dc/spec/helpers/spec-helper.js

A multi-dimensional charting library built to work natively with crossfilter and rendered using d3.js

/* global parseTranslate */
beforeEach(function () {
    jasmine.clock().install();

    // If we're using browserify bundle, pull d3 and crossfilter out of it,
    // so that tests don't have to deal with this incidental complexity.
    /* jshint -W020 */
    if (typeof d3 === 'undefined') { d3 = dc.d3; }
    if (typeof crossfilter === 'undefined') { crossfilter = dc.crossfilter; }
    /* jshint +W020 */
    d3.select('body').append('div').attr('id', 'test-content');
});

afterEach(function () {
    dc.deregisterAllCharts();
    dc.renderlet(null);
    d3.selectAll('#test-content').remove();
    jasmine.clock().uninstall();
});

/* jshint -W098 */
function appendChartID (id) {
    return d3.select('#test-content').append('div').attr('id', id);
}

function coordsFromTranslate (translationString) {
    var result = parseTranslate(translationString);
    expect(result).not.toBeNull();
    return {x: +result[1], y: +result[2]};
}

// use UTC dates because these tests will be run in many time zones
function makeDate (year, month, day) {
    if (typeof year === 'string' || arguments.length !== 3) {
        throw new Error('makeDate takes year, month, day');
    }
    return new Date(Date.UTC(year, month, day, 0, 0, 0, 0));
}

// the invisible non-array members that we add in dc.filter cause the objects
// to be non-equal (correctly, but with no good diagnostics) in the eyes of Jasmine.
function cleanDateRange (range) {
    return [range[0], range[1]];
}

// http://stackoverflow.com/questions/20068497/d3-transition-in-unit-testing
function flushAllD3Transitions () {
    var now = Date.now;
    Date.now = function () { return Infinity; };
    d3.timer.flush();
    Date.now = now;
}
/* jshint +W098 */