Eduardo Ramos duderamos

Rules for good testing

Look at the following image...

...it shows an object being tested.

You can't see inside the object. All you can do is send it messages. This is an important point to make because we should be "testing the interface, and NOT the implementation" - doing so will allow us to change the implementation without causing our tests to break.

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

Using git-submodules to version-control Vim plugins

If you work across many computers (and even otherwise!), it's a good idea to keep a copy of your setup on the cloud, preferably in a git repository, and clone it on another machine when you need. Thus, you should keep the .vim directory along with your .vimrc version-controlled.

But when you have plugins installed inside .vim/bundle (if you use pathogen), or inside .vim/pack (if you use Vim 8's packages), keeping a copy where you want to be able to update the plugins (individual git repositories), as well as your vim-configuration as a whole, requires you to use git submodules.

Creating the repository

Initialize a git repository inside your .vim directory, add everything (including the vimrc), commit and push to a GitHub/BitBucket/GitLab repository:

cd ~/.vim

Initially install your pry-rails to group development on your apps Gemfile

group :development do
  # ..
  gem 'pry-rails'
  # ..
end

	#
	# Name: nginx-tls.conf
	# Auth: Gavin Lloyd <[email protected]>
	# Desc: Nginx SSL/TLS configuration for "A+" Qualys SSL Labs rating
	#
	# Enables HTTP/2, PFS, HSTS and OCSP stapling. Configuration options not related
	# to SSL/TLS are not included here.
	#
	# Additional tips:
	#

	#!/bin/bash

	# puma - Generic Red Hat Startup script for Puma

	# chkconfig: 35 95 05
	# description: Generic Puma Startup Script
	# processname: puma
	# config: /etc/'filename'.conf
	# pidfile: /var/run/puma/'filename'.pid

	# iPhone 6 Reservation Availability in Australia
	# !! Please use responsibly. Personal use only !!
	# `ruby iphone6.rb` - list all available models in all stores
	# `ruby iphone6.rb R405` - list available models for a specific store, Rundle Place in this example.

	require 'open-uri'
	require 'json'

	MODEL_NAMES = {
	"MG4A2X/A" => "iPhone 6 Space Grey 128GB",

	#!/bin/sh

	# To reinstall this script in the same or another git repo run:
	# curl -sSL https://gist.githubusercontent.com/elliotthilaire/cef91754bb296d67e776/raw/pre-push > .git/hooks/pre-push; chmod +x .git/hooks/pre-push

	# check that pronto is installed
	hash pronto 2>/dev/null \|\| {
	echo >&2 "Pronto is not installed. Install with 'gem install pronto pronto-rubocop'";
	echo >&2 "Find other Pronto runners at https://github.com/mmozuras/pronto#runners";
	exit 0;

	# Assumes the database container is named 'db'

	DOCKER_DB_NAME="$(docker-compose ps -q db)"
	DB_HOSTNAME=db
	DB_USER=postgres
	LOCAL_DUMP_PATH="path/to/local.dump"

	docker-compose up -d db
	docker exec -i "${DOCKER_DB_NAME}" pg_restore -C --clean --no-acl --no-owner -U "${DB_USER}" -d "${DB_HOSTNAME}" < "${LOCAL_DUMP_PATH}"
	docker-compose stop db