Thibaut Barrère thbar

Data engineer, full-stack Ruby/Rails/Elixir/Javascript dev, SaaS product builder. Author of http://kiba-etl.org

thbar / iban_test.rb

Last active November 23, 2017 21:09

Calling a Rust crate from Ruby minitest

	require_relative 'test_helper'

	require 'helix_runtime'
	require 'etl-test/native'

	class MyTest < Minitest::Test
	def test_valid
	assert_equal true, IbanChecker.check('TL380080012345678910157')
	end

thbar / plug_demo.exs

Last active October 18, 2017 16:30

Start a small Elixir server from a script, then query it from inside the same script

	#
	# to run and restart continuously when the code changes:
	#
	# find scripts lib mix.* \| entr -rc mix run --no-halt scripts/plug_demo.exs
	#

	defmodule MySimpleServerPlug do
	# https://hexdocs.pm/plug/Plug.Conn.html
	import Plug.Conn

thbar / spec.rb

Last active July 13, 2017 08:57

	def recurly_tax_info(request)
	# dump from https://api.recurly.com/js/v1/tax?vat_number=&country=FR&currency=USD&version=3.0.10&key=my_key&callback=__jp1
	country = request.uri.query_values['country']
	currency = request.uri.query_values['currency']
	vat_number = request.uri.query_values['vat_number']

	expect(country).to eq('FR')
	expect(currency).to eq('USD')
	expect(vat_number).to eq('')

thbar / .bash_profile

Created June 25, 2017 09:51

If you switch between outdoor and indoor terminal work

	function darkback {
	osascript -e "tell application \"Terminal\" to set background color of window 1 to {0,0,0}"
	}

	function lightback {
	osascript -e "tell application \"Terminal\" to set background color of window 1 to {65535,65535,65535}"
	}

thbar / gem_update.rb

Last active June 10, 2017 12:24

A lo-tech gem auto-updated script

	# Important: please make sure to still carefully read each gem changelog!

	require 'yaml'

	def system!(cmd)
	raise "Cannot run command!!!" unless system(cmd)
	end

	gems = YAML.load(IO.read('outdated.yml')).fetch('gems')
	gems.each do \|gem\|

thbar / --take-the-tour.png

Last active January 22, 2020 16:35

thbar / 005_add_vat_rates.rb

Last active December 17, 2019 10:01

Creating a foreign data wrapper with Postgres and Sequel

	# NOTE: several improvements to be made but I'm in a VAT preparation hurry
	# - use "up" and "down" to make the migration reversible
	# - use Sequel methods for extension/server create
	Sequel.migration do
	change do
	file = File.expand_path(File.join(File.dirname(__FILE__), '..', 'data', 'vat_rates.csv'))
	run 'CREATE EXTENSION file_fdw;'
	run 'CREATE SERVER file_fdw_server FOREIGN DATA WRAPPER file_fdw;'
	create_table(:vat_rates, foreign: 'file_fdw_server', options: {format: 'csv', header: 'true', filename: file, delimiter: ','}) do
	String :month, null: false

thbar / rvm_spec.rb

Created March 15, 2017 14:07

Using ServerSpec to verify per-user RVM setup

	def command_as(command, as:)
	command(%Q{su -c #{Shellwords.escape(command)} --login #{as}})
	end

	%w(my_user).each do \|user\|
	describe "RVM setup for user #{user}" do
	%w(ruby-2.4.0).each do \|ruby_version\|
	let(:subject) { command_as('rvm list strings', as: user) }
	it "has #{ruby_version} installed" do
	expect(subject.stdout.split("\n")).to include(ruby_version)

thbar / Gemfile

Created March 10, 2017 16:05

A way to log errors in red with Ruby's Logger & the colorize gem

thbar / class_method_instrumentation.rb

Created March 8, 2017 14:27

A cheap class method call tracing instrumentation (without using doubles)

	# Example of use to detect a class method call throughout a whole test suite
	# This could also be achieved with a RSpec double.
	class Dir
	old_method = method(:[])

	define_singleton_method(:[]) do \|*args\|
	# Use failure in a test-suite where you'd need to detect use
	fail "FIXME - Dir[] called with args #{args.inspect}"
	# Or call through using this, if you only need to trace
	# old_method.call(*args)