import 'reflect-metadata';

jest.mock('universal-ga', () => {
    return {
        event: jest.fn(),
        initialize: jest.fn(),
    };
});
import * as analytics from 'universal-ga';

import {
    UniversalAnalyticsTrackingService,
} from './universal-analytics-tracking.service';

import {
    BrandSettingsInterface,
} from './../../../models/index';

const initUniversalAnalyticsTrackingService = (
    brandSettings?: BrandSettingsInterface,
) => {
    return new UniversalAnalyticsTrackingService(brandSettings);
};

describe('constructor', () => {
    test('Initializes the analytics service', () => {
        initUniversalAnalyticsTrackingService({
            universalAnalyticsToken: 'testAnalytics',
        } as BrandSettingsInterface);

        expect(analytics.initialize).toHaveBeenCalledWith(
            'testAnalytics',
        );
    });
});

describe('sendEvent', () => {
    test('Sends an event through the analytics service', () => {
        const universalAnalyticsTrackingService =
            initUniversalAnalyticsTrackingService({
                universalAnalyticsToken: 'testAnalytics',
            } as BrandSettingsInterface);
        const eventProperties: {[key: string]: string} = {
            abc: '123',
        };

        universalAnalyticsTrackingService.sendEvent({
            name: 'test',
            properties: eventProperties,
        });

        expect(analytics.event).toHaveBeenCalledWith(
            'test',
            'action',
            JSON.stringify(eventProperties),
        );
    });
});