Files
openlayers/test/spec/ol/geom/linestring.test.js
2013-05-28 16:01:33 +02:00

105 lines
3.1 KiB
JavaScript

goog.provide('ol.test.geom.LineString');
describe('ol.geom.LineString', function() {
describe('constructor', function() {
it('creates a linestring from an array', function() {
var line = new ol.geom.LineString([[10, 20], [30, 40]]);
expect(line).to.be.a(ol.geom.LineString);
expect(line).to.be.a(ol.geom.Geometry);
});
it('throws when given mismatched dimension', function() {
expect(function() {
var line = new ol.geom.LineString([[10, 20], [30, 40, 50]]);
line = line; // suppress gjslint warning about unused variable
}).to.throwException();
});
it('accepts shared vertices', function() {
var vertices = new ol.geom.SharedVertices();
var l1 = new ol.geom.LineString([[10, 20], [30, 40]], vertices);
var l2 = new ol.geom.LineString([[50, 60], [70, 80]], vertices);
expect(l1.getCoordinates()).to.eql([[10, 20], [30, 40]]);
expect(l2.getCoordinates()).to.eql([[50, 60], [70, 80]]);
});
});
describe('#dimension', function() {
it('can be 2', function() {
var line = new ol.geom.LineString([[10, 20], [30, 40]]);
expect(line.dimension).to.be(2);
});
it('can be 3', function() {
var line = new ol.geom.LineString([[10, 20, 30], [40, 50, 60]]);
expect(line.dimension).to.be(3);
});
});
describe('#getBounds()', function() {
it('returns the bounding extent', function() {
var line = new ol.geom.LineString([[10, 20], [20, 30], [30, 40]]);
var bounds = line.getBounds();
expect(bounds[0]).to.be(10);
expect(bounds[1]).to.be(30);
expect(bounds[2]).to.be(20);
expect(bounds[3]).to.be(40);
});
});
describe('#getCoordinates', function() {
it('returns an array', function() {
var line = new ol.geom.LineString([[10, 20], [30, 40]]);
expect(line.getCoordinates()).to.eql([[10, 20], [30, 40]]);
});
});
describe('#getSharedId()', function() {
it('returns identifiers', function() {
var vertices = new ol.geom.SharedVertices();
var l1 = new ol.geom.LineString([[10, 20], [30, 40]], vertices);
var l2 = new ol.geom.LineString(
[[50, 60], [70, 80], [90, 100]], vertices);
var id1 = l1.getSharedId();
var id2 = l2.getSharedId();
expect(vertices.coordinates).to.eql(
[10, 20, 30, 40, 50, 60, 70, 80, 90, 100]);
expect(vertices.getStart(id1)).to.be(0);
expect(vertices.getCount(id1)).to.be(2);
expect(vertices.get(id1, 0, 0)).to.be(10);
expect(vertices.get(id1, 0, 1)).to.be(20);
expect(vertices.get(id1, 1, 0)).to.be(30);
expect(vertices.get(id1, 1, 1)).to.be(40);
expect(vertices.getStart(id2)).to.be(4);
expect(vertices.getCount(id2)).to.be(3);
expect(vertices.get(id2, 0, 0)).to.be(50);
expect(vertices.get(id2, 0, 1)).to.be(60);
expect(vertices.get(id2, 1, 0)).to.be(70);
expect(vertices.get(id2, 1, 1)).to.be(80);
expect(vertices.get(id2, 2, 0)).to.be(90);
expect(vertices.get(id2, 2, 1)).to.be(100);
});
});
});
goog.require('ol.geom.Geometry');
goog.require('ol.geom.LineString');
goog.require('ol.geom.SharedVertices');