rochars / wavefile

 * Copyright (c) 2017 Rafael da Silva Rocha.

 * 

 */

describe('read 16bit file from disk and write to new file', function() {

    let fs = require("fs");

    let wavefile = require("../index.js");

    let path = "test/files/";

    let wBytes = fs.readFileSync(path + "16-bit-8kHz-noBext-mono.wav");

    let wav = new wavefile.WaveFile();

    wav.fromBytes(wBytes);

    let wav2 = new wavefile.WaveFile();

    let bytes3 = wav.toBytes();

    wav2.fromBytes(bytes3);

    let bytes4 = wav2.toBytes();

    fs.writeFileSync(path + "/out/16-bit-8kHz-noBext-mono.wav", bytes4);

    it("chunkId should be 'RIFF'",

            function() {

        assert.equal(wav2.chunkId, "RIFF");

    });

    it("subChunk1Id should be 'fmt '",

            function() {

        assert.equal(wav2.format, "WAVE");

    });

    it("subChunk1Size should be 16",

            function() {

        assert.equal(wav2.subChunk1Size, 16);

    });

    it("audioFormat should be 1 (PCM)",

            function() {

        assert.equal(wav2.audioFormat, 1);

    });

    it("numChannels should be 1",

            function() {

        assert.equal(wav2.numChannels, 1);

    });

    it("sampleRate should be 8000",

            function() {

        assert.equal(wav2.sampleRate, 8000);

    });

    it("byteRate should be 16000",

            function() {

        assert.equal(wav2.byteRate, 16000);

    });

    it("blockAlign should be 2",

            function() {

        assert.equal(wav2.blockAlign, 2);

    });

    it("bitsPerSample should be 16",

            function() {

        assert.equal(wav2.bitsPerSample, 16);

    });

    it("subChunk2Id should be 'data'",

            function() {

        assert.equal(wav2.subChunk2Id, 'data');

    });

    it("subChunk2Size should be > 0",

            function() {

        assert.ok(wav2.subChunk2Size > 0);

    });

    it("samples.length should be > 0",

            function() {

        assert.ok(wav2.samples_.length > 0);

    });

    it("samples_ on the new file should have the same length as in the original file",

            function() {

        assert.equal(wav2.samples_.length, wav.samples_.length);

    });

    it("samples_ on the new file should be same as the original file",

            function() {

        assert.deepEqual(wav2.samples_, wav.samples_);

    });

});