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image.svg.test.js
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image.svg.test.js
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/* global describe it */
'use strict';
var mapnik = require('../');
var assert = require('assert');
var fs = require('fs');
describe('mapnik.Image SVG', function() {
it('should throw with invalid usage', function(done) {
assert.throws(function() { new mapnik.Image.fromSVGSync(); });
assert.throws(function() { new mapnik.Image.fromSVG(); });
assert.throws(function() { new mapnik.Image.fromSVGBytes(); });
assert.throws(function() {
new mapnik.Image.fromSVGBytesSync(1);
}, /must provide a buffer argument/);
assert.throws(function() {
new mapnik.Image.fromSVGBytesSync({});
}, /first argument is invalid, must be a Buffer/);
assert.throws(function() {
new mapnik.Image.fromSVGBytes(1, function(err, svg) {});
}, /must provide a buffer argument/);
assert.throws(function() {
new mapnik.Image.fromSVGBytes({}, function(err, svg) {});
}, /first argument is invalid, must be a Buffer/);
assert.throws(function() {
new mapnik.Image.fromSVGBytesSync(new Buffer('asdfasdf'));
}, /SVG error: unable to parse "asdfasdf"/);
assert.throws(function() {
mapnik.Image.fromSVGSync('./test/data/SVG_DOES_NOT_EXIST.svg');
}, /SVG error: unable to open "\.\/test\/data\/SVG_DOES_NOT_EXIST\.svg"/);
assert.throws(function() {
mapnik.Image.fromSVGSync('./test/data/vector_tile/tile0.expected-svg.svg', 256);
}, /optional second arg must be an options object/);
assert.throws(function() {
mapnik.Image.fromSVG('./test/data/vector_tile/tile0.expected-svg.svg', 256);
}, /last argument must be a callback function/);
assert.throws(function() {
mapnik.Image.fromSVGBytes(new Buffer('asdfasdf'), 256);
}, /last argument must be a callback function/);
assert.throws(function() {
mapnik.Image.fromSVG('./test/data/vector_tile/tile0.expected-svg.svg', 256, function(err, res) {});
}, /optional second arg must be an options object/);
assert.throws(function() {
mapnik.Image.fromSVGBytes(new Buffer('asdfasdf'), 256, function(err, res) {});
}, /optional second arg must be an options object/);
assert.throws(function() {
mapnik.Image.fromSVGSync('./test/data/vector_tile/tile0.expected-svg.svg', { scale: 'foo' });
}, /'scale' must be a number/);
assert.throws(function() {
mapnik.Image.fromSVG('./test/data/vector_tile/tile0.expected-svg.svg', { scale: 'foo' }, function(err, res) {});
}, /'scale' must be a number/);
assert.throws(function() {
mapnik.Image.fromSVGBytes(new Buffer('asdf'), { scale: 'foo' }, function(err, res) {});
}, /'scale' must be a number/);
assert.throws(function() {
mapnik.Image.fromSVGBytes(undefined, { scale: 1 }, function(err, res) {});
}, /must provide a buffer argument/);
assert.throws(function() {
mapnik.Image.fromSVGBytes(null, { scale: 1 }, function(err, res) {});
}, /must provide a buffer argument/);
assert.throws(function() {
mapnik.Image.fromSVGSync('./test/data/vector_tile/tile0.expected-svg.svg', { scale: -1 });
}, /'scale' must be a positive non zero number/);
assert.throws(function() {
mapnik.Image.fromSVG('./test/data/vector_tile/tile0.expected-svg.svg', { scale: -1 }, function(err, res) {});
}, /'scale' must be a positive non zero number/);
assert.throws(function() {
mapnik.Image.fromSVGBytes(new Buffer('asdf'), { scale: -1 }, function(err, res) {});
}, /'scale' must be a positive non zero number/);
assert.throws(function() {
mapnik.Image.fromSVGSync('./test/data/vector_tile/tile0.corrupt-svg.svg');
}, /image created from svg must have a width and height greater then zero/);
mapnik.Image.fromSVGBytes(new Buffer('a'), { scale: 1 }, function(err, res) {
assert.ok(err);
assert.ok(err.message.match(/SVG error: unable to parse "a"/));
var svgdata = "<svg width='1000000000000' height='1000000000000'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, { scale: 1 }, function(err, img) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must be 2048 pixels or fewer on each side/));
