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vector-tile.test.js
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"use strict";
var mapnik = require('../');
var assert = require('assert');
var fs = require('fs');
var path = require('path');
var mercator = new(require('@mapbox/sphericalmercator'))();
var existsSync = require('fs').existsSync || require('path').existsSync;
var overwrite_expected_data = false;
var zlib = require('zlib');
var boost_version = mapnik.versions.boost.split('.');
var hasBoostSimple = true;
mapnik.register_datasource(path.join(mapnik.settings.paths.input_plugins,'geojson.input'));
var trunc_6 = function(key, val) {
return val.toFixed ? Number(val.toFixed(6)) : val;
};
function deepEqualTrunc(json1,json2) {
return assert.deepEqual(JSON.stringify(json1,trunc_6),JSON.stringify(json2,trunc_6));
}
mapnik.register_datasource(path.join(mapnik.settings.paths.input_plugins,'shape.input'));
mapnik.register_datasource(path.join(mapnik.settings.paths.input_plugins,'gdal.input'));
describe('mapnik.VectorTile ', function() {
// generate test data
var _vtile;
var _data;
var _length;
before(function(done) {
if (overwrite_expected_data) {
var map = new mapnik.Map(256, 256);
map.loadSync('./test/data/vector_tile/layers.xml');
var vtile = new mapnik.VectorTile(9,112,195);
_vtile = vtile;
map.extent = [-11271098.442818949,4696291.017841229,-11192826.925854929,4774562.534805249];
map.render(vtile,{},function(err,vtile) {
if (err) throw err;
fs.writeFileSync('./test/data/vector_tile/tile1.vector.pbf',vtile.getData());
fs.writeFileSync('./test/data/vector_tile/tile1.vector.pbf.gz',vtile.getData({compress:"gzip"}));
_data = vtile.getData().toString("hex");
_length = vtile.getData().length;
var map2 = new mapnik.Map(256,256);
map2.loadSync('./test/data/vector_tile/layers.xml');
var vtile2 = new mapnik.VectorTile(5,28,12);
var bbox = mercator.bbox(28, 12, 5, false, '900913');
map2.extent = bbox;
map2.render(vtile2,{}, function(err,vtile2) {
if (err) throw err;
fs.writeFileSync("./test/data/vector_tile/tile3.mvt",vtile2.getData());
done();
});
});
} else {
_vtile = new mapnik.VectorTile(9,112,195);
_vtile.setData(fs.readFileSync('./test/data/vector_tile/tile1.vector.pbf'));
_data = _vtile.getData().toString("hex");
_length = _vtile.getData().length;
done();
}
});
if (hasBoostSimple) {
it('should fail when bad parameters are passed to reportGeometrySimplicity', function() {
var vtile = new mapnik.VectorTile(0,0,0);
assert.throws(function() { vtile.reportGeometrySimplicity(null); });
});
// this is not recommend, doing this purely to ensure we have test coverage
// it('successfully creates a not_simple_feature with a non-simple geometry', function(done) {
// var vtile = new mapnik.VectorTile(0,0,0);
// var gj_str = fs.readFileSync('./test/data/bowtie.geojson').toString('utf8');
// vtile.addGeoJSON(gj_str, 'not-simple', {strictly_simple: false, fill_type: mapnik.polygonFillType.evenOdd});
// var simple = vtile.reportGeometrySimplicity();
// // some sort of assert
// done();
// });
} else {
it('should fail when bad parameters are passed to reportGeometrySimplicity', function() {});
}
if (hasBoostSimple) {
it('empty tile should be simple', function (done) {
var vtile = new mapnik.VectorTile(0,0,0);
assert.equal(vtile.reportGeometrySimplicitySync(), 0);
assert.equal(vtile.reportGeometrySimplicity(), 0);
vtile.reportGeometrySimplicity(function(err, simple) {
if (err) throw err;
assert.equal(simple, 0);
done();
});
});
} else {
it.skip('empty tile should be simple', function () {});
}
if (hasBoostSimple) {
it('should fail when bad parameters are passed to reportGeometryValidity', function() {
var vtile = new mapnik.VectorTile(0,0,0);
assert.throws(function() { vtile.reportGeometryValidity(null); });
assert.throws(function() { vtile.reportGeometryValidity(1); });
