Function assert_fee_structure

python/ccxt/test/exchange/base/test_shared_methods.py:286–305

(exchange, skipped_properties, method, entry, key, allow_null=True)

def assert_fee_structure(exchange, skipped_properties, method, entry, key, allow_null=True):
    log_text = log_template(exchange, method, entry)
    key_string = string_value(key)
    if isinstance(key, int):
        assert isinstance(entry, list), 'fee container is expected to be an array' + log_text
        assert key < len(entry), 'fee key ' + key_string + ' was expected to be present in entry' + log_text
    else:
        assert exchange.is_dictionary(entry), 'fee container is expected to be a dict' + log_text
        assert key in entry, 'fee key "' + key + '" was expected to be present in entry' + log_text
    fee_object = exchange.safe_value(entry, key)
    assert fee_object is not None or allow_null, 'fee object is null' + log_text
    # todo: remove undefined check to make stricter
    if fee_object is not None:
        assert 'cost' in fee_object, key_string + ' fee object should contain "cost" key' + log_text
        if fee_object['cost'] is None:
            return   # todo: remove undefined check to make stricter
        assert isinstance(fee_object['cost'], numbers.Real), key_string + ' "cost" must be numeric type' + log_text
        # assertGreaterOrEqual (exchange, skippedProperties, method, feeObject, 'cost', '0'); # fee might be negative in the case of a rebate or reward
        assert 'currency' in fee_object, '"' + key_string + '" fee object should contain "currency" key' + log_text
        assert_currency_code(exchange, skipped_properties, method, entry, fee_object['currency'])


def assert_timestamp_order(exchange, method, code_or_symbol, items, ascending=True):