autoOrient.js

// gm - Copyright Aaron Heckmann <aaron.heckmann+github@gmail.com> (MIT Licensed)

var assert = require('assert')

module.exports = function (_, dir, finish, gm) {
  if (!gm.integration)
    return finish();

  var filename = dir + '/autoOrient.jpg';

  gm(dir + '/originalSideways.jpg').orientation(function (err, o) {
    if (err) return finish(err);

    assert.equal('RightTop', o);
    assert.ok(!! this.data['Profile-EXIF'], 'No Profile-EXIF data found');

    // this image is sideways, but may be auto-oriented by modern OS's
    // try opening it in a browser to see its true orientation
    gm(dir + '/originalSideways.jpg')
    .autoOrient()
    .stream(function (err, stream) {
      if (err) return finish(err);

      gm(stream).identify(function (err, data) {
        if (err) return finish(err);

        assert.equal('Unknown', data.Orientation);
        assert.ok(! this.data['Profile-EXIF'], 'Profile-EXIF still exists');
        assert.equal('460x155', data.Geometry);

        finish(err);
      })
    })
  });
}