assert.throws(function() { vtile.reportGeometryValidity({split_multi_features:null}); });
assert.throws(function() { vtile.reportGeometryValidity({lat_lon:null}); });
assert.throws(function() { vtile.reportGeometryValidity({web_merc:null}); });
assert.throws(function() { vtile.reportGeometryValidity({}, null); });
assert.throws(function() { vtile.reportGeometryValiditySync(null); });
assert.throws(function() { vtile.reportGeometryValiditySync(1); });
assert.throws(function() { vtile.reportGeometryValiditySync({split_multi_features:null}); });
assert.throws(function() { vtile.reportGeometryValiditySync({lat_lon:null}); });
assert.throws(function() { vtile.reportGeometryValiditySync({web_merc:null}); });
assert.throws(function() { vtile.reportGeometryValidity(null, function() {}); });
assert.throws(function() { vtile.reportGeometryValidity(1, function() {}); });
assert.throws(function() { vtile.reportGeometryValidity({split_multi_features:null}, function() {}); });
assert.throws(function() { vtile.reportGeometryValidity({lat_lon:null}, function() {}); });
assert.throws(function() { vtile.reportGeometryValidity({web_merc:null}, function() {}); });
});
} else {
it.skip('should fail when bad parameters are passed to reportGeometryValidity', function() {});
}
if (hasBoostSimple) {
it('empty tile should be valid', function (done) {
var vtile = new mapnik.VectorTile(0,0,0);
assert.equal(vtile.reportGeometryValiditySync(), 0);
assert.equal(vtile.reportGeometryValidity(), 0);
vtile.reportGeometryValidity(function(err, valid) {
if (err) throw err;
assert.equal(valid, 0);
done();
});
});
} else {
it.skip('empty tile should be valid', function (done) {});
}
it('should fail when adding bad parameters to add geoJSON', function() {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data"
}
}
]
};
var geo_str = JSON.stringify(geojson);
assert.throws(function() { vtile.addGeoJSON('asdf', 'layer-a'); });
assert.throws(function() { vtile.addGeoJSON(); });
assert.throws(function() { vtile.addGeoJSON(geo_str); });
assert.throws(function() { vtile.addGeoJSON(1, "layer"); });
assert.throws(function() { vtile.addGeoJSON(geo_str, 1); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", null); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {area_threshold:null}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {area_threshold:-1}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {strictly_simple:null}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {multi_polygon_union:null}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {fill_type:null}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {fill_type:99}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {process_all_rings:null}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {simplify_distance:null}); });
assert.throws(function() { vtile.addGeoJSON(geo_str, "layer", {simplify_distance:-0.5}); });
});
it('should be able to create a vector tile from geojson', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
assert.equal(vtile.getData().length,58);
var out = JSON.parse(vtile.toGeoJSON(0));
assert.equal(out.type,'FeatureCollection');
assert.equal(out.features.length,1);
var coords = out.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0] - geojson.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords[1] - geojson.features[0].geometry.coordinates[1]) < 0.3);
assert.equal(out.features[0].properties.name,'geojson data');
assert.equal(vtile.toGeoJSON(0),vtile.toGeoJSONSync(0));
vtile.toGeoJSON(0,function(err,json_string) {
var out2 = JSON.parse(json_string);
assert.equal(out2.type,'FeatureCollection');
assert.equal(out2.features.length,1);
var coords = out2.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0] - geojson.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords[1] - geojson.features[0].geometry.coordinates[1]) < 0.3);
