rochars / wavefile

 * Wavefile

 * Copyright (c) 2017 Rafael da Silva Rocha.

 * 

 */

describe("4-bit IMA ADPCM reading", function() {

    let fs = require("fs");

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

    let path = "test/files/";

    let wBytes = fs.readFileSync(path + '4bit-imaadpcm-8kHz-noBext-mono.wav');

    let wav = new wavefile.WaveFile(wBytes);

    it("chunkId should be 'RIFF'",

            function() {

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

    });

    it("subChunk1Id should be 'fmt '",

            function() {

        assert.equal(wav.subChunk1Id, "fmt ");

    });

    it("format should be 'WAVE'",

            function() {

        assert.equal(wav.subChunk1Size, 20);

    });

    it("audioFormat should be 17 (IMA ADPCM)",

            function() {

        assert.equal(wav.audioFormat, 17);

    });

    it("numChannels should be 1",

            function() {

        assert.equal(wav.numChannels, 1);

    });

    it("sampleRate should be 8000",

            function() {

        assert.equal(wav.sampleRate, 8000);

    });

    it("bitsPerSample should be 4",

            function() {

        assert.equal(wav.bitsPerSample, 4);

    });

    it("factChunkId should be 'fact'",

            function() {

        assert.equal(wav.factChunkId, 'fact');

    });

    it("factChunkSize should be 4",

            function() {

        assert.equal(wav.factChunkSize, 4);

    });

    it("subChunk2Id should be 'data'",

            function() {

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

    });

    it("subChunk2Size should be > 0",

            function() {

        assert.ok(wav.subChunk2Size > 0);

    });

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

            function() {

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

    });

});