Class: Kontrast::PageComparator

Inherits:
Object
  • Object
show all
Includes:
Magick
Defined in:
lib/kontrast/page_comparator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PageComparator

Returns a new instance of PageComparator.



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# File 'lib/kontrast/page_comparator.rb', line 7

def initialize
    @path = Kontrast.path

    # This is where failed diffs will be stored
    @diffs = {}
end

Instance Attribute Details

#diffs ⇒ Object (readonly)

Returns the value of attribute diffs.



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# File 'lib/kontrast/page_comparator.rb', line 5

def diffs
  @diffs
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/kontrast/page_comparator.rb', line 5

def path
  @path
end

Instance Method Details

#diff(test) ⇒ Object 



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# File 'lib/kontrast/page_comparator.rb', line 22

def diff(test)

    image_helper = Kontrast::ImageHelper.new(
        test_image_path(test),
        production_image_path(test),
    )

    # In order for images to be diff'ed, they need to have the same dimensions
    print "Cropping... "
    image_helper.crop(test.width)

    diff = image_helper.compare(test.to_s, "diff.png")

    # If the images are different, let the class know about it so that it gets added to the manifest
    if diff > 0
        @diffs["#{test}"] = {
            type: 'page',
            width: test.width,
            name: test.name,
            diff: diff,
        }
    end
end

#production_image_path(test) ⇒ Object 



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# File 'lib/kontrast/page_comparator.rb', line 18

def production_image_path(test)
    return "#{@path}/#{test}/production.png"
end

#test_image_path(test) ⇒ Object 



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# File 'lib/kontrast/page_comparator.rb', line 14

def test_image_path(test)
    return "#{@path}/#{test}/test.png"
end