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test.tight.js
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const expect = chai.expect;
import Websock from '../core/websock.js';
import Display from '../core/display.js';
import TightDecoder from '../core/decoders/tight.js';
import FakeWebSocket from './fake.websocket.js';
function testDecodeRect(decoder, x, y, width, height, data, display, depth) {
let sock;
sock = new Websock;
sock.open("ws://example.com");
sock.on('message', () => {
decoder.decodeRect(x, y, width, height, sock, display, depth);
});
// Empty messages are filtered at multiple layers, so we need to
// do a direct call
if (data.length === 0) {
decoder.decodeRect(x, y, width, height, sock, display, depth);
} else {
sock._websocket._receiveData(new Uint8Array(data));
}
display.flip();
}
describe('Tight Decoder', function () {
let decoder;
let display;
before(FakeWebSocket.replace);
after(FakeWebSocket.restore);
beforeEach(function () {
decoder = new TightDecoder();
display = new Display(document.createElement('canvas'));
display.resize(4, 4);
});
it('should handle fill rects', function () {
testDecodeRect(decoder, 0, 0, 4, 4,
[0x80, 0xff, 0x88, 0x44],
display, 24);
let targetData = new Uint8Array([
0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255,
0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255,
0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255,
0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255, 0xff, 0x88, 0x44, 255,
]);
expect(display).to.have.displayed(targetData);
});
it('should handle uncompressed copy rects', function () {
let blueData = [ 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0xff ];
let greenData = [ 0x00, 0x00, 0xff, 0x00, 0x00, 0xff, 0x00 ];
testDecodeRect(decoder, 0, 0, 2, 1, blueData, display, 24);
testDecodeRect(decoder, 0, 1, 2, 1, blueData, display, 24);
testDecodeRect(decoder, 2, 0, 2, 1, greenData, display, 24);
testDecodeRect(decoder, 2, 1, 2, 1, greenData, display, 24);
testDecodeRect(decoder, 0, 2, 2, 1, greenData, display, 24);
testDecodeRect(decoder, 0, 3, 2, 1, greenData, display, 24);
testDecodeRect(decoder, 2, 2, 2, 1, blueData, display, 24);
testDecodeRect(decoder, 2, 3, 2, 1, blueData, display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle compressed copy rects', function () {
let data = [
// Control byte
0x00,
// Pixels (compressed)
0x15,
0x78, 0x9c, 0x63, 0x60, 0xf8, 0xcf, 0x00, 0x44,
0x60, 0x82, 0x01, 0x99, 0x8d, 0x29, 0x02, 0xa6,
0x00, 0x7e, 0xbf, 0x0f, 0xf1 ];
testDecodeRect(decoder, 0, 0, 4, 4, data, display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle uncompressed mono rects', function () {
let data = [
// Control bytes
0x40, 0x01,
// Palette
0x01, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00,
// Pixels
0x30, 0x30, 0xc0, 0xc0 ];
testDecodeRect(decoder, 0, 0, 4, 4, data, display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle compressed mono rects', function () {
display.resize(4, 12);
let data = [
// Control bytes
0x40, 0x01,
// Palette
0x01, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00,
// Pixels (compressed)
0x0e,
0x78, 0x9c, 0x33, 0x30, 0x38, 0x70, 0xc0, 0x00,
0x8a, 0x01, 0x21, 0x3c, 0x05, 0xa1 ];
