class NodeQueryAlterTest

class NodeQueryAlterTest extends NodeTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node_access_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * User with permission to view content.
     *
     * @var \Drupal\user\Entity\User|false
     */
    protected $accessUser;
    
    /**
     * User without permission to view content.
     *
     * @var \Drupal\user\Entity\User|false
     */
    protected $noAccessUser;
    
    /**
     * User without permission to view content.
     *
     * @var \Drupal\user\Entity\User
     */
    protected User $noAccessUser2;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        node_access_rebuild();
        // Create some content.
        $this->drupalCreateNode();
        $this->drupalCreateNode();
        $this->drupalCreateNode();
        $this->drupalCreateNode();
        // Create user with simple node access permission. The 'node test view'
        // permission is implemented and granted by the node_access_test module.
        $this->accessUser = $this->drupalCreateUser([
            'access content overview',
            'access content',
            'node test view',
        ]);
        $this->noAccessUser = $this->drupalCreateUser([
            'access content overview',
            'access content',
        ]);
        $this->noAccessUser2 = $this->drupalCreateUser([
            'access content overview',
            'access content',
        ]);
    }
    
    /**
     * Tests 'node_access' query alter, for user with access.
     *
     * Verifies that a non-standard table alias can be used, and that a user with
     * node access can view the nodes.
     */
    public function testNodeQueryAlterLowLevelWithAccess() : void {
        // User with access should be able to view 4 nodes.
        try {
            $query = Database::getConnection()->select('node', 'n')
                ->fields('n');
            $query->addTag('node_access');
            $query->addMetaData('op', 'view');
            $query->addMetaData('account', $this->accessUser);
            $result = $query->execute()
                ->fetchAll();
            $this->assertCount(4, $result, 'User with access can see correct nodes');
        } catch (\Exception) {
            $this->fail('Altered query is malformed');
        }
    }
    
    /**
     * Tests 'node_access' query alter with revision-enabled nodes.
     */
    public function testNodeQueryAlterWithRevisions() : void {
        // Execute a query that only deals with the 'node_revision' table.
        try {
            $query = \Drupal::entityTypeManager()->getStorage('node')
                ->getQuery();
            $result = $query->accessCheck(TRUE)
                ->allRevisions()
                ->execute();
            $this->assertCount(4, $result, 'User with access can see correct nodes');
        } catch (\Exception) {
            $this->fail('Altered query is malformed');
        }
    }
    
    /**
     * Tests 'node_access' query alter, for user without access.
     *
     * Verifies that a non-standard table alias can be used, and that a user
     * without node access cannot view the nodes.
     */
    public function testNodeQueryAlterLowLevelNoAccess() : void {
        // User without access should be able to view 0 nodes.
        try {
            $query = Database::getConnection()->select('node', 'n')
                ->fields('n');
            $query->addTag('node_access');
            $query->addMetaData('op', 'view');
            $query->addMetaData('account', $this->noAccessUser);
            $result = $query->execute()
                ->fetchAll();
            $this->assertCount(0, $result, 'User with no access cannot see nodes');
        } catch (\Exception) {
            $this->fail('Altered query is malformed');
        }
    }
    
    /**
     * Tests 'node_access' query alter, for edit access.
     *
     * Verifies that a non-standard table alias can be used, and that a user with
     * view-only node access cannot edit the nodes.
     */
    public function testNodeQueryAlterLowLevelEditAccess() : void {
        // User with view-only access should not be able to edit nodes.
        try {
            $query = Database::getConnection()->select('node', 'n')
                ->fields('n');
            $query->addTag('node_access');
            $query->addMetaData('op', 'update');
            $query->addMetaData('account', $this->accessUser);
            $result = $query->execute()
                ->fetchAll();
            $this->assertCount(0, $result, 'User with view-only access cannot edit nodes');
        } catch (\Exception $e) {
            $this->fail($e->getMessage());
            $this->fail((string) $query);
            $this->fail('Altered query is malformed');
        }
    }
    
    /**
     * Tests 'node_access' query alter override.
     *
     * Verifies that node_access_view_all_nodes() is called from
     * node_query_node_access_alter(). We do this by checking that a user who
     * normally would not have view privileges is able to view the nodes when we
     * add a record to {node_access} paired with a corresponding privilege in
     * hook_node_grants().
     */
    public function testNodeQueryAlterOverride() : void {
        $record = [
            'nid' => 0,
            'gid' => 0,
            'realm' => 'node_access_all',
            'grant_view' => 1,
            'grant_update' => 0,
            'grant_delete' => 0,
        ];
        $connection = Database::getConnection();
        $connection->insert('node_access')
            ->fields($record)
            ->execute();
        // Test that the noAccessUser still doesn't have the 'view'
        // privilege after adding the node_access record.
        drupal_static_reset('node_access_view_all_nodes');
        try {
            $query = $connection->select('node', 'n')
                ->fields('n');
            $query->addTag('node_access');
            $query->addMetaData('op', 'view');
            $query->addMetaData('account', $this->noAccessUser);
            $result = $query->execute()
                ->fetchAll();
            $this->assertCount(0, $result, 'User view privileges are not overridden');
        } catch (\Exception) {
            $this->fail('Altered query is malformed');
        }
        // Have node_test_node_grants return a node_access_all privilege,
        // to grant the noAccessUser 'view' access.  To verify that
        // node_access_view_all_nodes is properly checking the specified
        // $account instead of the current user, we will log in as
        // noAccessUser2.
        $this->drupalLogin($this->noAccessUser2);
        \Drupal::state()->set('node_access_test.no_access_uid', $this->noAccessUser
            ->id());
        drupal_static_reset('node_access_view_all_nodes');
        try {
            $query = $connection->select('node', 'n')
                ->fields('n');
            $query->addTag('node_access');
            $query->addMetaData('op', 'view');
            $query->addMetaData('account', $this->noAccessUser);
            $result = $query->execute()
                ->fetchAll();
            $this->assertCount(4, $result, 'User view privileges are overridden');
        } catch (\Exception) {
            $this->fail('Altered query is malformed');
        }
        \Drupal::state()->delete('node_access_test.no_access_uid');
    }

}