require "test_helper"

require "image_processing/vips"

require "pathname"

describe "ImageProcessing::Builder" do

before do

@portrait = fixture_image("portrait.jpg")

end

it "instruments pipeline execution" do

pipeline = ImageProcessing::Vips

.source(@portrait)

.loader(shrink: 2)

.resize_to_limit(500, 500)

.saver(strip: true)

.convert("png")

instrumenter_called = false

pipeline = pipeline.instrumenter do |**options, &block|

instrumenter_called = true

assert_equal @portrait, options[:source]

assert_equal Hash[shrink: 2], options[:loader]

assert_equal [[:resize_to_limit, [500, 500]]], options[:operations]

assert_equal Hash[strip: true], options[:saver]

assert_equal "png", options[:format]

block.call

end

pipeline.call

assert instrumenter_called

end

it "handles instrumenter not returning pipeline result" do

pipeline = ImageProcessing::Vips

.source(@portrait)

.instrumenter { |**, &block| block.call and :foo }

assert_kind_of Tempfile, pipeline.call

end

end