https://github.com/sharkdp/vivid/pull/78

generate-files.rb

#!/usr/bin/env ruby

require "pathname"
require "yaml"

filetypes = File.open("config/filetypes.yml", "r") { |io| YAML.safe_load(io) }

# core types will be processed manually
filetypes.delete("core")

noop     = proc { |*| }
test_dir = Pathname.new("#{__dir__}/vivid-test-files").tap(&:mkdir)
generate = lambda do |o, path|
  case o
  when Hash
    o.each { |k, v| generate.call(v, path.join(k)) }
  when Array
    path.mkpath

    o.each do |file|
      file = "example#{file}" if file.start_with?(".")
      path.join(file).open("w", &noop)
    end
  else
    raise "wat?"
  end
end

generate.call(filetypes, test_dir)

core    = test_dir.join("core").tap(&:mkdir)
support = test_dir.join(".support").tap(&:mkdir)

core.join("regular_file").open("w", &noop)
core.join("directory").mkdir

symlink_target = support.join("symlink").tap { |it| it.open("w", &noop) }
core.join("symlink").make_symlink(symlink_target)

hardlink_target = support.join("hardlink").tap { |it| it.open("w", &noop) }
core.join("hardlink-1").make_link(hardlink_target)
core.join("hardlink-2").make_link(hardlink_target)

# covers both missing_symlink_target (MISSING) and broken_symlink (ORPHAN)
core.join("broken_symlink_target").make_symlink(support.join("broken_symlink_target"))

core.join("setuid").tap { |it| it.open("w", &noop) }.chmod(4644)
core.join("setgid").tap { |it| it.open("w", &noop) }.chmod(2644)
core.join("other_writable").tap { |it| it.open("w", &noop) }.chmod(666)
core.join("sticky_other_writable").tap { |it| it.open("w", &noop) }.chmod(1666)
core.join("sticky").tap { |it| it.open("w", &noop) }.chmod(1644)
core.join("executable_file").tap { |it| it.open("w", &noop) }.chmod(755)