ibapi 5.4.0

An unofficial Rust client for the Interactive Brokers TWS API: market data, orders, and account data, with async (Tokio) and blocking clients for TWS and IB Gateway.
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use super::*;
use crate::common::test_utils::helpers::constants::TEST_REQ_ID_FIRST;
use crate::common::test_utils::helpers::{assert_request, proto_response, request_message_count};
use crate::messages::IncomingMessages;
use crate::server_versions;
use crate::stubs::MessageBusStub;
use crate::subscriptions::SubscriptionItem;
use crate::testdata::builders::display_groups::{
    display_group_list, display_group_updated, query_display_groups_request, subscribe_to_group_events_request, update_display_group_request,
};
use crate::testdata::builders::ResponseProtoEncoder;
use std::sync::Arc;

fn display_group_update_response(contract_info: &str) -> crate::messages::ResponseMessage {
    let bytes = display_group_updated().contract_info(contract_info).encode_proto();
    proto_response(IncomingMessages::DisplayGroupUpdated, bytes)
}

fn stubbed_subscription(responses: Vec<crate::messages::ResponseMessage>) -> (Arc<MessageBusStub>, DisplayGroupSubscription) {
    let message_bus = Arc::new(MessageBusStub::with_ordered_responses(responses));
    let client = Client::stubbed(message_bus.clone(), server_versions::PROTOBUF_REST_MESSAGES_3);
    let subscription = client.subscribe_to_group_events(1).expect("failed to subscribe");
    (message_bus, subscription)
}

fn assert_first_data_eq(item: Option<Result<SubscriptionItem<DisplayGroupUpdate>, Error>>, expected_contract_info: &str) {
    let Some(Ok(SubscriptionItem::Data(update))) = item else {
        panic!("expected Data");
    };
    assert_eq!(update.contract_info, expected_contract_info);
}

#[test]
fn display_groups() {
    let message_bus = Arc::new(MessageBusStub::with_ordered_responses(vec![proto_response(
        IncomingMessages::DisplayGroupList,
        display_group_list().request_id(TEST_REQ_ID_FIRST).groups("3|1|2").encode_proto(),
    )]));
    let client = Client::stubbed(message_bus.clone(), server_versions::PROTOBUF_REST_MESSAGES_3);

    let groups = client.display_groups().expect("display_groups failed");
    assert_eq!(groups, vec![3, 1, 2]);
    assert_eq!(request_message_count(&message_bus), 1);
    assert_request(&message_bus, 0, &query_display_groups_request().request_id(TEST_REQ_ID_FIRST));
}

#[test]
fn update_display_group() {
    let (message_bus, subscription) = stubbed_subscription(vec![display_group_update_response("265598@SMART")]);
    subscription.update("265598@SMART").expect("update failed");

    assert_eq!(request_message_count(&message_bus), 2);
    assert_request(
        &message_bus,
        0,
        &subscribe_to_group_events_request().request_id(TEST_REQ_ID_FIRST).group_id(1),
    );
    assert_request(
        &message_bus,
        1,
        &update_display_group_request().request_id(TEST_REQ_ID_FIRST).contract_info("265598@SMART"),
    );
}

#[test]
fn subscription_derefs_to_inner_for_next() {
    let (_bus, subscription) = stubbed_subscription(vec![display_group_update_response("265598@SMART")]);
    assert_first_data_eq(subscription.next(), "265598@SMART");
}

#[test]
fn borrowed_into_iter_yields_subscription_items() {
    let (_bus, subscription) = stubbed_subscription(vec![display_group_update_response("265598@SMART")]);
    assert_first_data_eq((&subscription).into_iter().next(), "265598@SMART");
}

#[test]
fn owned_into_iter_consumes_subscription() {
    let (_bus, subscription) = stubbed_subscription(vec![display_group_update_response("265598@SMART")]);
    assert_first_data_eq(subscription.into_iter().next(), "265598@SMART");
}