test/test.base64.js

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 *
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describe("base64", function () {
    var base64 = require('cordova/base64');

    it("can base64 encode strings correctly", function () {
        var arrayBuffer = new ArrayBuffer(6),
            view = new Uint8Array(arrayBuffer);
        for (var i = 0; i < view.length; i++) {
            view[i] = i;
        }
        expect(base64.fromArrayBuffer(arrayBuffer.slice(0,1))).toBe('AA==');
        expect(base64.fromArrayBuffer(arrayBuffer.slice(0,2))).toBe('AAE=');
        expect(base64.fromArrayBuffer(arrayBuffer.slice(0,3))).toBe('AAEC');
        expect(base64.fromArrayBuffer(arrayBuffer.slice(0,4))).toBe('AAECAw==');
        expect(base64.fromArrayBuffer(arrayBuffer.slice(0,5))).toBe('AAECAwQ=');
        expect(base64.fromArrayBuffer(arrayBuffer)).toBe('AAECAwQF');
    });

    it("can base64 encode a binary string in an ArrayBuffer", function () {
      var arrayBuffer = new ArrayBuffer(256),
          view = new Uint8Array(arrayBuffer);
          base64string = 'AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w=='

      for (var i = 0; i < view.length; i++) {
        view[i] = i;
      }

      expect(base64.fromArrayBuffer(arrayBuffer)).toBe(base64string);
    });

    it("can base64 encode an text string in an ArrayBuffer", function () {
        var orig = 'Some Awesome Test This Is!'
            , base64string = typeof btoa != 'undefined' ? btoa(orig) : new Buffer('Some Awesome Test This Is!', 'binary').toString('base64')
            , arrayBuffer = new ArrayBuffer(orig.length)
            , view = new Uint8Array(arrayBuffer);

        for (var i = 0; i < orig.length; i++) {
            view[i] = orig.charCodeAt(i);
        }

        expect(base64.fromArrayBuffer(arrayBuffer)).toBe(base64string);
    });
});