ex-mktest

#!/bin/bash
# Usage: ex-mktest [path/to/file.ex]
#
# Generates a test file for an elixir source code file, like:
#
#   ex-mktest lib/my_app/users/register_user.ex 
#   # => test/my_app/users/register_user_test.exs
source=$1

if [[ ! -f $source ]]; then
  >&2 echo "$source isn't a file"
  exit 1
fi

test=$(echo $source | sed s/^lib/test/ | sed s/\.ex$/_test\.exs/)
directory=$(dirname $test)

if [[ -f $test ]]; then
  >&2 echo "$test already exists"
  exit 1
fi

mkdir -p $directory
touch $test

echo $test