assert.equal(out2.features[0].properties.name,'geojson data');
done();
});
});
it('should be able to create a vector tile from geojson - with simplification', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name", {simplify_distance:1.0,path_multiplier:16,area_threshold:0.1,strictly_simple:false} );
assert.equal(vtile.getData().length,58);
var out = JSON.parse(vtile.toGeoJSON(0));
assert.equal(out.type,'FeatureCollection');
assert.equal(out.features.length,1);
var coords = out.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0] - geojson.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords[1] - geojson.features[0].geometry.coordinates[1]) < 0.3);
assert.equal(out.features[0].properties.name,'geojson data');
assert.equal(vtile.toGeoJSON(0),vtile.toGeoJSONSync(0));
vtile.toGeoJSON(0,function(err,json_string) {
var out2 = JSON.parse(json_string);
assert.equal(out2.type,'FeatureCollection');
assert.equal(out2.features.length,1);
var coords = out2.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0] - geojson.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords[1] - geojson.features[0].geometry.coordinates[1]) < 0.3);
assert.equal(out2.features[0].properties.name,'geojson data');
done();
});
});
it('should be able to export point with toJSON decode_geometry', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
var actual = vtile.toJSON({decode_geometry:true});
var expected = [ {
name: 'layer-name',
extent: 4096,
version: 2,
features: [{
geometry: [660,1424],
geometry_type: "Point",
id: 1,
properties: {
name: "geojson data"
},
type: 1
}]
} ];
assert.deepEqual(actual, expected);
done();
});
it('should be able to export multipoint with toJSON decode_geometry', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "MultiPoint",
"coordinates": [[
-122,
48
],
[
-121,
48
]]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
var actual = vtile.toJSON({decode_geometry:true});
var expected = [ {
name: 'layer-name',
extent: 4096,
version: 2,
features: [{
geometry: [[660,1424],[671,1424]],
geometry_type: "MultiPoint",
id: 1,
properties: {
name: "geojson data"
},
type: 1
}]
} ];
assert.deepEqual(actual, expected);
done();
});
it('should be able to export line-string with toJSON decode_geometry', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "LineString",
"coordinates": [[
-122,
48
],
[
-121,
48
]]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
var actual = vtile.toJSON({decode_geometry:true});
var expected = [ {
name: 'layer-name',
extent: 4096,
version: 2,
features: [{
geometry: [[660,1424],[671,1424]],
geometry_type: "LineString",
id: 1,
properties: {
name: "geojson data"
},
type: 2
}]
} ];
assert.deepEqual(actual, expected);
done();
});
it('should be able to export multi-line-string with toJSON decode_geometry', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "MultiLineString",
"coordinates": [[[
-122,
48
],
[
-121,
48
]],[[
-122,
49
],
[
-121,
49
]]]
},
"properties": {
"name": "geojson data",
"bool": true // test for boolean coverage
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
var actual = vtile.toJSON({decode_geometry:true});
var expected = [ {
name: 'layer-name',
extent: 4096,
version: 2,
features: [{
geometry: [[[660,1424],[671,1424]],[[660,1407],[671,1407]]],
geometry_type: "MultiLineString",
id: 1,
properties: {
name: "geojson data",
"bool": true
},
type: 2
}]
} ];
assert.deepEqual(actual, expected);
done();
});
it('should throw when x, y, or z are negative', function(done) {
assert.throws(function() { new mapnik.VectorTile(0,0,-1); });
assert.throws(function() { new mapnik.VectorTile(0,-1,0); });
assert.throws(function() { new mapnik.VectorTile(-1,0,0); });
done();
});
it('should be able to create a vector tile from geojson - multipoint', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "MultiPoint",
"coordinates": [[
-122,
48
],
[
-121,
48
