     $this->assertFalse(og_is_member($group->gid, 'user', $user0), t('User is not a group member.'));        // Assert non-member can't view the group.       $this->drupalGet('node/' . $public_node->nid);       $this->assertResponse('000', t('Non group member can view public group node.'));       $this->drupalGet('node/' . $private_node->nid);       $this->assertResponse('000', t('Non group member can not view 