paper.js/test/tests/SvgImport.js

/*
 * Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
 * http://paperjs.org/
 *
 * Copyright (c) 2011 - 2016, Juerg Lehni & Jonathan Puckey
 * http://scratchdisk.com/ & http://jonathanpuckey.com/
 *
 * Distributed under the MIT license. See LICENSE file for details.
 *
 * All rights reserved.
 */

QUnit.module('SvgImport');

test('Import SVG line', function() {
    var attrs = {
        x1: 5,
        x2: 45,
        y1: 5,
        y2: 45
    };
    var imported = paper.project.importSVG(createSVG('line', attrs));
    var path = new Path.Line([attrs.x1, attrs.y1], [attrs.x2, attrs.y2]);
    equals(imported, path);
});

test('Import SVG rect', function() {
    var attrs = {
        x: 25,
        y: 25,
        width: 100,
        height: 100
    };
    var imported = paper.project.importSVG(createSVG('rect', attrs),
            { expandShapes: true });
    var path = new Path.Rectangle(attrs);
    equals(imported, path);
});

test('Import SVG round rect', function() {
    var attrs = {
        x: 25,
        y: 25,
        rx: 50,
        ry: 50,
        width: 100,
        height: 100
    };
    var imported = paper.project.importSVG(createSVG('rect', attrs),
            { expandShapes: true });
    var path = new Path.Rectangle(new Rectangle(attrs),
            new Size(attrs.rx, attrs.ry));
    equals(imported, path);
});

test('Import SVG ellipse', function() {
    var attrs = {
        cx: 300,
        cy: 80,
        rx: 100,
        ry: 50
    };
    var imported = paper.project.importSVG(createSVG('ellipse', attrs),
            { expandShapes: true });
    var path = new Path.Ellipse({
        center: new Point(attrs.cx, attrs.cy),
        radius: new Point(attrs.rx, attrs.ry)
    });
    equals(imported, path);
});

test('Import SVG circle', function() {
    var attrs = {
        cx: 100,
        cy: 80,
        r: 50
    };
    var imported = paper.project.importSVG(createSVG('circle', attrs),
            { expandShapes: true });
    var path = new Path.Circle({
        center: new Point(attrs.cx, attrs.cy),
        radius: attrs.r
    });
    equals(imported, path);
});

function createPolyPath(str) {
    var points = str.split(' ').map(function(point) {
        return point.split(',').map(parseFloat);
    });
    var path = new Path();
    path.moveTo(points[0]);
    for (var i = 1; i < points.length; i++)
        path.lineTo(points[i]);
    return path;
}

test('Import SVG polygon', function() {
    var points = '100,10 40,180 190,60 10,60 160,180';
    var imported = paper.project.importSVG(createSVG('polygon', {
        points: points
    }));
    var path = createPolyPath(points);
    path.closePath();
    equals(imported, path);
});

test('Import SVG polyline', function() {
    var points = '5,5 45,45 5,45 45,5';
    var imported = paper.project.importSVG(createSVG('polyline', {
        points: points
    }));
    var path = createPolyPath(points);
    equals(imported, path);
});

test('Import complex CompoundPath and clone', function() {
    var svg = createSVG('<path fill="red" d="M4,14h20v-2H4V14z M15,26h7v-2h-7V26z M15,22h9v-2h-9V22z M15,18h9v-2h-9V18z M4,26h9V16H4V26z M28,10V6H0v22c0,0,0,4,4,4 h25c0,0,3-0.062,3-4V10H28z M4,30c-2,0-2-2-2-2V8h24v20c0,0.921,0.284,1.558,0.676,2H4z"/>');
    var item = paper.project.importSVG(svg);
    equals(item.clone(), item, null, { cloned: true });
});

function importSVG(assert, url, message, options) {
    var done = assert.async();
    project.importSVG(url, {
        onLoad: function(item, svg) {
            if (!message) {
                message = 'The imported SVG "' + url + '" should visually be '
                    + 'the same as the rasterized original SVG data.';
            }
            compareSVG(done, item, svg, message, options);
        },
        onError: function(error) {
            var ok = !!(options && options.expectError);
            QUnit.push(ok, false, !ok, ok && message
                || 'Loading SVG from a valid URL should not give an error.');
            done();
        }
    });
}

if (!isNode) {
    // JSDom does not have SVG rendering, so we can't test there.
    var svgFiles = ['viewbox', 'clipping', 'gradients-1'];
    // TODO: Investigate why Phantom struggles with this file:
    if (!isPhantom)
        svgFiles.push('gradients-2');
    svgFiles.forEach(function(name) {
        name += '.svg';
        test('Import ' + name, function(assert) {
            importSVG(assert, 'assets/' + name);
        });
    });

    test('Import inexistent file', function(assert) {
        importSVG(assert, 'assets/inexistent.svg',
            'Load an inexistent SVG file should trigger an error',
            { expectError: true });
    });
}