]]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
assert.equal(vtile.getData().length,60);
var out = JSON.parse(vtile.toGeoJSON(0));
assert.equal(out.type,'FeatureCollection');
assert.equal(out.features.length,1);
var coords = out.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0][0] - geojson.features[0].geometry.coordinates[0][0]) < 0.3);
assert.ok(Math.abs(coords[0][1] - geojson.features[0].geometry.coordinates[0][1]) < 0.3);
assert.ok(Math.abs(coords[1][0] - geojson.features[0].geometry.coordinates[1][0]) < 0.3);
assert.ok(Math.abs(coords[1][1] - geojson.features[0].geometry.coordinates[1][1]) < 0.3);
assert.equal(out.features[0].properties.name,'geojson data');
assert.equal(vtile.toGeoJSON(0),vtile.toGeoJSONSync(0));
vtile.toGeoJSON(0,function(err,json_string) {
var out2 = JSON.parse(json_string);
assert.equal(out2.type,'FeatureCollection');
assert.equal(out2.features.length,1);
var coords = out2.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0][0] - geojson.features[0].geometry.coordinates[0][0]) < 0.3);
assert.ok(Math.abs(coords[0][1] - geojson.features[0].geometry.coordinates[0][1]) < 0.3);
assert.ok(Math.abs(coords[1][0] - geojson.features[0].geometry.coordinates[1][0]) < 0.3);
assert.ok(Math.abs(coords[1][1] - geojson.features[0].geometry.coordinates[1][1]) < 0.3);
assert.equal(out2.features[0].properties.name,'geojson data');
done();
});
});
it('should be able to create a vector tile from geojson - multipoint - with simplification', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "MultiPoint",
"coordinates": [[
-122,
48
],
[
-121,
48
]]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name", {simplify_distance:1.0});
assert.equal(vtile.getData().length,60);
var out = JSON.parse(vtile.toGeoJSON(0));
assert.equal(out.type,'FeatureCollection');
assert.equal(out.features.length,1);
var coords = out.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0][0] - geojson.features[0].geometry.coordinates[0][0]) < 0.3);
assert.ok(Math.abs(coords[0][1] - geojson.features[0].geometry.coordinates[0][1]) < 0.3);
assert.ok(Math.abs(coords[1][0] - geojson.features[0].geometry.coordinates[1][0]) < 0.3);
assert.ok(Math.abs(coords[1][1] - geojson.features[0].geometry.coordinates[1][1]) < 0.3);
assert.equal(out.features[0].properties.name,'geojson data');
assert.equal(vtile.toGeoJSON(0),vtile.toGeoJSONSync(0));
vtile.toGeoJSON(0,function(err,json_string) {
var out2 = JSON.parse(json_string);
assert.equal(out2.type,'FeatureCollection');
assert.equal(out2.features.length,1);
var coords = out2.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0][0] - geojson.features[0].geometry.coordinates[0][0]) < 0.3);
assert.ok(Math.abs(coords[0][1] - geojson.features[0].geometry.coordinates[0][1]) < 0.3);
assert.ok(Math.abs(coords[1][0] - geojson.features[0].geometry.coordinates[1][0]) < 0.3);
assert.ok(Math.abs(coords[1][1] - geojson.features[0].geometry.coordinates[1][1]) < 0.3);
assert.equal(out2.features[0].properties.name,'geojson data');
done();
});
});
it('should be able to create a vector tile from multiple geojson files', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
var geojson2 = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data2"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson2),"layer-name2");
assert.equal(vtile.getData().length,118);
// test flattened to single geojson
var json_out = vtile.toGeoJSONSync('__all__');
var out = JSON.parse(json_out);
assert.equal(out.type,'FeatureCollection');
assert.equal(out.features.length,2);
var coords = out.features[0].geometry.coordinates;
assert.ok(Math.abs(coords[0] - geojson.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords[1] - geojson.features[0].geometry.coordinates[1]) < 0.3);
var coords2 = out.features[1].geometry.coordinates;
assert.ok(Math.abs(coords2[0] - geojson2.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords2[1] - geojson2.features[0].geometry.coordinates[1]) < 0.3);
