require 'open3'

# ADD CWD TO PATH
cwd = File.expand_path '..', __FILE__
ENV['PATH'] = "#{cwd}:#{ENV['PATH']}"

# WRITE A BINARY THAT PRINTS OUT ZOMG
binary_name = File.join(cwd, "my-program")
File.write binary_name, "#!/bin/sh \n echo zomg"
File.chmod 0755, binary_name

# BACKTICKS FIND IT
puts "FROM SYSTEM:"
puts `my-program`

# OPEN3 FINDS IT IF I PASS ENV
puts "\nFROM OPEN3 WITH ENV:"
out, * = Open3.capture3(ENV, 'my-program')
puts out

# OPEN3 DOES NOT FIND IT IF I DO NOT PASS ENV
puts "\nFROM OPEN3 WITHOUT ENV:"
out, * = Open3.capture3('my-program')
puts out