svg-pathdata
Version:
Manipulate SVG path data (path[d] attribute content) simply and efficiently.
118 lines • 7.17 kB
JavaScript
import { describe, test, expect } from '@jest/globals';
import { SVGPathData } from '../index.js';
describe('Parsing curve to commands', () => {
test('should not work when badly declared', () => {
expect(() => new SVGPathData('C')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10 10')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10 10 10')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10 10 10 10')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10 10 10 10 10')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10 10 10 10 10 10 10 10')).toThrow(new SyntaxError('Unterminated command at the path end.'));
expect(() => new SVGPathData('C10 10 10C10 10 10 10 10 10')).toThrow(new SyntaxError('Unterminated command at index 9.'));
});
test('should work with comma separated coordinates', () => {
const commands = new SVGPathData('C123,456 789,987 654,321').commands;
expect(commands[0].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[0].relative).toEqual(false);
expect(commands[0].x1).toEqual(123);
expect(commands[0].y1).toEqual(456);
expect(commands[0].x2).toEqual(789);
expect(commands[0].y2).toEqual(987);
expect(commands[0].x).toEqual(654);
expect(commands[0].y).toEqual(321);
});
test('should work with space separated coordinates', () => {
const commands = new SVGPathData('C123 456 789 987 654 321').commands;
expect(commands[0].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[0].relative).toEqual(false);
expect(commands[0].x1).toEqual(123);
expect(commands[0].y1).toEqual(456);
expect(commands[0].x2).toEqual(789);
expect(commands[0].y2).toEqual(987);
expect(commands[0].x).toEqual(654);
expect(commands[0].y).toEqual(321);
});
test('should work with nested separated complexer coordinate pairs', () => {
const commands = new SVGPathData('C-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5').commands;
expect(commands[0].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[0].relative).toEqual(false);
expect(commands[0].x1).toEqual(-10.0032e-5);
expect(commands[0].y1).toEqual(-20.0032e-5);
expect(commands[0].x2).toEqual(-30.0032e-5);
expect(commands[0].y2).toEqual(-40.0032e-5);
expect(commands[0].x).toEqual(-50.0032e-5);
expect(commands[0].y).toEqual(-60.0032e-5);
});
test('should work with multiple pairs of coordinates', () => {
const commands = new SVGPathData(`
C-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5
-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5
-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5
`).commands;
expect(commands[0].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[0].relative).toEqual(false);
expect(commands[0].x1).toEqual(-10.0032e-5);
expect(commands[0].y1).toEqual(-20.0032e-5);
expect(commands[0].x2).toEqual(-30.0032e-5);
expect(commands[0].y2).toEqual(-40.0032e-5);
expect(commands[0].x).toEqual(-50.0032e-5);
expect(commands[0].y).toEqual(-60.0032e-5);
expect(commands[1].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[1].relative).toEqual(false);
expect(commands[1].x1).toEqual(-10.0032e-5);
expect(commands[1].y1).toEqual(-20.0032e-5);
expect(commands[1].x2).toEqual(-30.0032e-5);
expect(commands[1].y2).toEqual(-40.0032e-5);
expect(commands[1].x).toEqual(-50.0032e-5);
expect(commands[1].y).toEqual(-60.0032e-5);
expect(commands[2].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[2].relative).toEqual(false);
expect(commands[2].x1).toEqual(-10.0032e-5);
expect(commands[2].y1).toEqual(-20.0032e-5);
expect(commands[2].x2).toEqual(-30.0032e-5);
expect(commands[2].y2).toEqual(-40.0032e-5);
expect(commands[2].x).toEqual(-50.0032e-5);
expect(commands[2].y).toEqual(-60.0032e-5);
});
test('should work with multiple declared pairs of coordinates', () => {
const commands = new SVGPathData(`
C-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5
c-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5
C-10.0032e-5,-20.0032e-5 -30.0032e-5,-40.0032e-5 -50.0032e-5,-60.0032e-5
`).commands;
expect(commands[0].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[0].relative).toEqual(false);
expect(commands[0].x1).toEqual(-10.0032e-5);
expect(commands[0].y1).toEqual(-20.0032e-5);
expect(commands[0].x2).toEqual(-30.0032e-5);
expect(commands[0].y2).toEqual(-40.0032e-5);
expect(commands[0].x).toEqual(-50.0032e-5);
expect(commands[0].y).toEqual(-60.0032e-5);
expect(commands[1].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[1].relative).toEqual(true);
expect(commands[1].x1).toEqual(-10.0032e-5);
expect(commands[1].y1).toEqual(-20.0032e-5);
expect(commands[1].x2).toEqual(-30.0032e-5);
expect(commands[1].y2).toEqual(-40.0032e-5);
expect(commands[1].x).toEqual(-50.0032e-5);
expect(commands[1].y).toEqual(-60.0032e-5);
expect(commands[2].type).toEqual(SVGPathData.CURVE_TO);
expect(commands[2].relative).toEqual(false);
expect(commands[2].x1).toEqual(-10.0032e-5);
expect(commands[2].y1).toEqual(-20.0032e-5);
expect(commands[2].x2).toEqual(-30.0032e-5);
expect(commands[2].y2).toEqual(-40.0032e-5);
expect(commands[2].x).toEqual(-50.0032e-5);
expect(commands[2].y).toEqual(-60.0032e-5);
});
});
describe('Encoding curve to commands', () => {
test('should work with one command', () => {
expect(new SVGPathData('C-10.0032e-5 -20.0032e-5 -30.0032e-5 -40.0032e-5 -50.0032e-5 -60.0032e-5').encode()).toEqual('C-0.000100032 -0.000200032 -0.000300032 -0.000400032 -0.000500032 -0.000600032');
});
test('should work with several commands', () => {
expect(new SVGPathData('C-10.0032e-5 -20.0032e-5 -30.0032e-5 -40.0032e-5 -50.0032e-5 -60.0032e-5C-10.0032e-5 -20.0032e-5 -30.0032e-5 -40.0032e-5 -50.0032e-5 -60.0032e-5C-10.0032e-5 -20.0032e-5 -30.0032e-5 -40.0032e-5 -50.0032e-5 -60.0032e-5').encode()).toEqual('C-0.000100032 -0.000200032 -0.000300032 -0.000400032 -0.000500032 -0.000600032C-0.000100032 -0.000200032 -0.000300032 -0.000400032 -0.000500032 -0.000600032C-0.000100032 -0.000200032 -0.000300032 -0.000400032 -0.000500032 -0.000600032');
});
});
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