assert.equal(out.features[0].properties.name,'geojson data');
assert.equal(out.features[1].properties.name,'geojson data2');
// not passing callback trigger sync method
assert.equal(vtile.toGeoJSON('__all__'),json_out);
// Test that we can pull back the different layers by name
var json_one = vtile.toGeoJSON('layer-name');
var json_two = vtile.toGeoJSON('layer-name2');
assert(json_one.length > 0);
assert(json_two.length > 0);
// Test for an invalid name throws
assert.throws(function() { vtile.toGeoJSON('foo'); });
// test array containing each geojson
var json_array = vtile.toGeoJSONSync('__array__');
var out2 = JSON.parse(json_array);
assert.equal(out2.length,2);
var coords3 = out2[0].features[0].geometry.coordinates;
assert.ok(Math.abs(coords3[0] - geojson.features[0].geometry.coordinates[0]) < 0.3);
assert.ok(Math.abs(coords3[1] - geojson.features[0].geometry.coordinates[1]) < 0.3);
// not passing callback trigger sync method
assert.equal(vtile.toGeoJSON('__array__'),json_array);
// ensure async method has same result, but chain together callbacks
// since we need to call done() at the end
vtile.toGeoJSON('__all__',function(err,json_string) {
assert.deepEqual(json_string,json_out);
vtile.toGeoJSON('__array__',function(err,json_string) {
assert.deepEqual(json_string,json_array);
vtile.toGeoJSON('layer-name', function(err, json_string) {
assert(json_string.length > 0);
done();
});
});
});
});
it('toGeoJSON should fail with invalid useage', function(done) {
var vtile = new mapnik.VectorTile(0,0,0);
assert.throws(function() { vtile.toGeoJSONSync(); });
assert.throws(function() { vtile.toGeoJSONSync(0); });
assert.throws(function() { vtile.toGeoJSONSync(-1); });
assert.throws(function() { vtile.toGeoJSONSync('foo'); });
assert.throws(function() { vtile.toGeoJSONSync(null); });
assert.throws(function() { vtile.toGeoJSON(); });
assert.throws(function() { vtile.toGeoJSON(0, function(err, jstr) {}) });
assert.throws(function() { vtile.toGeoJSON(-1, function(err, jstr) {}) });
assert.throws(function() { vtile.toGeoJSON('foo', function(err, jstr) {}) });
assert.throws(function() { vtile.toGeoJSON(null, function(err, jstr) {}) });
// Error message change after adding a feature.
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
-122,
48
]
},
"properties": {
"name": "geojson data"
}
}
]
};
vtile.addGeoJSON(JSON.stringify(geojson),"layer-name");
// Test failures again
assert.throws(function() { vtile.toGeoJSONSync(); });
assert.throws(function() { vtile.toGeoJSONSync(1); });
assert.throws(function() { vtile.toGeoJSONSync(-1); });
assert.throws(function() { vtile.toGeoJSONSync('foo'); });
assert.throws(function() { vtile.toGeoJSONSync(null); });
assert.throws(function() { vtile.toGeoJSON(); });
assert.throws(function() { vtile.toGeoJSON(1, function(err, jstr) {}) });
assert.throws(function() { vtile.toGeoJSON(-1, function(err, jstr) {}) });
assert.throws(function() { vtile.toGeoJSON('foo', function(err, jstr) {}) });
assert.throws(function() { vtile.toGeoJSON(null, function(err, jstr) {}) });
done();
});
it('should throw with invalid usage', function() {
// no 'new' keyword
assert.throws(function() { mapnik.VectorTile(); });
// invalid args
assert.throws(function() { new mapnik.VectorTile(); });
assert.throws(function() { new mapnik.VectorTile(1); });
assert.throws(function() { new mapnik.VectorTile('foo'); });
assert.throws(function() { new mapnik.VectorTile('a', 'b', 'c'); });
assert.throws(function() { new mapnik.VectorTile(0,0,0,null); });
assert.throws(function() { new mapnik.VectorTile(0,0,0,{tile_size:null}); });
assert.throws(function() { new mapnik.VectorTile(0,0,0,{buffer_size:null}); });
// invalid range
assert.throws(function() { new mapnik.VectorTile(-1,0,0); });
assert.throws(function() { new mapnik.VectorTile(1,-1,0); });
