polybius.fyi/reveal.js/node_modules/has-binary/test.js

var hasBinary = require('./');
var assert = require('better-assert');
var fs = require('fs');

describe('has-binarydata', function(){

  it('should work with buffer', function(){
    assert(hasBinary(fs.readFileSync('./test.js')));
  });

  it('should work with an array that does not contain binary', function() {
    var arr = [1, 'cool', 2];
    assert(!hasBinary(arr));
  });

  it('should work with an array that contains a buffer', function() {
    var arr = [1, new Buffer('asdfasdf', 'utf8'), 2];
    assert(hasBinary(arr));
  });

  it('should work with an object that does not contain binary', function() {
    var ob = {a: 'a', b: [], c: 1234, toJSON: '{\"a\": \"a\"}'};
    assert(!hasBinary(ob));
  });

  it('should work with an object that contains a buffer', function() {
    var ob = {a: 'a', b: new Buffer('abc'), c: 1234, toJSON: '{\"a\": \"a\"}'};
    assert(hasBinary(ob));
  });

  it('should work with null', function() {
    assert(!hasBinary(null));
  });

  it('should work with undefined', function() {
    assert(!hasBinary(undefined));
  });

  it('should work with a complex object that contains undefined and no binary', function() {
    var ob = {
      x: ['a', 'b', 123],
      y: undefined,
      z: {a: 'x', b: 'y', c: 3, d: null},
      w: []
    };
    assert(!hasBinary(ob));
  });

  it('should work with a complex object that contains undefined and binary', function() {
    var ob = {
      x: ['a', 'b', 123],
      y: undefined,
      z: {a: 'x', b: 'y', c: 3, d: null},
      w: [],
      bin: new Buffer('xxx')
    };
    assert(hasBinary(ob));
  });

  if (global.ArrayBuffer) {
      it('should work with an ArrayBuffer', function() {
        assert(hasBinary(new ArrayBuffer()));
      });
  }

  if (global.Blob) {
     it('should work with a Blob', function() {
        assert(hasBinary(new Blob()));
     });
  }

});