161 lines
7.5 KiB
JavaScript
161 lines
7.5 KiB
JavaScript
var util = require('util');
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var d3 = require('d3-queue');
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var classes = require('../support/data_classes');
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module.exports = function () {
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this.Then(/^routability should be$/, (table, callback) => {
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this.buildWaysFromTable(table, () => {
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var directions = ['forw','backw','bothw'],
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headers = new Set(Object.keys(table.hashes()[0]));
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if (!directions.some(k => !!headers.has(k))) {
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throw new Error('*** routability table must contain either "forw", "backw" or "bothw" column');
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}
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this.reprocessAndLoadData((e) => {
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if (e) return callback(e);
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var testRow = (row, i, cb) => {
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var outputRow = Object.assign({}, row);
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testRoutabilityRow(i, (err, result) => {
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if (err) return cb(err);
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directions.filter(d => headers.has(d)).forEach((direction) => {
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var usingShortcut = false,
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want = row[direction];
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// shortcuts are when a test has mapped a value like `foot` to
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// a value like `5 km/h`, to represent the speed that one
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// can travel by foot. we check for these and use the mapped to
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// value for later comparison.
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if (this.shortcutsHash[row[direction]]) {
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want = this.shortcutsHash[row[direction]];
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usingShortcut = row[direction];
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}
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switch (true) {
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case '' === want:
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case 'x' === want:
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outputRow[direction] = result[direction].status ?
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result[direction].status.toString() : '';
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break;
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case /^\d+ s/.test(want):
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// the result here can come back as a non-number value like
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// `diff`, but we only want to apply the unit when it comes
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// back as a number, for tableDiff's literal comparison
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if (result[direction].time) {
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outputRow[direction] = !isNaN(result[direction].time) ?
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result[direction].time.toString()+' s' :
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result[direction].time.toString() || '';
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} else {
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outputRow[direction] = '';
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}
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break;
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case /^\d+ km\/h/.test(want):
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if (result[direction].speed) {
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outputRow[direction] = !isNaN(result[direction].speed) ?
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result[direction].speed.toString()+' km/h' :
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result[direction].speed.toString() || '';
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} else {
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outputRow[direction] = '';
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}
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break;
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default:
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throw new Error(util.format('*** Unknown expectation format: %s', want));
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}
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if (this.FuzzyMatch.match(outputRow[direction], want)) {
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outputRow[direction] = [usingShortcut ? usingShortcut : row[direction]];
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}
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});
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cb(null, outputRow);
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});
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};
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this.processRowsAndDiff(table, testRow, callback);
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});
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});
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});
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var testRoutabilityRow = (i, cb) => {
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var result = {};
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var testDirection = (dir, callback) => {
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var a = new classes.Location(this.origin[0] + (1+this.WAY_SPACING*i) * this.zoom, this.origin[1]),
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b = new classes.Location(this.origin[0] + (3+this.WAY_SPACING*i) * this.zoom, this.origin[1]),
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r = {};
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r.which = dir;
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this.requestRoute((dir === 'forw' ? [a, b] : [b, a]), [], this.queryParams, (err, res, body) => {
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if (err) return callback(err);
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r.query = this.query;
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r.json = JSON.parse(body);
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r.status = res.statusCode === 200 ? 'x' : null;
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if (r.status) {
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r.route = this.wayList(r.json.routes[0]);
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r.summary = r.json.routes[0].legs.map(l => l.summary).join(',');
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if (r.route.split(',')[0] === util.format('w%d', i)) {
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r.time = r.json.routes[0].duration;
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r.distance = r.json.routes[0].distance;
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r.speed = r.time > 0 ? parseInt(3.6 * r.distance / r.time) : null;
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} else {
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r.status = null;
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}
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}
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callback(null, r);
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});
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};
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d3.queue(1)
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.defer(testDirection, 'forw')
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.defer(testDirection, 'backw')
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.awaitAll((err, res) => {
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if (err) return cb(err);
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// check if forw and backw returned the same values
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res.forEach((dirRes) => {
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var which = dirRes.which;
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delete dirRes.which;
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result[which] = dirRes;
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});
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result.bothw = {};
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var sq = d3.queue();
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var parseRes = (key, scb) => {
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if (result.forw[key] === result.backw[key]) {
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result.bothw[key] = result.forw[key];
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// FIXME these time and speed checks are stopgaps for precision errors in how
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// OSRM returns inconsistent durations for rev/for requests along the same way
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} else if (key === 'time') {
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var range = [result.forw[key] - 1, result.forw[key] + 1];
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if (result.backw[key] >= range[0] && result.backw[key] <= range[1])
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// usually when we see minor differences here there's an integer
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// duration value and one that comes back with a .9 or .1 rounding.
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// This returns the integer one
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result.bothw[key] = parseInt(result.forw[key]) === result.forw[key] ? result.forw[key] : result.backw[key];
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else
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result.bothw[key] = 'diff';
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} else if (key === 'speed') {
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if (Math.abs(result.backw.time - result.forw.time) < 0.2) {
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result.bothw[key] = parseInt(result.forw[key]) === result.forw[key] ? result.forw[key] : result.backw[key];
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} else {
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result.bothw[key] = 'diff';
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}
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} else {
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result.bothw[key] = 'diff';
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}
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scb();
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};
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['status', 'time', 'distance', 'speed'].forEach((key) => {
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sq.defer(parseRes, key);
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});
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sq.awaitAll((err) => { cb(err, result); });
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});
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};
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};
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