assert.throws(function() { new mapnik.VectorTile(1,0,-1); });
assert.throws(function() { new mapnik.VectorTile(1,0,2); });
assert.throws(function() { new mapnik.VectorTile(1,2,0); });
assert.throws(function() { new mapnik.VectorTile(4,16,0); });
assert.throws(function() { new mapnik.VectorTile(4,0,16); });
});
it('should not throw when using higher zoom levels', function() {
assert.doesNotThrow(function() { new mapnik.VectorTile(28,0,0); });
assert.doesNotThrow(function() { new mapnik.VectorTile(35,0,0); });
assert.doesNotThrow(function() { new mapnik.VectorTile(45,0,0); });
});
it('should be initialized properly', function() {
var vtile = new mapnik.VectorTile(0,0,0);
assert.ok(vtile instanceof mapnik.VectorTile);
assert.equal(vtile.tileSize, 4096);
assert.equal(vtile.bufferSize, 128);
assert.equal(vtile.painted(), false);
assert.equal(vtile.getData().toString(),"");
if (hasBoostSimple) {
assert.equal(vtile.reportGeometrySimplicity().length, 0);
assert.equal(vtile.reportGeometryValidity().length, 0);
}
assert.equal(vtile.empty(), true);
});
it('should accept optional tileSize', function(done) {
var vtile = new mapnik.VectorTile(0,0,0,{tile_size:512});
assert.equal(vtile.tileSize, 512);
assert.throws(function() { new mapnik.VectorTile(0,0,0,{tile_size:null});});
assert.throws(function() { new mapnik.VectorTile(0,0,0,{tile_size:0});});
assert.throws(function() { new mapnik.VectorTile(0,0,0,{tile_size:-256});});
assert.throws(function() { vtile.tileSize = 0; });
assert.throws(function() { vtile.tileSize = -256; });
assert.throws(function() { vtile.tileSize = 'asdf'; });
assert.equal(vtile.tileSize, 512);
vtile.tileSize = 256;
assert.equal(vtile.tileSize, 256);
done();
});
it('should accept optional bufferSize', function(done) {
var vtile = new mapnik.VectorTile(0,0,0,{buffer_size:18});
assert.equal(vtile.bufferSize, 18);
assert.throws(function() { new mapnik.VectorTile(0,0,0,{buffer_size:null});});
assert.throws(function() { new mapnik.VectorTile(0,0,0,{buffer_size:-2048});});
assert.throws(function() { vtile.bufferSize = 'asdf'; });
assert.throws(function() { vtile.bufferSize = -2048; }); // buffer size greater then tilesize supports
assert.equal(vtile.bufferSize, 18);
vtile.bufferSize = 512;
assert.equal(vtile.bufferSize, 512);
vtile.bufferSize = -2047;
assert.equal(vtile.bufferSize, -2047);
done();
});
it('should be able to addData in reasonable time', function(done) {
var vtile = new mapnik.VectorTile(3,2,3);
// tile1 represents a "solid" vector tile with one layer
// that only encodes a single feature with a single path with
// a polygon box resulting from clipping a chunk out of
// a larger polygon fully outside the rendered/clipping extent
var data = fs.readFileSync("./test/data/vector_tile/3.2.3.mbs4.mvt");
vtile.addData(data, function(err) {
assert.equal(vtile.empty(), false);
assert.equal(vtile.painted(), true);
assert.equal(vtile.empty(), false);
done();
});
});
it('should be able to setData/parse (sync)', function() {
var vtile = new mapnik.VectorTile(9,112,195);
// tile1 represents a "solid" vector tile with one layer
// that only encodes a single feature with a single path with
// a polygon box resulting from clipping a chunk out of
// a larger polygon fully outside the rendered/clipping extent
var data = fs.readFileSync("./test/data/vector_tile/tile1.vector.pbf");
vtile.setData(data);
assert.equal(vtile.empty(), false);
assert.equal(vtile.painted(), true);
assert.equal(vtile.empty(), false);
if (hasBoostSimple) {
assert.equal(vtile.reportGeometrySimplicity().length, 0);
assert.equal(vtile.reportGeometryValidity().length, 0);
}
});
it('should fail to getData due to bad input', function() {
var vtile = new mapnik.VectorTile(9,112,195);
var data = fs.readFileSync("./test/data/vector_tile/tile1.vector.pbf");
vtile.setData(data);
assert.throws(
function() { vtile.getDataSync(null); }, null,
