@graphistry/falcor/test/falcor/invalidate/invalidate.cache-only.spec.js

A JavaScript library for efficient data fetching.

var falcor = require('./../../../falcor.js');
var Model = falcor.Model;
var Rx = require('rx');
var LocalDataSource = require('../../data/LocalDataSource');
var chai = require('chai');
var expect = chai.expect;
var inspect = require('util').inspect;
var noOp = function() {};
var sinon = require('sinon');
var cacheGenerator = require('./../../CacheGenerator');
var strip = require('./../../cleanData').stripDerefAndVersionKeys;

describe('Cache Only', function() {
    it('should invalidate a leaf value.', function(done) {
        var dataSourceCount = sinon.spy();
        var dataSource = new LocalDataSource({}, {
            onGet: dataSourceCount
        });
        var model = new Model({
            cache: cacheGenerator(0, 1, ['title', 'art'])
        });
        var onNext = sinon.spy();
        model.
            invalidate(['videos', 0, 'title']);

        toObservable(model.
            withoutDataSource().
            get(['videos', 0, 'title'])).
            doAction(function(x) {
                throw inspect(x, {depth: 10}) + ' should not be onNext\'d';
            }).
            concat(model.get(['videos', 0, 'art'])).
            doAction(onNext, noOp, function() {
                expect(dataSourceCount.callCount).to.equals(0);
                expect(strip(onNext.getCall(0).args[0])).to.deep.equals({
                    json: {
                        videos: {
                            0: {
                                art: 'Video 0'
                            }
                        }
                    }
                });
            }).
            subscribe(noOp, done, done);
    });

    it('should invalidate a branch value.', function(done) {
        var dataSourceCount = 0;
        var summary = ['videos', 0, 'summary'];
        var art = ['videos', 0, 'art'];
        var onGet = sinon.spy();
        var dataSource = new LocalDataSource(cacheGenerator(0, 1, ['summary', 'art']), {
            onGet: onGet
        });
        var model = new Model({
            cache: cacheGenerator(0, 1, ['summary', 'art']),
            source: dataSource
        });
        var onNext = sinon.spy();
        model.
            invalidate(['videos', 0]);

        toObservable(model.
            withoutDataSource().
            get(summary.slice())).
            doAction(function(x) {
                throw inspect(x, {depth: 10}) + ' should not be onNext\'d';
            }).
            concat(model.get(art.slice())).
            doAction(onNext, noOp, function() {
                expect(onGet.calledOnce).to.be.ok;
                expect(onGet.getCall(0).args[1]).to.deep.equals([art]);
                expect(strip(onNext.getCall(0).args[0])).to.deep.equals({
                    json: {
                        videos: {
                            0: {
                                art: 'Video 0'
                            }
                        }
                    }
                });
            }).
            subscribe(noOp, done, done);
    });

    it('should invalidate a reference but not through the reference.', function(done) {
        var summary = ['genreList', 0, 0, 'summary'];
        var model = new Model({
            cache: cacheGenerator(0, 1, ['summary', 'art'])
        });
        var onNext = sinon.spy();
        model.
            invalidate(['lolomo', 0]);

        toObservable(model.
            withoutDataSource().
            get(summary.slice())).
            doAction(function(x) {
                throw inspect(x, {depth: 10}) + ' should not be onNext\'d';
            }).
            concat(model.get(['lists', 'A', 0, 'item', 'summary'])).
            doAction(onNext, noOp, function() {
                expect(strip(onNext.getCall(0).args[0])).to.deep.equals({
                    json: {
                        lists: {
                            A: {
                                0: {
                                    item: {
                                        summary: 'Video 0'
                                    }
                                }
                            }
                        }
                    }
                });
            }).
            subscribe(noOp, done, done);
    });
});