var svgdata2 = "<svg width='100' height='100'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer2 = new Buffer(svgdata2);
mapnik.Image.fromSVGBytes(buffer2, { scale: 1000000 }, function(err, img) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must be 2048 pixels or fewer on each side/));
done();
});
});
});
});
it('blocks allocating a very large image', function(done) {
// 65535 is the max width/height in mapnik
var svgdata = "<svg width='65535' height='65535'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, function(err, img) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must be 2048 pixels or fewer on each side/));
done();
});
});
it('customized the max image size to block', function(done) {
// 65535 is the max width/height in mapnik
var svgdata = "<svg width='65535' height='65535'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, {max_size:2049}, function(err, img) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must be 2049 pixels or fewer on each side/));
done();
});
});
it('max image size blocks dimension*scale', function(done) {
// 65535 is the max width/height in mapnik
var svgdata = "<svg width='5000' height='5000'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, {scale: 2, max_size:10000-1}, function(err, img) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must be 9999 pixels or fewer on each side/));
done();
});
});
if (process.platform === 'win32') {
// skip on windows since appveyor does not have enough memory
it.skip('allocates very large image', function() {});
} else {
it('allocates very large image', function(done) {
// 65535 is the max width/height in mapnik
var svgdata = "<svg width='5000' height='5000'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, {scale: 2, max_size:10000}, function(err, img) {
if (err) throw err;
assert.equal(img.width(),10000);
assert.equal(img.height(),10000);
done();
});
});
}
it('should err with async file w/o width or height', function(done) {
mapnik.Image.fromSVG('./test/data/vector_tile/tile0.corrupt-svg.svg', function(err, svg) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must have a width and height greater then zero/));
assert.equal(svg, undefined);
done();
});
});
it('should err with async file w/o width or height as Bytes', function(done) {
var svgdata = "<svg width='0' height='0'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, function(err, img) {
assert.ok(err);
assert.ok(err.message.match(/image created from svg must have a width and height greater then zero/));
assert.equal(img, undefined);
done();
});
});
it('should err with async invalid buffer', function(done) {
mapnik.Image.fromSVGBytes(new Buffer('asdfasdf'), function(err, svg) {
assert.ok(err);
assert.ok(err.message.match(/SVG error: unable to parse "asdfasdf"/));
assert.equal(svg, undefined);
done();
});
});
it('should err with async non-existent file', function(done) {
mapnik.Image.fromSVG('./test/data/SVG_DOES_NOT_EXIST.svg', function(err, svg) {
assert.ok(err);
assert.ok(err.message.match(/SVG error: unable to open "\.\/test\/data\/SVG_DOES_NOT_EXIST\.svg"/));
assert.equal(svg, undefined);
done();
});
});
it('should not error with async in non-strict mode on svg with validation and parse errors', function(done) {
mapnik.Image.fromSVG('./test/data/vector_tile/errors.svg', {strict:false}, function(err, svg) {
assert.ok(!err);
assert.ok(svg);
done();
});
});
it('should error with async in strict mode on svg with validation and parse errors', function(done) {
mapnik.Image.fromSVG('./test/data/vector_tile/errors.svg', {strict:true}, function(err, svg) {
assert.ok(err);
assert.ok(err.message.match(/SVG parse error:/));
assert.equal(svg, undefined);
done();
});
});
it('should not error on svg with unhandled elements in non-strict mode', function() {
var svgdata = "<svg width='100' height='100'><g id='a'><text></text><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
