mirror of
https://github.com/scratchfoundation/scratch-sb1-converter.git
synced 2024-11-27 18:15:48 -05:00
94 lines
2.9 KiB
JavaScript
94 lines
2.9 KiB
JavaScript
const test = require('tap').test;
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const {ByteStream} = require('../../src/coders/byte-stream');
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const {Packet} = require('../../src/coders/byte-packets');
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const {Uint8} = require('../../src/coders/byte-primitives');
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test('spec', t => {
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t.type(ByteStream, 'function');
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const buffer = new ArrayBuffer(128);
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const instance = new ByteStream(buffer, 0);
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t.type(instance.buffer, 'object');
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t.type(instance.position, 'number');
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t.type(instance.uint8a, 'object');
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t.type(instance.read, 'function');
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t.type(instance.readStruct, 'function');
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t.type(instance.resize, 'function');
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t.type(instance.write, 'function');
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t.type(instance.writeStruct, 'function');
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t.type(instance.writeBytes, 'function');
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t.end();
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});
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test('read', t => {
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const buffer = new Uint8Array([0, 1, 255]).buffer;
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const instance = new ByteStream(buffer);
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t.equal(instance.read(Uint8), 0);
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t.equal(instance.read(Uint8), 1);
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t.equal(instance.read(Uint8), 255);
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t.type(instance.read(Uint8), 'undefined');
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t.end();
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});
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test('readStruct', t => {
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const buffer = new Uint8Array([0, 1, 10, 255]).buffer;
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const instance = new ByteStream(buffer);
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const result = instance.readStruct(Packet);
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t.type(result, 'object');
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// @todo This should use a "Packet" subclass and validate the contents of
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// the returned packet
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t.end();
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});
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test('resize', t => {
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const buffer = new Uint8Array([]).buffer;
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const instance = new ByteStream(buffer);
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t.equal(instance.buffer.byteLength, 0);
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instance.resize(8);
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t.equal(instance.buffer.byteLength, 8);
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instance.resize(2);
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t.equal(instance.buffer.byteLength, 8);
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t.end();
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});
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test('write', t => {
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const buffer = new Uint8Array([0, 1, 255]).buffer;
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const instance = new ByteStream(buffer);
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t.equal(instance.read(Uint8), 0);
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t.equal(instance.read(Uint8), 1);
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t.equal(instance.read(Uint8), 255);
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t.equal(instance.write(Uint8, 255), 255);
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t.type(instance.read(Uint8), 'undefined');
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t.end();
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});
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test('writeStruct', t => {
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const buffer = new Uint8Array([0, 1, 255]).buffer;
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const bytes = new Uint8Array([0, 0, 0]);
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const instance = new ByteStream(buffer);
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const result = instance.writeStruct(Packet, bytes);
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t.type(result, 'object');
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// @todo This should use a "Packet" subclass and validate the contents of
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// the returned packet
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t.end();
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});
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test('writeBytes', t => {
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const buffer = new Uint8Array([0, 1, 255]).buffer;
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const bytes = new Uint8Array([0, 0, 0]);
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const instance = new ByteStream(buffer);
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const result = instance.writeBytes(bytes);
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t.type(result, 'object');
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t.equal(result, bytes);
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t.end();
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});
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test('writeBytes (invalid)', t => {
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const buffer = new Uint8Array([0, 1, 255]).buffer;
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const instance = new ByteStream(buffer);
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t.throws(() => {
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instance.writeBytes([0, 0, 0]);
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});
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t.end();
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});
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