffs-website] / web / core / tests / Drupal / KernelTests / Core / Cache / DatabaseBackendTest.php

diff --git a/web/core/tests/Drupal/KernelTests/Core/Cache/DatabaseBackendTest.php b/web/core/tests/Drupal/KernelTests/Core/Cache/DatabaseBackendTest.php
index de8bbda55396e64edd326b18ccad3a40992fccfa..358b92530c6f75ca6014c07388f6fe2de0c3fa91 100644 (file)
--- a/web/core/tests/Drupal/KernelTests/Core/Cache/DatabaseBackendTest.php
+++ b/web/core/tests/Drupal/KernelTests/Core/Cache/DatabaseBackendTest.php
@@ -11,6 +11,13 @@ use Drupal\Core\Cache\DatabaseBackend;
  */
 class DatabaseBackendTest extends GenericCacheBackendUnitTestBase {
 
+  /**
+   * The max rows to use for test bins.
+   *
+   * @var int
+   */
+  protected static $maxRows = 100;
+
   /**
    * Modules to enable.
    *
@@ -25,7 +32,7 @@ class DatabaseBackendTest extends GenericCacheBackendUnitTestBase {
    *   A new DatabaseBackend object.
    */
   protected function createCacheBackend($bin) {
-    return new DatabaseBackend($this->container->get('database'), $this->container->get('cache_tags.invalidator.checksum'), $bin);
+    return new DatabaseBackend($this->container->get('database'), $this->container->get('cache_tags.invalidator.checksum'), $bin, static::$maxRows);
   }
 
   /**
@@ -40,12 +47,60 @@ class DatabaseBackendTest extends GenericCacheBackendUnitTestBase {
     $cid_long = str_repeat('愛€', 500);
     $cached_value_long = $this->randomMachineName();
     $backend->set($cid_long, $cached_value_long);
-    $this->assertIdentical($cached_value_long, $backend->get($cid_long)->data, "Backend contains the correct value for long, non-ASCII cache id.");
+    $this->assertSame($cached_value_long, $backend->get($cid_long)->data, "Backend contains the correct value for long, non-ASCII cache id.");
 
     $cid_short = '愛1€';
     $cached_value_short = $this->randomMachineName();
     $backend->set($cid_short, $cached_value_short);
-    $this->assertIdentical($cached_value_short, $backend->get($cid_short)->data, "Backend contains the correct value for short, non-ASCII cache id.");
+    $this->assertSame($cached_value_short, $backend->get($cid_short)->data, "Backend contains the correct value for short, non-ASCII cache id.");
+  }
+
+  /**
+   * Tests the row count limiting of cache bin database tables.
+   */
+  public function testGarbageCollection() {
+    $backend = $this->getCacheBackend();
+    $max_rows = static::$maxRows;
+
+    $this->assertSame(0, (int) $this->getNumRows());
+
+    // Fill to just the limit.
+    for ($i = 0; $i < $max_rows; $i++) {
+      // Ensure that each cache item created happens in a different millisecond,
+      // by waiting 1 ms (1000 microseconds). The garbage collection might
+      // otherwise keep less than exactly 100 records (which is acceptable for
+      // real-world cases, but not for this test).
+      usleep(1000);
+      $backend->set("test$i", $i);
+    }
+    $this->assertSame($max_rows, $this->getNumRows());
+
+    // Garbage collection has no effect.
+    $backend->garbageCollection();
+    $this->assertSame($max_rows, $this->getNumRows());
+
+    // Go one row beyond the limit.
+    $backend->set('test' . ($max_rows + 1), $max_rows + 1);
+    $this->assertSame($max_rows + 1, $this->getNumRows());
+
+    // Garbage collection removes one row: the oldest.
+    $backend->garbageCollection();
+    $this->assertSame($max_rows, $this->getNumRows());
+    $this->assertFalse($backend->get('test0'));
+  }
+
+  /**
+   * Gets the number of rows in the test cache bin database table.
+   *
+   * @return int
+   *   The number of rows in the test cache bin database table.
+   */
+  protected function getNumRows() {
+    $table = 'cache_' . $this->testBin;
+    $connection = $this->container->get('database');
+    $query = $connection->select($table);
+    $query->addExpression('COUNT(cid)', 'cid');
+    return (int) $query->execute()->fetchField();
   }
 
 }