Testing of https://github.com/jm/toml using toml-test (https://github.com/BurntSushi/toml-test)

Gemfile

source "https://rubygems.org"

gem "toml", :git => "git://github.com/jm/toml", :ref => "479353753fc71173e9a8f778a9c3c20a0f92d189"
gem "json"

results.txt

$ toml-test ~/test/test.sh
Test: array-mixed-types-arrays-and-ints (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: array-mixed-types-ints-and-floats (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: array-mixed-types-strings-and-ints (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: duplicate-key-keygroup (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: duplicate-keygroups (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: duplicate-keys (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: overflow-int (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: overflow-neg-int (invalid)

Expected an error, but no error was reported.
-------------------------------------------------------------------------------
Test: array-empty (valid)

/home/caleb/test/toml.rb:27:in `transform_toml_value': Unhandled type: Parslet::Slice (RuntimeError)
	from /home/caleb/test/toml.rb:24:in `block in transform_toml_value'
	from /home/caleb/test/toml.rb:24:in `map'
	from /home/caleb/test/toml.rb:24:in `transform_toml_value'
	from /home/caleb/test/toml.rb:13:in `block in transform_toml'
	from /home/caleb/test/toml.rb:12:in `each'
	from /home/caleb/test/toml.rb:12:in `reduce'
	from /home/caleb/test/toml.rb:12:in `transform_toml'
	from /home/caleb/test/toml.rb:32:in `<main>'


33 passed, 9 failed

toml.rb

require "toml"
require "json"

raw = ARGF.read
begin
  decoded = TOML.load(raw)
rescue
  exit 1
end

def transform_toml(t)
  jsonified = t.reduce({}) do |j, (k, v)|
    j.merge k => transform_toml_value(v)
  end
end

def transform_toml_value(v)
  type, value = case v
  when String then ["string", v]
  when Fixnum, Bignum then ["integer", v.to_s]
  when Float then ["float", v.to_s]
  when DateTime then ["datetime", v.strftime("%Y-%m-%dT%H:%M:%SZ")]
  when TrueClass, FalseClass then ["bool", v.to_s]
  when Array then ["array", v.map { |e| transform_toml_value(e) }]
  when Hash
    return transform_toml(v)
  else raise "Unhandled type: #{v.class}"
  end
  { "type" => type, "value" => value }
end

puts transform_toml(decoded).to_json

toml_test.sh

#!/bin/sh

# I ran tests according to the directions at https://github.com/BurntSushi/toml-test:
# $ toml-test ~/test/toml_test.sh

BUNDLE_GEMFILE=~/test/Gemfile bundle exec ruby ~/test/toml.rb