'use strict';

var test = require('tape');

// We should only test headless code here.
// http://stackoverflow.com/questions/21358015/error-jquery-requires-a-window-with-a-document#25622933

require('../src/ImageSequencer.js');

//require image files as DataURLs so they can be tested alike on browser and Node.
var sequencer = ImageSequencer({ ui: false });

var image = "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcUFhYaHSUfGhsjHBYWICwgIyYnKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wAARCAAQABADASIAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAf/xAAUEAEAAAAAAAAAAAAAAAAAAAAA/8QAFQEBAQAAAAAAAAAAAAAAAAAABgj/xAAUEQEAAAAAAAAAAAAAAAAAAAAA/9oADAMBAAIRAxEAPwCdABykX//Z";
var test_png = require('../examples/test.png.js');
var test_gif = require('../examples/test.gif.js');

sequencer.loadImages(image);
sequencer.addSteps(['do-nothing-pix','invert','invert']);

test("Preload", function(t) {
  sequencer.run(function(){
    t.end();
  });
});

test("Inverted image isn't identical", function (t) {
  t.notEqual(sequencer.images.image1.steps[1].output.src, sequencer.images.image1.steps[2].output.src);
  t.end();
});

test("Twice inverted image is identical to original image", function (t) {
  t.equal(sequencer.images.image1.steps[1].output.src, sequencer.images.image1.steps[3].output.src);
  t.end();
});

test("PixelManipulation works for PNG images", function (t) {
  sequencer.loadImages(test_png).addSteps('invert').run(function(out){
    t.equal(1,1)
    t.end();
  });
});

test("PixelManipulation works for GIF images", function (t) {
  sequencer.loadImages(test_gif).addSteps('invert').run(function(out){
    t.equal(1,1)
    t.end();
  });
});