require 'spec_helper'
describe Banzai::Filter::ImageLazyLoadFilter do
include FilterSpecHelper
def image(path)
%(
)
end
def image_with_class(path, class_attr = nil)
%(
)
end
it 'adds a class attribute' do
doc = filter(image('/uploads/e90decf88d8f96fe9e1389afc2e4a91f/test.jpg'))
expect(doc.at_css('img')['class']).to eq 'lazy'
end
it 'appends to the current class attribute' do
doc = filter(image_with_class('/uploads/e90decf88d8f96fe9e1389afc2e4a91f/test.jpg', 'test'))
expect(doc.at_css('img')['class']).to eq 'test lazy'
end
it 'transforms the image src to a data-src' do
doc = filter(image('/uploads/e90decf88d8f96fe9e1389afc2e4a91f/test.jpg'))
expect(doc.at_css('img')['data-src']).to eq '/uploads/e90decf88d8f96fe9e1389afc2e4a91f/test.jpg'
end
it 'works with external images' do
doc = filter(image('https://i.imgur.com/DfssX9C.jpg'))
expect(doc.at_css('img')['data-src']).to eq 'https://i.imgur.com/DfssX9C.jpg'
end
end