esc-pos-encoder-ionic
Version:
Create a set of commands that can be send to any receipt printer that supports ESC/POS. Support Ionic (Typescript)
234 lines (177 loc) • 9.6 kB
JavaScript
const EscPosEncoder = require ('../src/esc-pos-encoder');
const { createCanvas } = require('canvas');
const chai = require('chai');
const assert = chai.assert;
const expect = chai.expect;
const should = chai.should();
describe('EscPosEncoder', function() {
let encoder = new EscPosEncoder();
describe('text(hello)', function () {
let result = encoder.text('hello').encode();
it('should be [ 104, 101, 108, 108, 111 ]', function () {
assert.deepEqual(new Uint8Array([ 104, 101, 108, 108, 111 ]), result);
});
});
describe('text(hello).newline()', function () {
let result = encoder.text('hello').newline().encode();
it('should be [ 104, 101, 108, 108, 111, 10, 13 ]', function () {
assert.deepEqual(new Uint8Array([ 104, 101, 108, 108, 111, 10, 13 ]), result);
});
});
describe('line(hello)', function () {
let result = encoder.line('hello').encode();
it('should be [ 104, 101, 108, 108, 111, 10, 13 ]', function () {
assert.deepEqual(new Uint8Array([ 104, 101, 108, 108, 111, 10, 13 ]), result);
});
});
describe('text(héllo) - é -> ?', function () {
let result = encoder.text('héllo').encode();
it('should be [ 104, 63, 108, 108, 111 ]', function () {
assert.deepEqual(new Uint8Array([ 104, 63, 108, 108, 111 ]), result);
});
});
describe('codepage(cp437).text(héllo) - é -> 130', function () {
let result = encoder.codepage('cp437').text('héllo').encode();
it('should be [ 27, 116, 0, 104, 130, 108, 108, 111 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 116, 0, 104, 130, 108, 108, 111 ]), result);
});
});
describe('codepage(cp936).text(简体中文) - simplified chinese', function () {
let result = encoder.codepage('cp936').text('简体中文').encode();
it('should be [ 27, 116, 255, 28, 38, 188, 242, 204, 229, 214, 208, 206, 196, 28, 46 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 116, 255, 28, 38, 188, 242, 204, 229, 214, 208, 206, 196, 28, 46 ]), result);
});
});
describe('codepage(win1252).text(héllo) - é -> 233', function () {
let result = encoder.codepage('win1252').text('héllo').encode();
it('should be [ 27, 116, 71, 104, 233, 108, 108, 111 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 116, 71, 104, 233, 108, 108, 111 ]), result);
});
});
describe('codepage(utf8).text(héllo)', function () {
it('should throw an "Codepage not supported by printer" error', function () {
expect(function(){
let result = encoder.codepage('utf8').text('héllo').encode();
}).to.throw('Codepage not supported by printer');
});
});
describe('codepage(unknown).text(héllo)', function () {
it('should throw an "Unknown codepage" error', function () {
expect(function(){
let result = encoder.codepage('unknown').text('héllo').encode();
}).to.throw('Unknown codepage');
});
});
describe('bold(true).text(hello).bold(false)', function () {
let result = encoder.bold(true).text('hello').bold(false).encode();
it('should be [ 27, 69, 1, ..., 27, 69, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 69, 1, 104, 101, 108, 108, 111, 27, 69, 0 ]), result);
});
});
describe('bold().text(hello).bold()', function () {
let result = encoder.bold().text('hello').bold().encode();
it('should be [ 27, 69, 1, ..., 27, 69, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 69, 1, 104, 101, 108, 108, 111, 27, 69, 0 ]), result);
});
});
describe('italic().text(hello).italic()', function () {
let result = encoder.italic().text('hello').italic().encode();
it('should be [ 27, 69, 1, ..., 27, 69, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 52, 1, 104, 101, 108, 108, 111, 27, 52, 0 ]), result);
});
});
describe('underline(true).text(hello).underline(false)', function () {
let result = encoder.underline(true).text('hello').underline(false).encode();
it('should be [ 27, 45, 1, ..., 27, 45, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 45, 1, 104, 101, 108, 108, 111, 27, 45, 0 ]), result);
});
});
describe('underline().text(hello).underline()', function () {
