svg-pathdata/dist/tests/smoothquadraticcurveto.test.js

Manipulate SVG path data (path[d] attribute content) simply and efficiently.

import { describe, test, expect } from '@jest/globals';
import { SVGPathData } from '../index.js';
describe('Parsing smooth quadratic curve to commands', () => {
    test('should fail with a with single coordinate', () => {
        expect(() => new SVGPathData('T100')).toThrow(new SyntaxError('Unterminated command at the path end.'));
    });
    test('should fail with a single complexer coordinate', () => {
        expect(() => new SVGPathData('t-10e-5')).toThrow(new SyntaxError('Unterminated command at the path end.'));
    });
    test('should work with comma separated coordinates', () => {
        const commands = new SVGPathData('T100,100').commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(false);
        expect(commands[0].x).toEqual(100);
        expect(commands[0].y).toEqual(100);
    });
    test('should work with space separated coordinates', () => {
        const commands = new SVGPathData('t100 \t   100').commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(true);
        expect(commands[0].x).toEqual(100);
        expect(commands[0].y).toEqual(100);
    });
    test('should work with complexer coordinates', () => {
        const commands = new SVGPathData('t-10e-5 -10e-5').commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(true);
        expect(commands[0].x).toEqual(-10e-5);
        expect(commands[0].y).toEqual(-10e-5);
    });
    test('should work with even more complexer coordinates', () => {
        const commands = new SVGPathData('T-10.0032e-5 -10.0032e-5')
            .commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(false);
        expect(commands[0].x).toEqual(-10.0032e-5);
        expect(commands[0].y).toEqual(-10.0032e-5);
    });
    test('should work with comma separated coordinate pairs', () => {
        const commands = new SVGPathData('T123,456 7890,9876')
            .commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(false);
        expect(commands[0].x).toEqual(123);
        expect(commands[0].y).toEqual(456);
        expect(commands[1].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[1].relative).toEqual(false);
        expect(commands[1].x).toEqual(7890);
        expect(commands[1].y).toEqual(9876);
    });
    test('should work with space separated coordinate pairs', () => {
        const commands = new SVGPathData('t123  \t 456  \n 7890  \r 9876')
            .commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(true);
        expect(commands[0].x).toEqual(123);
        expect(commands[0].y).toEqual(456);
        expect(commands[1].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[1].relative).toEqual(true);
        expect(commands[1].x).toEqual(7890);
        expect(commands[1].y).toEqual(9876);
    });
    test('should work with nested separated coordinates', () => {
        const commands = new SVGPathData('T123 ,  456  \t,\n7890 \r\n 9876')
            .commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(false);
        expect(commands[0].x).toEqual(123);
        expect(commands[0].y).toEqual(456);
        expect(commands[1].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[1].relative).toEqual(false);
        expect(commands[1].x).toEqual(7890);
        expect(commands[1].y).toEqual(9876);
    });
    test('should work with multiple command declarations', () => {
        const commands = new SVGPathData('T123 ,  456  \t,\n7890 \r\n9876t123 ,  456  \t,\n7890 \r\n 9876').commands;
        expect(commands[0].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[0].relative).toEqual(false);
        expect(commands[0].x).toEqual(123);
        expect(commands[0].y).toEqual(456);
        expect(commands[1].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[1].relative).toEqual(false);
        expect(commands[1].x).toEqual(7890);
        expect(commands[1].y).toEqual(9876);
        expect(commands[2].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[2].relative).toEqual(true);
        expect(commands[2].x).toEqual(123);
        expect(commands[2].y).toEqual(456);
        expect(commands[3].type).toEqual(SVGPathData.SMOOTH_QUAD_TO);
        expect(commands[3].relative).toEqual(true);
        expect(commands[3].x).toEqual(7890);
        expect(commands[3].y).toEqual(9876);
    });
});
describe('Encoding smooth quadratic bezier curve to commands', () => {
    test('should work with one command', () => {
        expect(new SVGPathData('T-50.0032e-5 -60.0032e-5').encode()).toEqual('T-0.000500032 -0.000600032');
    });
    test('should work with several commands', () => {
        expect(new SVGPathData('T-50.0032e-5 -60.0032e-5t-50.0032e-5 -60.0032e-5T-50.0032e-5 -60.0032e-5 -50.0032e-5 -60.0032e-5').encode()).toEqual('T-0.000500032 -0.000600032t-0.000500032 -0.000600032T-0.000500032 -0.000600032T-0.000500032 -0.000600032');
    });
});
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