@ledgerhq/hw-transport-mocker/lib-es/fixtures/aTransport.js

Ledger Hardware Wallet mocker utilities used for tests

import { LocalTracer } from "@ledgerhq/logs";
import EventEmitter from "events";
/**
 * Builds a fake Transport object to use in tests
 *
 * Note: no Transport methods are implemented, this is duck typing a Transport to use on unit tests where
 * the transport instance does not matter. If a specific value is expected from a method, you can pass the
 * fake method implementation to the `props` of the builder.
 *
 * If you want a working mocked Transport, you should use `MockTransport`.
 *
 * Ex:
 * ```
 * aTransportBuilder({
 *   exchange: jest.fn().mockReturnValue(Buffer.from("Test")),
 * }),
 * ```
 *
 * @param props Any value in props will override the default fake value of the same property/method
 * @return A duck-typed Transport
 */
export const aTransportBuilder = (props) => {
    return {
        exchangeTimeout: 30000,
        unresponsiveTimeout: 15000,
        deviceModel: null,
        tracer: new LocalTracer("mockedTransport", {}),
        _events: new EventEmitter(),
        exchangeBusyPromise: null,
        _appAPIlock: null,
        exchange: jest.fn(),
        exchangeBulk: jest.fn(),
        setScrambleKey: jest.fn(),
        close: jest.fn(),
        on: jest.fn(),
        off: jest.fn(),
        emit: jest.fn(),
        setDebugMode: jest.fn(),
        setExchangeTimeout: jest.fn(),
        setExchangeUnresponsiveTimeout: jest.fn(),
        send: jest.fn(),
        exchangeAtomicImpl: jest.fn(),
        decorateAppAPIMethods: jest.fn(),
        decorateAppAPIMethod: jest.fn(),
        setTraceContext: jest.fn(),
        updateTraceContext: jest.fn(),
        getTraceContext: jest.fn(),
        ...props,
    };
};
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