60 lines
1.9 KiB
JavaScript
60 lines
1.9 KiB
JavaScript
import assert from 'assert';
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import {LazyArray, Pointer, uint8, uint16, DecodeStream, EncodeStream} from 'restructure';
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describe('LazyArray', function() {
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describe('decode', function() {
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it('should decode items lazily', function() {
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const stream = new DecodeStream(new Uint8Array([1, 2, 3, 4, 5]));
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const array = new LazyArray(uint8, 4);
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const arr = array.decode(stream);
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assert(!(arr instanceof Array));
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assert.equal(arr.length, 4);
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assert.equal(stream.pos, 4);
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assert.equal(arr.get(0), 1);
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assert.equal(arr.get(1), 2);
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assert.equal(arr.get(2), 3);
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assert.equal(arr.get(3), 4);
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assert.equal(arr.get(-1), null);
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assert.equal(arr.get(5), null);
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});
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it('should be able to convert to an array', function() {
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const stream = new DecodeStream(new Uint8Array([1, 2, 3, 4, 5]));
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const array = new LazyArray(uint8, 4);
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const arr = array.decode(stream);
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assert.deepEqual(arr.toArray(), [1, 2, 3, 4]);
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});
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it('should decode length as number before array', function() {
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const stream = new DecodeStream(new Uint8Array([4, 1, 2, 3, 4, 5]));
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const array = new LazyArray(uint8, uint8);
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const arr = array.decode(stream);
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assert.deepEqual(arr.toArray(), [1, 2, 3, 4]);
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});
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});
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describe('size', () =>
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it('should work with LazyArrays', function() {
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const stream = new DecodeStream(new Uint8Array([1, 2, 3, 4, 5]));
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const array = new LazyArray(uint8, 4);
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const arr = array.decode(stream);
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assert.equal(array.size(arr), 4);
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})
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);
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describe('encode', () =>
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it('should work with LazyArrays', function() {
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const array = new LazyArray(uint8, 4);
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const arr = array.fromBuffer(new Uint8Array([1, 2, 3, 4, 5]));
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const buffer = array.toBuffer(arr);
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assert.deepEqual(buffer, new Uint8Array([1, 2, 3, 4]));
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})
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);
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});
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