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# frozen_string_literal: true
require "test_helper"
require "database/setup"
class ActiveStorage::VariantTest < ActiveSupport::TestCase
test "resized variation of JPEG blob" do
blob = create_file_blob(filename: "racecar.jpg")
variant = blob.variant(resize: "100x100").processed
assert_match(/racecar\.jpg/, variant.service_url)
image = read_image(variant)
assert_equal 100, image.width
assert_equal 67, image.height
end
test "resized and monochrome variation of JPEG blob" do
blob = create_file_blob(filename: "racecar.jpg")
variant = blob.variant(resize: "100x100", monochrome: true).processed
assert_match(/racecar\.jpg/, variant.service_url)
image = read_image(variant)
assert_equal 100, image.width
assert_equal 67, image.height
assert_match(/Gray/, image.colorspace)
end
test "center-weighted crop of JPEG blob" do
blob = create_file_blob(filename: "racecar.jpg")
variant = blob.variant(combine_options: {
gravity: "center",
resize: "100x100^",
crop: "100x100+0+0",
}).processed
assert_match(/racecar\.jpg/, variant.service_url)
image = read_image(variant)
assert_equal 100, image.width
assert_equal 100, image.height
end
test "resized variation of PSD blob" do
blob = create_file_blob(filename: "icon.psd", content_type: "image/vnd.adobe.photoshop")
variant = blob.variant(resize: "20x20").processed
assert_match(/icon\.png/, variant.service_url)
image = read_image(variant)
assert_equal "PNG", image.type
assert_equal 20, image.width
assert_equal 20, image.height
end
test "optimized variation of GIF blob" do
blob = create_file_blob(filename: "image.gif", content_type: "image/gif")
assert_nothing_raised do
blob.variant(layers: "Optimize").processed
end
end
test "variation of invariable blob" do
assert_raises ActiveStorage::Blob::InvariableError do
create_file_blob(filename: "report.pdf", content_type: "application/pdf").variant(resize: "100x100")
end
end
test "service_url doesn't grow in length despite long variant options" do
blob = create_file_blob(filename: "racecar.jpg")
variant = blob.variant(font: "a" * 10_000).processed
assert_operator variant.service_url.length, :<, 500
end
end
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