Ghost/ghost/member-attribution/test/event-handler.test.js

// Switch these lines once there are useful utils
// const testUtils = require('./utils');
require('./utils');
const {MemberCreatedEvent, SubscriptionCreatedEvent} = require('@tryghost/member-events');
const MemberAttributionEventHandler = require('../lib/event-handler');

describe('MemberAttributionEventHandler', function () {
    describe('Constructor', function () {
        it('doesn\'t throw', function () {
            new MemberAttributionEventHandler({});
        });
    });

    describe('MemberCreatedEvent handling', function () {
        it('defaults to external for missing attributions', function () {
            const DomainEvents = {
                subscribe: (type, handler) => {
                    if (type === MemberCreatedEvent) {
                        handler(MemberCreatedEvent.create({
                            memberId: '123',
                            source: 'test'
                        }, new Date(0)));
                    }
                }
            };

            const MemberCreatedEventModel = {add: sinon.stub()};
            const labsService = {isSet: sinon.stub().returns(true)};
            const subscribeSpy = sinon.spy(DomainEvents, 'subscribe');
            const eventHandler = new MemberAttributionEventHandler({
                DomainEvents,
                MemberCreatedEvent: MemberCreatedEventModel,
                labsService
            });
            eventHandler.subscribe();
            sinon.assert.calledOnceWithMatch(MemberCreatedEventModel.add, {
                member_id: '123',
                created_at: new Date(0),
                source: 'test'
            });
            sinon.assert.calledTwice(subscribeSpy);
        });

        it('passes custom attributions', function () {
            const DomainEvents = {
                subscribe: (type, handler) => {
                    if (type === MemberCreatedEvent) {
                        handler(MemberCreatedEvent.create({
                            memberId: '123',
                            source: 'test',
                            attribution: {
                                id: '123',
                                type: 'post',
                                url: 'url'
                            }
                        }, new Date(0)));
                    }
                }
            };

            const MemberCreatedEventModel = {add: sinon.stub()};
            const labsService = {isSet: sinon.stub().returns(true)};
            const subscribeSpy = sinon.spy(DomainEvents, 'subscribe');
            const eventHandler = new MemberAttributionEventHandler({
                DomainEvents,
                MemberCreatedEvent: MemberCreatedEventModel,
                labsService
            });
            eventHandler.subscribe();
            sinon.assert.calledOnceWithMatch(MemberCreatedEventModel.add, {
                member_id: '123',
                created_at: new Date(0),
                attribution_id: '123',
                attribution_type: 'post',
                attribution_url: 'url',
                source: 'test'
            });
            sinon.assert.calledTwice(subscribeSpy);
        });

        it('filters if disabled', function () {
            const DomainEvents = {
                subscribe: (type, handler) => {
                    if (type === MemberCreatedEvent) {
                        handler(MemberCreatedEvent.create({
                            memberId: '123',
                            source: 'test',
                            attribution: {
                                id: '123',
                                type: 'post',
                                url: 'url'
                            }
                        }, new Date(0)));
                    }
                }
            };

            const MemberCreatedEventModel = {add: sinon.stub()};
            const labsService = {isSet: sinon.stub().returns(false)};
            const subscribeSpy = sinon.spy(DomainEvents, 'subscribe');
            const eventHandler = new MemberAttributionEventHandler({
                DomainEvents,
                MemberCreatedEvent: MemberCreatedEventModel,
                labsService
            });
            eventHandler.subscribe();
            sinon.assert.calledOnceWithMatch(MemberCreatedEventModel.add, {
                member_id: '123',
                created_at: new Date(0),
                attribution_id: null,
                attribution_type: null,
                attribution_url: null,
                source: 'test'
            });
            sinon.assert.calledTwice(subscribeSpy);
        });
    });

    describe('SubscriptionCreatedEvent handling', function () {
        it('defaults to external for missing attributions', function () {
            const DomainEvents = {
                subscribe: (type, handler) => {
                    if (type === SubscriptionCreatedEvent) {
                        handler(SubscriptionCreatedEvent.create({
                            memberId: '123',
                            subscriptionId: '456'
                        }, new Date(0)));
                    }
                }
            };

            const SubscriptionCreatedEventModel = {add: sinon.stub()};
            const labsService = {isSet: sinon.stub().returns(true)};
            const subscribeSpy = sinon.spy(DomainEvents, 'subscribe');
            const eventHandler = new MemberAttributionEventHandler({
                DomainEvents,
                SubscriptionCreatedEvent: SubscriptionCreatedEventModel,
                labsService
            });
            eventHandler.subscribe();
            sinon.assert.calledOnceWithMatch(SubscriptionCreatedEventModel.add, {
                member_id: '123',
                subscription_id: '456',
                created_at: new Date(0)
            });
            sinon.assert.calledTwice(subscribeSpy);
        });

        it('passes custom attributions', function () {
            const DomainEvents = {
                subscribe: (type, handler) => {
                    if (type === SubscriptionCreatedEvent) {
                        handler(SubscriptionCreatedEvent.create({
                            memberId: '123',
                            subscriptionId: '456',
                            attribution: {
                                id: '123',
                                type: 'post',
                                url: 'url'
                            }
                        }, new Date(0)));
                    }
                }
            };

            const SubscriptionCreatedEventModel = {add: sinon.stub()};
            const labsService = {isSet: sinon.stub().returns(true)};
            const subscribeSpy = sinon.spy(DomainEvents, 'subscribe');
            const eventHandler = new MemberAttributionEventHandler({
                DomainEvents,
                SubscriptionCreatedEvent: SubscriptionCreatedEventModel,
                labsService
            });
            eventHandler.subscribe();
            sinon.assert.calledOnceWithMatch(SubscriptionCreatedEventModel.add, {
                member_id: '123',
                subscription_id: '456',
                created_at: new Date(0),
                attribution_id: '123',
                attribution_type: 'post',
                attribution_url: 'url'
            });
            sinon.assert.calledTwice(subscribeSpy);
        });

        it('filters if disabled', function () {
            const DomainEvents = {
                subscribe: (type, handler) => {
                    if (type === SubscriptionCreatedEvent) {
                        handler(SubscriptionCreatedEvent.create({
                            memberId: '123',
                            subscriptionId: '456',
                            attribution: {
                                id: '123',
                                type: 'post',
                                url: 'url'
                            }
                        }, new Date(0)));
                    }
                }
            };

            const SubscriptionCreatedEventModel = {add: sinon.stub()};
            const labsService = {isSet: sinon.stub().returns(false)};
            const subscribeSpy = sinon.spy(DomainEvents, 'subscribe');
            const eventHandler = new MemberAttributionEventHandler({
                DomainEvents,
                SubscriptionCreatedEvent: SubscriptionCreatedEventModel,
                labsService
            });
            eventHandler.subscribe();
            sinon.assert.calledOnceWithMatch(SubscriptionCreatedEventModel.add, {
                member_id: '123',
                subscription_id: '456',
                created_at: new Date(0),
                attribution_id: null,
                attribution_type: null,
                attribution_url: null
            });
            sinon.assert.calledTwice(subscribeSpy);
        });
    });
});