var img = mapnik.Image.fromSVGBytesSync(buffer,{strict:false});
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 100);
assert.equal(img.height(), 100);
assert.equal(img.encodeSync("png").length, 1270);
});
// test the mapnik core known unsupported elements: https://github.com/mapnik/mapnik/blob/634928fcbe780e8a5a355ddb3cd075ce2450adb4/src/svg/svg_parser.cpp#L106-L114
it('should error on svg with unhandled elements in strict mode', function() {
var svgdata = "<svg width='100' height='100'><g id='a'><unsupported></unsupported><text></text><symbol></symbol><image></image><marker></marker><view></view><switch></switch><a></a><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
var error = false;
try {
var img = mapnik.Image.fromSVGBytesSync(buffer,{strict:true});
assert.ok(!img);
} catch (err) {
error = err;
}
assert.ok(error);
assert.ok(error.message.match(/<text> element is not supported/));
assert.ok(error.message.match(/<switch> element is not supported/));
assert.ok(error.message.match(/<symbol> element is not supported/));
assert.ok(error.message.match(/<marker> element is not supported/));
assert.ok(error.message.match(/<view> element is not supported/));
assert.ok(error.message.match(/<a> element is not supported/));
assert.ok(error.message.match(/<image> element is not supported/));
});
it('#fromSVGSync load from SVG file', function() {
var img = mapnik.Image.fromSVGSync('./test/data/vector_tile/tile0.expected-svg.svg');
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 256);
assert.equal(img.height(), 256);
assert.equal(img.encodeSync('png32').length, 17546);
});
it('#fromSVGSync load from SVG file - 2', function() {
var img = mapnik.Image.fromSVG('./test/data/vector_tile/tile0.expected-svg.svg');
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 256);
assert.equal(img.height(), 256);
assert.equal(img.encodeSync('png32').length, 17546);
});
it('#fromSVG load from SVG file', function(done) {
mapnik.Image.fromSVG('./test/data/vector_tile/tile0.expected-svg.svg', function(err, img) {
assert.ok(img); assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 256);
assert.equal(img.height(), 256);
assert.equal(img.encodeSync('png32').length, 17546);
assert.equal(img.premultiplied(), false);
done();
});
});
it('#fromSVGBytesSync load from SVG buffer', function() {
var svgdata = "<svg width='100' height='100'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
var img = mapnik.Image.fromSVGBytesSync(buffer);
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 100);
assert.equal(img.height(), 100);
assert.equal(img.encodeSync("png").length, 1270);
});
it('#fromSVGBytesSync load from SVG buffer - 2', function() {
var svgdata = "<svg width='100' height='100'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
var img = mapnik.Image.fromSVGBytes(buffer);
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 100);
assert.equal(img.height(), 100);
assert.equal(img.encodeSync("png").length, 1270);
});
it('#fromSVGBytes load from SVG buffer', function(done) {
var svgdata = "<svg width='100' height='100'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
mapnik.Image.fromSVGBytes(buffer, function(err, img) {
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 100);
assert.equal(img.height(), 100);
assert.equal(img.encodeSync("png").length, 1270);
assert.equal(img.premultiplied(), false);
done();
});
});
it('svg scaling', function() {
var svgdata = "<svg width='100' height='100'><g id='a'><ellipse fill='#FFFFFF' stroke='#000000' stroke-width='4' cx='50' cy='50' rx='25' ry='25'/></g></svg>";
var buffer = new Buffer(svgdata);
var img = mapnik.Image.fromSVGBytesSync(buffer, { scale: 0.5});
assert.ok(img);
assert.ok(img instanceof mapnik.Image);
assert.equal(img.width(), 50);
assert.equal(img.height(), 50);
assert.equal(img.encodeSync("png").length, 616);
assert.equal(img.premultiplied(), false);
});
});