@graphistry/falcor/test/set/pathValues/expired.spec.js

A JavaScript library for efficient data fetching.

var $ref = require('@graphistry/falcor-json-graph').ref;
var strip = require('../support/strip');
var $atom = require('@graphistry/falcor-json-graph').atom;
var $pathValue = require('@graphistry/falcor-json-graph').pathValue;

var expect = require('chai').expect;
var getModel = require('../support/getModel');
var setPathValues = require('../../../lib/cache/set/setPathValues');

describe('an expired value', function() {

    it('converts a negative $expires value to an absolute time', function() {

        var cache = {};
        var version = 0;

        setPathValues(
            getModel({ cache: cache, version: version++ }), [
                $pathValue('grid', $ref('grids["id"]')),
                $pathValue('grids["id"][0]', $ref('lists["id"]', {
                    $expires: -1000
                }))
            ]
        );
        var value = cache.grids.id[0];
        var expires = value.$expires;

        expect(expires > Date.now()).to.be.true;
        expect(strip(cache)).to.deep.equal(strip({
            grid: $ref('grids["id"]'),
            grids: { id: { 0: $ref('lists["id"]') } }
        }));
    });

    it('sets through an immediately expired reference', function() {

        var startTime = Date.now();
        var cache = {};
        var version = 0;
        var expired = [];

        setPathValues(
            getModel({ cache: cache, expired: expired, version: version++ }), [
                $pathValue('grid', $ref('grids["id"]')),
                $pathValue('grids["id"][0]', $ref('lists["id"]', {
                    $expires: 0
                })),
                $pathValue('grid[0][0].title', 'Pulp Fiction')
            ]);

        expect(expired.length).to.equal(1);
        expect(strip(cache)).to.deep.equal(strip({
            grid: $ref('grids["id"]'),
            grids: { id: { 0: $ref('lists["id"]') } },
            lists: { id: { 0: { title: $atom('Pulp Fiction') } } }
        }));
    });

    it('sets through an already expired reference', function() {

        var startTime = Date.now();
        var cache = {};
        var version = 0;
        var expired = [];

        setPathValues(
            getModel({ cache: cache, expired: expired, version: version++ }), [
                $pathValue('grid', $ref('grids["id"]')),
                $pathValue('grids["id"][0]', $ref('lists["id"]', {
                    $expires: startTime - 10
                })),
                $pathValue('grid[0][0].title', 'Pulp Fiction')
            ]
        );

        expect(expired.length).to.equal(1);
        expect(strip(cache)).to.deep.equal(strip({
            grid: $ref('grids["id"]'),
            grids: { id: { 0: { 0: { title: $atom('Pulp Fiction') } } } }
        }));
    });
});