function AliasTest::testPrefixListCacheDeletionMidRequest

Tests situation where the prefix list cache is deleted mid-request.

File

core/modules/path_alias/tests/src/Kernel/AliasTest.php, line 424

Class

AliasTest

Tests path alias CRUD and lookup functionality.

Namespace

Code

public function testPrefixListCacheDeletionMidRequest() {
  $memoryCounterBackend = new MemoryCounterBackend(\Drupal::service(TimeInterface::class));
  // Create AliasManager and Path object.
  $prefix_list = new AliasPrefixList('path_alias_prefix_list', $memoryCounterBackend, $this->container
    ->get('lock'), $this->container
    ->get('state'), $this->container
    ->get('path_alias.repository'));
  // Prefix list cache should not exist at all yet.
  $this->assertFalse($memoryCounterBackend->get('path_alias_prefix_list'));
  // Add some aliases for both menu routes we have.
  $this->createPathAlias('/admin/something', '/' . $this->randomMachineName());
  $this->createPathAlias('/user/something', '/' . $this->randomMachineName());
  // Lookup admin path in prefix list. It will query the DB and figure out
  // that it indeed has an alias, and add it to the internal prefix list and
  // flag it to be persisted to cache.
  $this->assertTrue($prefix_list->get('admin'));
  // Destruct the prefix list so it persists its cache.
  $prefix_list->destruct();
  $this->assertEquals(1, $memoryCounterBackend->getCounter('set', 'path_alias_prefix_list'));
  // Cache data should have data for 'user' and 'admin', even though just
  // 'admin' was looked up. This is because the cache is primed with all
  // menu router base paths.
  $this->assertEquals([
    'user' => FALSE,
    'admin' => TRUE,
  ], $memoryCounterBackend->get('path_alias_prefix_list')->data);
  $memoryCounterBackend->resetCounter();
  // Re-initialize the prefix list and lookup an alias for the 'user' path.
  // Prefix list should load data from its cache, see that it hasn't done a
  // check for 'user' yet, perform the check, then mark the result to be
  // persisted to cache.
  $prefix_list = new AliasPrefixList('path_alias_prefix_list', $memoryCounterBackend, $this->container
    ->get('lock'), $this->container
    ->get('state'), $this->container
    ->get('path_alias.repository'));
  $this->assertTrue($prefix_list->get('user'));
  // Delete the prefix list cache. This could happen from an outside process,
  // like a code deployment that performs a cache rebuild.
  $memoryCounterBackend->delete('path_alias_prefix_list');
  // Destruct prefix list so it attempts to save the prefix list data to
  // cache. However it should recognize that the previous cache entry was
  // deleted from underneath it and not save anything to cache, to protect
  // from cache corruption.
  $prefix_list->destruct();
  $this->assertEquals(0, $memoryCounterBackend->getCounter('set', 'path_alias_prefix_list'));
  $this->assertFalse($memoryCounterBackend->get('path_alias_prefix_list'));
  $memoryCounterBackend->resetCounter();
}