testDecodeRect(decoder, 0, 0, 4, 12, data, display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle uncompressed palette rects', function () {
let data1 = [
// Control bytes
0x40, 0x01,
// Palette
0x02, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00,
// Pixels
0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x01 ];
let data2 = [
// Control bytes
0x40, 0x01,
// Palette
0x02, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00,
// Pixels
0x01, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00 ];
testDecodeRect(decoder, 0, 0, 4, 2, data1, display, 24);
testDecodeRect(decoder, 0, 2, 4, 2, data2, display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle compressed palette rects', function () {
let data = [
// Control bytes
0x40, 0x01,
// Palette
0x02, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00,
// Pixels (compressed)
0x12,
0x78, 0x9c, 0x63, 0x60, 0x60, 0x64, 0x64, 0x00,
0x62, 0x08, 0xc9, 0xc0, 0x00, 0x00, 0x00, 0x54,
0x00, 0x09 ];
testDecodeRect(decoder, 0, 0, 4, 4, data, display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it.skip('should handle uncompressed gradient rects', function () {
// Not implemented yet
});
it.skip('should handle compressed gradient rects', function () {
// Not implemented yet
});
it('should handle empty copy rects', function () {
display.fillRect(0, 0, 4, 4, [ 0x00, 0x00, 0xff ]);
display.fillRect(2, 0, 2, 2, [ 0x00, 0xff, 0x00 ]);
display.fillRect(0, 2, 2, 2, [ 0x00, 0xff, 0x00 ]);
testDecodeRect(decoder, 1, 2, 0, 0, [ 0x00 ], display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle empty palette rects', function () {
display.fillRect(0, 0, 4, 4, [ 0x00, 0x00, 0xff ]);
display.fillRect(2, 0, 2, 2, [ 0x00, 0xff, 0x00 ]);
display.fillRect(0, 2, 2, 2, [ 0x00, 0xff, 0x00 ]);
testDecodeRect(decoder, 1, 2, 0, 0,
[ 0x40, 0x01, 0x01,
0xff, 0xff, 0xff,
0xff, 0xff, 0xff ], display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle empty fill rects', function () {
display.fillRect(0, 0, 4, 4, [ 0x00, 0x00, 0xff ]);
display.fillRect(2, 0, 2, 2, [ 0x00, 0xff, 0x00 ]);
display.fillRect(0, 2, 2, 2, [ 0x00, 0xff, 0x00 ]);
testDecodeRect(decoder, 1, 2, 0, 0,
[ 0x80, 0xff, 0xff, 0xff ], display, 24);
let targetData = new Uint8Array([
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
]);
expect(display).to.have.displayed(targetData);
});
it('should handle JPEG rects', function (done) {
let data = [
// Control bytes
0x90, 0xd6, 0x05,
// JPEG data
0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46,
0x49, 0x46, 0x00, 0x01, 0x01, 0x01, 0x00, 0x48,
0x00, 0x48, 0x00, 0x00, 0xff, 0xfe, 0x00, 0x13,
0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20,
0x77, 0x69, 0x74, 0x68, 0x20, 0x47, 0x49, 0x4d,
0x50, 0xff, 0xdb, 0x00, 0x43, 0x00, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0xff, 0xdb,
0x00, 0x43, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0xff, 0xc2, 0x00, 0x11, 0x08,
0x00, 0x04, 0x00, 0x04, 0x03, 0x01, 0x11, 0x00,
0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xc4,
0x00, 0x14, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x07, 0xff, 0xc4, 0x00, 0x14,
0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x08, 0xff, 0xda, 0x00, 0x0c, 0x03, 0x01,
0x00, 0x02, 0x10, 0x03, 0x10, 0x00, 0x00, 0x01,
