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Write support for ol.parser.GeoJSON

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Also add some convenience with static read and write methods based on the
singleton.
This commit is contained in:
Bart van den Eijnden
2013-05-23 14:39:18 +02:00
parent 513115ea3b
commit 93b067b6bc
3 changed files with 184 additions and 0 deletions
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48
test/spec/ol/parser/geojson.test.js
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@@ -68,6 +68,53 @@ describe('ol.parser.GeoJSON', function() {
]
};
describe('#write()', function() {
it('encodes point', function() {
var point = new ol.geom.Point([10, 20]);
var geojson = parser.write(point);
expect(point).to.eql(parser.read(geojson));
});
it('encodes linestring', function() {
var linestring = new ol.geom.LineString([[10, 20], [30, 40]]);
var geojson = parser.write(linestring);
expect(linestring).to.eql(parser.read(geojson));
});
it('encodes polygon', function() {
var outer = [[0, 0], [10, 0], [10, 10], [0, 10], [0, 0]],
inner1 = [[1, 1], [2, 1], [2, 2], [1, 2], [1, 1]],
inner2 = [[8, 8], [9, 8], [9, 9], [8, 9], [8, 8]];
var polygon = new ol.geom.Polygon([outer, inner1, inner2]);
var geojson = parser.write(polygon);
expect(polygon).to.eql(parser.read(geojson));
});
it('encodes geometry collection', function() {
var collection = new ol.geom.GeometryCollection([
new ol.geom.Point([10, 20]),
new ol.geom.LineString([[30, 40], [50, 60]])
]);
var geojson = parser.write(collection);
// surprised to see read return an Array of geometries instead of
// a true ol.geom.GeometryCollection, so compare collection.components
expect(collection.components).to.eql(parser.read(geojson));
});
it('encodes feature collection', function() {
var str = JSON.stringify(data),
array = parser.read(str);
var geojson = parser.write(array);
var result = parser.read(geojson);
for (var i = 0, ii = array.length; i < ii; ++i) {
expect(array[i].getGeometry()).to.eql(result[i].getGeometry());
expect(array[i].getAttributes()).to.eql(result[i].getAttributes());
}
});
});
describe('#read()', function() {
it('parses point', function() {
@@ -221,6 +268,7 @@ describe('ol.parser.GeoJSON', function() {
goog.require('ol.Feature');
goog.require('ol.extent');
goog.require('ol.geom.GeometryCollection');
goog.require('ol.geom.LinearRing');
goog.require('ol.geom.LineString');
goog.require('ol.geom.Point');