terriajs/test/Models/TableDataSourceSpec.js

Geospatial data visualization platform.

'use strict';

/*global require*/
var loadText = require('../../lib/Core/loadText');
var TableDataSource = require('../../lib/Models/TableDataSource');
var TableStyle = require('../../lib/Models/TableStyle');
var Terria = require('../../lib/Models/Terria');


describe('TableDataSource', function() {

    var tableDataSource;

    beforeEach(function() {
        var terria = new Terria({
            baseUrl: './'
        });
        tableDataSource = new TableDataSource(terria);
    });

    it('can be constructed', function() {
        expect(tableDataSource).toBeDefined();
    });

    it('can load csv and detect lat and lon', function(done) {
        loadText('/test/csv/lat_lon_val.csv').then(function(text) {
            tableDataSource.loadFromCsv(text);
            expect(tableDataSource.tableStructure.hasLatitudeAndLongitude).toEqual(true);
        }).then(done).otherwise(done.fail);
    });

    it('does not set the clock when there is no date column', function(done) {
        loadText('/test/csv/lat_lon_val.csv').then(function(text) {
            tableDataSource.loadFromCsv(text);
            expect(tableDataSource.clock).toBeUndefined();
        }).then(done).otherwise(done.fail);
    });

    it('sets the clock when there is an active date column', function(done) {
        loadText('/test/csv/lat_long_enum_moving_date.csv').then(function(text) {
            tableDataSource.loadFromCsv(text);
            tableDataSource.tableStructure.setActiveTimeColumn();
            expect(tableDataSource.clock).toBeDefined();
        }).then(done).otherwise(done.fail);
    });

    it('scales points', function(done) {
        var tableStyle = new TableStyle({
            scaleByValue: true,
            scale: 5
        });
        tableDataSource.tableStyle = tableStyle;
        loadText('/test/csv/lat_lon_enum_val.csv').then(function(text) {
            tableDataSource.loadFromCsv(text);
            tableDataSource.tableStructure.columns[3].toggleActive();
            var features = tableDataSource.entities.values;
            expect(tableDataSource.tableStructure.columns[0].values).not.toEqual(tableDataSource.tableStructure.columns[1].values);
            // expect the first two features to have different scales (line above ensures they have different values)
            expect(features[0].point.pixelSize.getValue()).not.toEqual(features[1].point.pixelSize.getValue());
        }).then(done).otherwise(done.fail);
    });

    it('handles moving point csvs', function(done) {
        tableDataSource.tableStructure.idColumnNames = ['id'];
        loadText('/test/csv/lat_lon_enum_date_id.csv').then(function(text) {
            tableDataSource.loadFromCsv(text); // at this point, there's no active time column, so we'll see 13 features, one per row.
            var features = tableDataSource.entities.values;
            expect(features.length).toEqual(13);
            tableDataSource.tableStructure.setActiveTimeColumn();
            tableDataSource.tableStructure.columns[5].isActive = true; // Just to trigger the feature update process
            expect(tableDataSource.clock).toBeDefined();
            features = tableDataSource.entities.values;
            expect(features.length).toEqual(4);
        }).then(done).otherwise(done.fail);
    });

});