activestorage/test/models/variant_test.rb


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# frozen_string_literal: true

require "test_helper"
require "database/setup"

class ActiveStorage::VariantTest < ActiveSupport::TestCase
  setup do
    @blob = create_file_blob filename: "racecar.jpg"
  end

  test "resized variation" do
    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" do
    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 "service_url doesn't grow in length despite long variant options" do
    variant = @blob.variant(font: "a" * 10_000).processed
    assert_operator variant.service_url.length, :<, 500
  end
end