test/corrode-terminated-buffer.test.js

const { expect } = require('chai');
const Corrode = require('../src');

/** @test {Corrode#terminatedBuffer} */
describe('Corrode#terminatedBuffer', () => {
    beforeEach(function(){
        this.base = new Corrode();
        this.eqArray = require('./helpers/asserts').eqArray.bind(this);
        this.eqMultiArray = require('./helpers/asserts').eqMultiArray.bind(this);
    });

    it('retrieves a terminated buffer', function(done){
        this.base
            .terminatedBuffer('buffer_1')
            .terminatedBuffer('buffer_2');

        this.eqArray([3, 5, 7, 0, 9, 1, 2, 4, 0, 6, 8], done, {
            buffer_1: Buffer.from([3, 5, 7]),
            buffer_2: Buffer.from([9, 1, 2, 4])
        });
    });

    it('retrieves a terminated buffer spanned over multiple buffers', function(done){
        this.base
            .terminatedBuffer('buffer_1')
            .terminatedBuffer('buffer_2');

        this.eqMultiArray([[2, 4, 6], [8], [0], [1, 3], [5, 7], [0, 0]], done, {
            buffer_1: Buffer.from([2, 4, 6, 8]),
            buffer_2: Buffer.from([1, 3, 5, 7])
        });
    });

    it('retrieves a terminated buffer spanned over multiple buffers with options', function(done){
        this.base
            .terminatedBuffer('buffer_1', 8, false)
            .terminatedBuffer('buffer_2', 3)
            .uint8('terminator')
            .terminatedBuffer('buffer_3', 'terminator');

        this.eqMultiArray([[2, 4, 6], [8], [0], [1, 3], [5, 7], [0, 0, 2, 5]], done, {
            buffer_1: Buffer.from([2, 4, 6, 8]),
            buffer_2: Buffer.from([0, 1]),
            terminator: 5,
            buffer_3: Buffer.from([7, 0, 0, 2])
        });
    });

    it('retrieves a terminated buffer in a complex parser', function(done){
        this.base
            .uint8('terminator_1')
            .loop('buffers', function(end, discard, i){
                if(i >= 3){
                    return end();
                }

                this
                    .uint8('prefix')
                    .terminatedBuffer('buffer', this.varStack.peek().terminator_1)
            })
            .terminatedBuffer('buffer_1', 'terminator_1')
            .terminatedBuffer('buffer_2', 3);

        this.eqMultiArray([[2, 7, 4, 6], [8, 2], [7, 0], [1, 2, 7, 3], [5, 7, 2], [0, 0, 2, 5, 6, 3]], done, {
            terminator_1: 2,
            buffers: [{
                prefix: 7,
                buffer: Buffer.from([4, 6, 8])
            }, {
                prefix: 7,
                buffer: Buffer.from([0, 1])
            }, {
                prefix: 7,
                buffer: Buffer.from([3, 5, 7])
            }],
            buffer_1: Buffer.from([0, 0]),
            buffer_2: Buffer.from([5, 6])
        });
    });
});