"first arg must be a options object"
);
assert.throws(
function() { vtile.getData(null, function(err, out) {}); }, null,
"first arg must be a options object"
);
assert.throws(
function() { vtile.getDataSync({compression:null}); }, null,
"option 'compression' must be a string, either 'gzip', or 'none' (default)"
);
assert.throws(
function() { vtile.getData({compression:null}, function(err,out) {}); }, null,
"option 'compression' must be a string, either 'gzip', or 'none' (default)"
);
assert.throws(
function() { vtile.getDataSync({level:null}); }, null,
"option 'level' must be an integer between 0 (no compression) and 9 (best compression) inclusive"
);
assert.throws(
function() { vtile.getData({level:null}, function(err,out) {}); }, null,
"option 'level' must be an integer between 0 (no compression) and 9 (best compression) inclusive"
);
assert.throws(
function() { vtile.getDataSync({level:99}); }, null,
"option 'level' must be an integer between 0 (no compression) and 9 (best compression) inclusive"
);
assert.throws(
function() { vtile.getData({level:99}, function(err,out) {}); }, null,
"option 'level' must be an integer between 0 (no compression) and 9 (best compression) inclusive"
);
assert.throws(
function() { vtile.getDataSync({level:-1}); }, null,
"option 'level' must be an integer between 0 (no compression) and 9 (best compression) inclusive"
);
assert.throws(
function() { vtile.getData({level:-1}, function(err,out) {}); }, null,
"option 'level' must be an integer between 0 (no compression) and 9 (best compression) inclusive"
);
assert.throws(
function() { vtile.getDataSync({strategy:null}); }, null,
"option 'strategy' must be one of the following strings: FILTERED, HUFFMAN_ONLY, RLE, FIXED, DEFAULT"
);
assert.throws(
function() { vtile.getData({strategy:null}, function(err,out) {}); }, null,
"option 'strategy' must be one of the following strings: FILTERED, HUFFMAN_ONLY, RLE, FIXED, DEFAULT"
);
assert.throws(
function() { vtile.getDataSync({strategy:'FOO'}); }, null,
"option 'strategy' must be one of the following strings: FILTERED, HUFFMAN_ONLY, RLE, FIXED, DEFAULT"
);
assert.throws(
function() { vtile.getData({strategy:'FOO'}, function(err,out) {}); }, null,
"option 'strategy' must be one of the following strings: FILTERED, HUFFMAN_ONLY, RLE, FIXED, DEFAULT"
);
});
it('should create empty buffer with getData with no data provided.', function(done) {
var vtile = new mapnik.VectorTile(9,112,195);
var uncompressed = vtile.getData();
assert.equal(uncompressed.length, 0);
vtile.getData(function(err, uncompressed2) {
assert.equal(uncompressed2.length, 0);
done();
});
});
it('should return the correct bufferedExtent', function(done) {
var vtile = new mapnik.VectorTile(9,112,195);
var extent = vtile.bufferedExtent();
var expected = [-11273544.427724076, 4693845.032936104, -11190380.940949803, 4777008.519710373];
// typically not different, but rounding can cause different values
// so we assert each value's difference is nominal
assert(Math.abs(extent[0] - expected[0]) < 1e-8);
assert(Math.abs(extent[1] - expected[1]) < 1e-8);
assert(Math.abs(extent[2] - expected[2]) < 1e-8);
assert(Math.abs(extent[3] - expected[3]) < 1e-8);
done();
});
it('should return the correct extent', function(done) {
var vtile = new mapnik.VectorTile(9,112,195);
var extent = vtile.extent();
var expected = [-11271098.44281895, 4696291.017841229, -11192826.925854929, 4774562.534805248];
// typically not different, but rounding can cause different values
// so we assert each value's difference is nominal
assert(Math.abs(extent[0] - expected[0]) < 1e-8);
assert(Math.abs(extent[1] - expected[1]) < 1e-8);
assert(Math.abs(extent[2] - expected[2]) < 1e-8);
assert(Math.abs(extent[3] - expected[3]) < 1e-8);
done();
});
it('only should throw if you try to set x, y, and z with bad input', function() {
