vitest-marbles/lib/src/marblizer.js

Marble testing helpers library for RxJs and Jest

import { MarblesGlossary } from './marbles-glossary';
import { NotificationEvent } from './notification-event';
import { NotificationKindChars, ValueLiteral } from './notification-kind';
var frameStep = 10;
var Marblizer = /** @class */ (function () {
    function Marblizer() {
    }
    Marblizer.marblize = function (messages) {
        var emissions = Marblizer.getNotificationEvents(messages);
        var marbles = '';
        for (var i = 0, prevEndFrame = 0; i < emissions.length; prevEndFrame = emissions[i].end, i++) {
            marbles = "".concat(marbles).concat(MarblesGlossary.TimeFrame.repeat(emissions[i].start - prevEndFrame) +
                emissions[i].marbles);
        }
        return marbles;
    };
    Marblizer.marblizeSubscriptions = function (logs) {
        var _this = this;
        return logs.map(function (log) {
            return _this.marblizeLogEntry(log.subscribedFrame / frameStep, MarblesGlossary.Subscription) +
                _this.marblizeLogEntry((log.unsubscribedFrame - log.subscribedFrame) / frameStep - 1, MarblesGlossary.Unsubscription);
        });
    };
    Marblizer.marblizeLogEntry = function (logPoint, symbol) {
        if (logPoint !== Infinity) {
            return MarblesGlossary.TimeFrame.repeat(logPoint) + symbol;
        }
        else {
            return '';
        }
    };
    Marblizer.getNotificationEvents = function (messages) {
        var framesToEmissions = messages.reduce(function (result, message) {
            if (!result[message.frame]) {
                result[message.frame] = new NotificationEvent(message.frame / frameStep);
            }
            var event = result[message.frame];
            event.marbles += Marblizer.extractMarble(message);
            return result;
        }, {});
        var events = Object.keys(framesToEmissions).map(function (frame) { return framesToEmissions[frame]; });
        Marblizer.encloseGroupEvents(events);
        return events;
    };
    Marblizer.extractMarble = function (message) {
        var marble = NotificationKindChars[message.notification.kind];
        if (marble === ValueLiteral)
            marble = message.notification.value;
        return marble;
    };
    Marblizer.encloseGroupEvents = function (events) {
        events.forEach(function (event) {
            if (event.marbles.length > 1) {
                event.marbles = "".concat(MarblesGlossary.GroupStart).concat(event.marbles).concat(MarblesGlossary.GroupEnd);
            }
        });
    };
    return Marblizer;
}());
export { Marblizer };
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