     $this->assertTrue(og_is_member($group->gid, 'user', $user0), t('User is a group member.'));       $this->drupalGet('node/' . $public_node->nid);       $this->assertResponse('000', t('Group member can view public group node.'));       $this->drupalGet('node/' . $private_node->nid);       $this->assertResponse('000', t('Group member can view p