def METHOD_NAME():
    """
    Testing case when token still not expired actually, but refresh_token_safe_delta check is not passed
    """
    def fake__init__(self, **kwargs):
        expires_in = 100 + source_bing_ads.client.Client.refresh_token_safe_delta / 2
        self.oauth = OAuthTokens(access_token_expires_in_seconds=expires_in)
        self.oauth._access_token_received_datetime = datetime.utcnow() - timedelta(seconds=100)
    with mock.patch.object(source_bing_ads.client.Client, "__init__", fake__init__):
        client = source_bing_ads.client.Client()
        assert client.is_token_expiring() is True