0x1e, 0x0a, 0xa7, 0x7f, 0xff, 0xc4, 0x00, 0x14,
0x10, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x05, 0xff, 0xda, 0x00, 0x08, 0x01, 0x01,
0x00, 0x01, 0x05, 0x02, 0x5d, 0x74, 0x41, 0x47,
0xff, 0xc4, 0x00, 0x1f, 0x11, 0x00, 0x01, 0x04,
0x02, 0x02, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x04, 0x05,
0x07, 0x08, 0x14, 0x16, 0x03, 0x15, 0x17, 0x25,
0x26, 0xff, 0xda, 0x00, 0x08, 0x01, 0x03, 0x01,
0x01, 0x3f, 0x01, 0xad, 0x35, 0xa6, 0x13, 0xb8,
0x10, 0x98, 0x5d, 0x8a, 0xb1, 0x41, 0x7e, 0x43,
0x99, 0x24, 0x3d, 0x8f, 0x70, 0x30, 0xd8, 0xcb,
0x44, 0xbb, 0x7d, 0x48, 0xb5, 0xf8, 0x18, 0x7f,
0xe7, 0xc1, 0x9f, 0x86, 0x45, 0x9b, 0xfa, 0xf1,
0x61, 0x96, 0x46, 0xbf, 0x56, 0xc8, 0x8b, 0x2b,
0x0b, 0x35, 0x6e, 0x4b, 0x8a, 0x95, 0x6a, 0xf9,
0xff, 0x00, 0xff, 0xc4, 0x00, 0x1f, 0x11, 0x00,
0x01, 0x04, 0x02, 0x02, 0x03, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
0x02, 0x04, 0x05, 0x12, 0x13, 0x14, 0x01, 0x06,
0x11, 0x22, 0x23, 0xff, 0xda, 0x00, 0x08, 0x01,
0x02, 0x01, 0x01, 0x3f, 0x01, 0x85, 0x85, 0x8c,
0xec, 0x31, 0x8d, 0xa6, 0x26, 0x1b, 0x6e, 0x48,
0xbc, 0xcd, 0xb0, 0xe3, 0x33, 0x86, 0xf9, 0x35,
0xdc, 0x15, 0xa8, 0xbe, 0x4d, 0x4a, 0x10, 0x22,
0x80, 0x00, 0x91, 0xe8, 0x24, 0xda, 0xb6, 0x57,
0x95, 0xf2, 0xa5, 0x73, 0xff, 0xc4, 0x00, 0x1e,
0x10, 0x00, 0x01, 0x04, 0x03, 0x00, 0x03, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x03, 0x01, 0x02, 0x04, 0x12, 0x05, 0x11,
0x13, 0x14, 0x22, 0x23, 0xff, 0xda, 0x00, 0x08,
0x01, 0x01, 0x00, 0x06, 0x3f, 0x02, 0x91, 0x89,
0xc4, 0xc8, 0xf1, 0x60, 0x45, 0xe5, 0xc0, 0x1c,
0x80, 0x7a, 0x77, 0x00, 0xe4, 0x97, 0xeb, 0x24,
0x66, 0x33, 0xac, 0x63, 0x11, 0xfe, 0xe4, 0x76,
0xad, 0x56, 0xe9, 0xa8, 0x88, 0x9f, 0xff, 0xc4,
0x00, 0x14, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xff, 0xda, 0x00, 0x08,
0x01, 0x01, 0x00, 0x01, 0x3f, 0x21, 0x68, 0x3f,
0x92, 0x17, 0x81, 0x1f, 0x7f, 0xff, 0xda, 0x00,
0x0c, 0x03, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00,
0x00, 0x00, 0x10, 0x5f, 0xff, 0xc4, 0x00, 0x14,
0x11, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xda, 0x00, 0x08, 0x01, 0x03,
0x01, 0x01, 0x3f, 0x10, 0x03, 0xeb, 0x11, 0xe4,
0xa7, 0xe3, 0xff, 0x00, 0xff, 0xc4, 0x00, 0x14,
0x11, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xda, 0x00, 0x08, 0x01, 0x02,
0x01, 0x01, 0x3f, 0x10, 0x6b, 0xd3, 0x02, 0xdc,
0x9a, 0xf4, 0xff, 0x00, 0xff, 0xc4, 0x00, 0x14,
0x10, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xda, 0x00, 0x08, 0x01, 0x01,
0x00, 0x01, 0x3f, 0x10, 0x62, 0x7b, 0x3a, 0xd0,
0x3f, 0xeb, 0xff, 0x00, 0xff, 0xd9,
];
testDecodeRect(decoder, 0, 0, 4, 4, data, display, 24);
let targetData = new Uint8Array([
0xff, 0x00, 0x00, 255, 0xff, 0x00, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0xff, 0x00, 0x00, 255, 0xff, 0x00, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0xff, 0x00, 0x00, 255, 0xff, 0x00, 0x00, 255,
0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0xff, 0x00, 0x00, 255, 0xff, 0x00, 0x00, 255
]);
// Browsers have rounding errors, so we need an approximate
// comparing function
function almost(a, b) {
let diff = Math.abs(a - b);
return diff < 5;
}
display.onflush = () => {
expect(display).to.have.displayed(targetData, almost);
done();
};
display.flush();
});
});