redioactive/dist/__tests__/pause.spec.js

Reactive streams for chaining overlapping promises.

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const redio_1 = __importStar(require("../redio"));
describe('Stream pausing', () => {
    test('Pause a stream', async () => {
        let pauseCount = 0;
        await expect((0, redio_1.default)([1, 2, 3, 4, 5])
            .pause((t) => {
            if ((0, redio_1.isValue)(t)) {
                const doPause = t > 2 && pauseCount < 3;
                if (doPause)
                    pauseCount++;
                return doPause;
            }
            else
                return false;
        })
            .toArray()).resolves.toEqual([1, 2, 3, 3, 3, 3, 4, 5]);
    });
    test('Pause with slow speed input stream', async () => {
        const wait = async (t) => new Promise((r) => setTimeout(() => r(t), t * 5));
        function addWait(n) {
            let count = 0;
            return async () => (count < n ? await wait(++count) : redio_1.end);
        }
        let pauseCount = 0;
        await expect((0, redio_1.default)(addWait(5))
            .pause((t) => {
            if ((0, redio_1.isValue)(t)) {
                const doPause = t > 2 && pauseCount < 3;
                if (doPause)
                    pauseCount++;
                return doPause;
            }
            else
                return false;
        })
            .toArray()).resolves.toEqual([1, 2, 3, 3, 3, 3, 4, 5]);
    });
    test('Pause with slow speed output stream', async () => {
        let pauseCount = 0;
        await expect((0, redio_1.default)([1, 2, 3, 4, 5])
            .pause((t) => {
            if ((0, redio_1.isValue)(t)) {
                const doPause = t > 2 && pauseCount < 3;
                if (doPause)
                    pauseCount++;
                return doPause;
            }
            else
                return false;
        })
            .valve(async (v) => {
            if ((0, redio_1.isValue)(v)) {
                return new Promise((resolve) => {
                    setTimeout(() => resolve(v), 10);
                });
            }
            else
                return v;
        })
            .toArray()).resolves.toEqual([1, 2, 3, 3, 3, 3, 4, 5]);
    });
});