let result = encoder.underline().text('hello').underline().encode();
it('should be [ 27, 45, 1, ..., 27, 45, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 45, 1, 104, 101, 108, 108, 111, 27, 45, 0 ]), result);
});
});
describe('align(left).line(hello)', function () {
let result = encoder.align('left').line('hello').encode();
it('should be [ 27, 97, 0, ..., 10, 13 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 97, 0, 104, 101, 108, 108, 111, 10, 13 ]), result);
});
});
describe('align(center).line(hello)', function () {
let result = encoder.align('center').line('hello').encode();
it('should be [ 27, 97, 1, ..., 10, 13 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 97, 1, 104, 101, 108, 108, 111, 10, 13 ]), result);
});
});
describe('align(right).line(hello)', function () {
let result = encoder.align('right').line('hello').encode();
it('should be [ 27, 97, 2, ..., 10, 13 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 97, 2, 104, 101, 108, 108, 111, 10, 13 ]), result);
});
});
describe('qrcode(https://nielsleenheer.com)', function () {
let result = encoder.qrcode('https://nielsleenheer.com').encode();
it('should be [ 10, 29, 40, 107, 4, 0, 49, 65, 50, 0, 29, 40, 107, 3, 0, ... ]', function () {
assert.deepEqual(new Uint8Array([ 10, 29, 40, 107, 4, 0, 49, 65, 50, 0, 29, 40, 107, 3, 0, 49, 67, 6, 29, 40, 107, 3, 0, 49, 69, 49, 29, 40, 107, 28, 0, 49, 80, 48, 104, 116, 116, 112, 115, 58, 47, 47, 110, 105, 101, 108, 115, 108, 101, 101, 110, 104, 101, 101, 114, 46, 99, 111, 109, 29, 40, 107, 3, 0, 49, 81, 48 ]), result);
});
});
describe('qrcode(https://nielsleenheer.com, 1, 8, h)', function () {
let result = encoder.qrcode('https://nielsleenheer.com', 1, 8, 'h').encode();
it('should be [ 10, 29, 40, 107, 4, 0, 49, 65, 49, 0, 29, 40, 107, 3, 0, ... ]', function () {
assert.deepEqual(new Uint8Array([ 10, 29, 40, 107, 4, 0, 49, 65, 49, 0, 29, 40, 107, 3, 0, 49, 67, 8, 29, 40, 107, 3, 0, 49, 69, 51, 29, 40, 107, 28, 0, 49, 80, 48, 104, 116, 116, 112, 115, 58, 47, 47, 110, 105, 101, 108, 115, 108, 101, 101, 110, 104, 101, 101, 114, 46, 99, 111, 109, 29, 40, 107, 3, 0, 49, 81, 48 ]), result);
});
});
describe('barcode(3130630574613, ean13, 60)', function () {
let result = encoder.barcode('3130630574613', 'ean13', 60).encode();
it('should be [ 29, 104, 60, 29, 119, 3, 29, 107, 2, ... ]', function () {
assert.deepEqual(new Uint8Array([ 29, 104, 60, 29, 119, 3, 29, 107, 2, 51, 49, 51, 48, 54, 51, 48, 53, 55, 52, 54, 49, 51, 0 ]), result);
});
});
describe('image(canvas, 8, 8) - with a black pixel at 0,0', function () {
let canvas = createCanvas(8, 8);
let context = canvas.getContext('2d');
context.fillStyle = 'rgba(0, 0, 0, 1)';
context.fillRect( 0, 0, 1, 1 );
let result = encoder.image(canvas, 8, 8).encode();
it('should be [ 29, 118, 48, 0, 1, 0, 8, 0, 128, 0, 0, 0, 0, 0, 0, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 29, 118, 48, 0, 1, 0, 8, 0, 128, 0, 0, 0, 0, 0, 0, 0 ]), result);
});
});
describe('cut()', function () {
let result = encoder.cut().encode();
it('should be [ 29, 86, 00 ]', function () {
assert.deepEqual(new Uint8Array([ 29, 86, 00 ]), result);
});
});
describe('cut(full)', function () {
let result = encoder.cut('full').encode();
it('should be [ 29, 86, 00 ]', function () {
assert.deepEqual(new Uint8Array([ 29, 86, 00 ]), result);
});
});
describe('cut(partial)', function () {
let result = encoder.cut('partial').encode();
it('should be [ 29, 86, 01 ]', function () {
assert.deepEqual(new Uint8Array([ 29, 86, 01 ]), result);
});
});
describe('raw([ 0x1c, 0x2e ])', function () {
let result = encoder.raw([ 0x1c, 0x2e ]).encode();
it('should be [ 28, 46 ]', function () {
assert.deepEqual(new Uint8Array([ 28, 46 ]), result);
});
});
describe('beeper()', function () {
let result = encoder.beeper().encode();
it('should be [ 27, 66, 5, 1 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 66, 5, 1 ]), result);
});
});
describe('openCashDrawer()', function () {
let result = encoder.openCashDrawer().encode();
it('should be [ 27, 112, 0 ]', function () {
assert.deepEqual(new Uint8Array([ 27, 112, 0 ]), result);
});
});
});