def METHOD_NAME(topo):
    """Test to check nsslapd-db-home-directory is set to /dev/shm/slapd-instance in defaults.inf file
    :id: 995ef963-acb1-4210-887e-803fc63e716c
    :customerscenario: True
    :setup: Standalone Instance
    :steps:
        1. Create instance
        2. Check nsslapd-db-home-directory is set to /dev/shm/slapd-instance in defaults.inf file
    :expectedresults:
        1. Success
        2. Success
    """
    standalone = topo.standalone
    if standalone.is_in_container():
        dbhome_value = 'db_home_dir = ' + standalone.db_dir
    else:
        dbhome_value = 'db_home_dir = /dev/shm/slapd-{instance_name}'
    log.info('Get defaults.inf path')
    def_loc = standalone.ds_paths._get_defaults_loc(DEFAULTS_PATH)
    log.info('Check db_home value is /dev/shm/slapd-{instance_name} in defaults.inf')
    with open(def_loc) as f:
        assert dbhome_value in f.read()