class NodeRevisionPermissionsTest

class NodeRevisionPermissionsTest extends NodeTestBase {
    use GeneratePermutationsTrait;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * The node revisions.
     *
     * @var array
     */
    protected $nodeRevisions = [];
    
    /**
     * The accounts.
     *
     * @var array
     */
    protected $accounts = [];
    // Map revision permission names to node revision access ops.
    protected $map = [
        'view' => 'view all revisions',
        'update' => 'revert all revisions',
        'delete' => 'delete all revisions',
    ];
    // Map revision permission names to node type revision access ops.
    protected $typeMap = [
        'view' => 'view page revisions',
        'update' => 'revert page revisions',
        'delete' => 'delete page revisions',
    ];
    protected function setUp() {
        parent::setUp();
        $types = [
            'page',
            'article',
        ];
        foreach ($types as $type) {
            // Create a node with several revisions.
            $nodes[$type] = $this->drupalCreateNode([
                'type' => $type,
            ]);
            $this->nodeRevisions[$type][] = $nodes[$type];
            for ($i = 0; $i < 3; $i++) {
                // Create a revision for the same nid and settings with a random log.
                $revision = clone $nodes[$type];
                $revision->setNewRevision();
                $revision->revision_log = $this->randomMachineName(32);
                $revision->save();
                $this->nodeRevisions[$type][] = $revision;
            }
        }
    }
    
    /**
     * Tests general revision access permissions.
     */
    public function testNodeRevisionAccessAnyType() {
        // Create three users, one with each revision permission.
        foreach ($this->map as $op => $permission) {
            // Create the user.
            $account = $this->drupalCreateUser([
                'access content',
                'edit any page content',
                'delete any page content',
                $permission,
            ]);
            $account->op = $op;
            $this->accounts[] = $account;
        }
        // Create an admin account (returns TRUE for all revision permissions).
        $admin_account = $this->drupalCreateUser([
            'access content',
            'administer nodes',
        ]);
        $admin_account->is_admin = TRUE;
        $this->accounts['admin'] = $admin_account;
        $accounts['admin'] = $admin_account;
        // Create a normal account (returns FALSE for all revision permissions).
        $normal_account = $this->drupalCreateUser();
        $normal_account->op = FALSE;
        $this->accounts[] = $normal_account;
        $accounts[] = $normal_account;
        $revision = $this->nodeRevisions['page'][1];
        $parameters = [
            'op' => array_keys($this->map),
            'account' => $this->accounts,
        ];
        $permutations = $this->generatePermutations($parameters);
        $node_revision_access = \Drupal::service('access_check.node.revision');
        $connection = \Drupal::database();
        foreach ($permutations as $case) {
            // Skip this test if there are no revisions for the node.
            if (!($revision->isDefaultRevision() && ($connection->query('SELECT COUNT(vid) FROM {node_field_revision} WHERE nid = :nid', [
                ':nid' => $revision->id(),
            ])
                ->fetchField() == 1 || $case['op'] == 'update' || $case['op'] == 'delete'))) {
                if (!empty($case['account']->is_admin) || $case['account']->hasPermission($this->map[$case['op']])) {
                    $this->assertTrue($node_revision_access->checkAccess($revision, $case['account'], $case['op']), "{$this->map[$case['op']]} granted.");
                }
                else {
                    $this->assertFalse($node_revision_access->checkAccess($revision, $case['account'], $case['op']), "{$this->map[$case['op']]} not granted.");
                }
            }
        }
        // Test that access is FALSE for a node administrator with an invalid $node
        // or $op parameters.
        $admin_account = $accounts['admin'];
        $this->assertFalse($node_revision_access->checkAccess($revision, $admin_account, 'invalid-op'), 'NodeRevisionAccessCheck() returns FALSE with an invalid op.');
    }
    
    /**
     * Tests revision access permissions for a specific content type.
     */
    public function testNodeRevisionAccessPerType() {
        // Create three users, one with each revision permission.
        foreach ($this->typeMap as $op => $permission) {
            // Create the user.
            $account = $this->drupalCreateUser([
                'access content',
                'edit any page content',
                'delete any page content',
                $permission,
            ]);
            $account->op = $op;
            $accounts[] = $account;
        }
        $parameters = [
            'op' => array_keys($this->typeMap),
            'account' => $accounts,
        ];
        // Test that the accounts have access to the corresponding page revision
        // permissions.
        $revision = $this->nodeRevisions['page'][1];
        $permutations = $this->generatePermutations($parameters);
        $node_revision_access = \Drupal::service('access_check.node.revision');
        $connection = \Drupal::database();
        foreach ($permutations as $case) {
            // Skip this test if there are no revisions for the node.
            if (!($revision->isDefaultRevision() && ($connection->query('SELECT COUNT(vid) FROM {node_field_revision} WHERE nid = :nid', [
                ':nid' => $revision->id(),
            ])
                ->fetchField() == 1 || $case['op'] == 'update' || $case['op'] == 'delete'))) {
                if (!empty($case['account']->is_admin) || $case['account']->hasPermission($this->typeMap[$case['op']])) {
                    $this->assertTrue($node_revision_access->checkAccess($revision, $case['account'], $case['op']), "{$this->typeMap[$case['op']]} granted.");
                }
                else {
                    $this->assertFalse($node_revision_access->checkAccess($revision, $case['account'], $case['op']), "{$this->typeMap[$case['op']]} not granted.");
                }
            }
        }
        // Test that the accounts have no access to the article revisions.
        $revision = $this->nodeRevisions['article'][1];
        foreach ($permutations as $case) {
            $this->assertFalse($node_revision_access->checkAccess($revision, $case['account'], $case['op']), "{$this->typeMap[$case['op']]} did not grant revision permission for articles.");
        }
    }

}