var vtile = new mapnik.VectorTile(9,112,195);
assert.throws(function() { vtile.x = null; });
assert.throws(function() { vtile.x = '1'; });
assert.throws(function() { vtile.x = -1; });
assert.throws(function() { vtile.y = null; });
assert.throws(function() { vtile.y = '1'; });
assert.throws(function() { vtile.y = -1; });
assert.throws(function() { vtile.z = null; });
assert.throws(function() { vtile.z = '1'; });
assert.throws(function() { vtile.z = -1; });
});
it('should be able to change tile coordinates and it change the extent', function(done) {
var vtile = new mapnik.VectorTile(9,112,195);
var extent = vtile.extent();
var expected = [-11271098.442818949, 4696291.017841229, -11192826.925854929, 4774562.534805249];
// typically not different, but rounding can cause different values
// so we assert each value's difference is nominal
assert(Math.abs(extent[0] - expected[0]) < 1e-8);
assert(Math.abs(extent[1] - expected[1]) < 1e-8);
assert(Math.abs(extent[2] - expected[2]) < 1e-8);
assert(Math.abs(extent[3] - expected[3]) < 1e-8);
assert.equal(vtile.z, 9);
assert.equal(vtile.x, 112);
assert.equal(vtile.y, 195);
vtile.x = 0;
assert.equal(vtile.x, 0);
extent = vtile.extent();
var expected_x = [-20037508.342789244, 4696291.017841229, -19959236.82582522, 4774562.534805249];
assert(Math.abs(extent[0] - expected_x[0]) < 1e-8);
assert(Math.abs(extent[1] - expected_x[1]) < 1e-8);
assert(Math.abs(extent[2] - expected_x[2]) < 1e-8);
assert(Math.abs(extent[3] - expected_x[3]) < 1e-8);
vtile.y = 0;
assert.equal(vtile.y, 0);
extent = vtile.extent();
var expected_y = [-20037508.342789244, 19959236.82582522, -19959236.82582522, 20037508.342789244];
assert(Math.abs(extent[0] - expected_y[0]) < 1e-8);
assert(Math.abs(extent[1] - expected_y[1]) < 1e-8);
assert(Math.abs(extent[2] - expected_y[2]) < 1e-8);
assert(Math.abs(extent[3] - expected_y[3]) < 1e-8);
vtile.z = 0;
assert.equal(vtile.z, 0);
extent = vtile.extent();
var expected_z = [-20037508.342789244, -20037508.342789244, 20037508.342789244, 20037508.342789244];
assert(Math.abs(extent[0] - expected_z[0]) < 1e-8);
assert(Math.abs(extent[1] - expected_z[1]) < 1e-8);
assert(Math.abs(extent[2] - expected_z[2]) < 1e-8);
assert(Math.abs(extent[3] - expected_z[3]) < 1e-8);
done();
});
it('should be able to getData with a RLE', function(done) {
var vtile = new mapnik.VectorTile(9,112,195);
var data = fs.readFileSync("./test/data/vector_tile/tile1.vector.pbf");
vtile.setData(data);
var uncompressed = vtile.getData();
var gzip = zlib.createGzip({
strategy: zlib.Z_RLE
}), buffers=[], nread=0;
gzip.on('error', function(err) {
gzip.removeAllListeners();
gzip=null;
});
gzip.on('data', function(chunk) {
buffers.push(chunk);
nread += chunk.length;
});
gzip.on('end', function() {
var buffer;
switch (buffers.length) {
case 0: // no data. return empty buffer
buffer = new Buffer.alloc(0);
break;
case 1: // only one chunk of data. return it.
buffer = buffers[0];
break;
default: // concatenate the chunks of data into a single buffer.
buffer = new Buffer.alloc(nread);
var n = 0;
buffers.forEach(function(b) {
var l = b.length;
b.copy(buffer, n, 0, l);
n += l;
});
break;
}
gzip.removeAllListeners();
gzip=null;
var compressed = vtile.getData({compression:'gzip', strategy:'RLE'});
// Substring used to remove gzip header
assert.equal(buffer.toString('hex').substring(20), compressed.toString('hex').substring(20));
vtile.getData({compression:'gzip', strategy:'RLE'}, function (err, compressed) {
// Substring used to remove gzip header
assert.equal(buffer.toString('hex').substring(20), compressed.toString('hex').substring(20));
done();
});
});
gzip.write(uncompressed);
gzip.end();
});
it('should be able to getData with a FILTERED', function(done) {
var vtile = new mapnik.VectorTile(9,112,195);
var data = fs.readFileSync("./test/data/vector_tile/tile1.vector.pbf");
vtile.setData(data);