Cocaine PATH issue

.ruby-version

2.0.0-p353

demo.rb

require 'bundler/setup'
require 'cocaine'
require 'posix-spawn'
require 'rspec'

Cocaine::CommandLine.path = File.dirname(__FILE__)

[
  Cocaine::CommandLine::BackticksRunner,
  Cocaine::CommandLine::PopenRunner,
  Cocaine::CommandLine::PosixRunner,
  Cocaine::CommandLine::ProcessRunner
].each do |runner_class|
  describe runner_class do
    describe '#run' do
      it 'finds executables from the supplemental environment path' do
        Cocaine::CommandLine.runner = runner_class.new
        result = Cocaine::CommandLine.new('ls').run

        expect(result.strip).to eq('overridden ls')
      end
    end
  end
end

Gemfile

source 'https://rubygems.org'

ruby '2.0.0'

gem 'cocaine'
gem 'posix-spawn'
gem 'rspec'

Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    activesupport (4.0.4)
      i18n (~> 0.6, >= 0.6.9)
      minitest (~> 4.2)
      multi_json (~> 1.3)
      thread_safe (~> 0.1)
      tzinfo (~> 0.3.37)
    atomic (1.1.16)
    climate_control (0.0.3)
      activesupport (>= 3.0)
    cocaine (0.5.3)
      climate_control (>= 0.0.3, < 1.0)
    diff-lcs (1.2.5)
    i18n (0.6.9)
    minitest (4.7.5)
    multi_json (1.9.2)
    posix-spawn (0.3.8)
    rspec (2.14.1)
      rspec-core (~> 2.14.0)
      rspec-expectations (~> 2.14.0)
      rspec-mocks (~> 2.14.0)
    rspec-core (2.14.8)
    rspec-expectations (2.14.5)
      diff-lcs (>= 1.1.3, < 2.0)
    rspec-mocks (2.14.6)
    thread_safe (0.3.1)
      atomic (>= 1.1.7, < 2)
    tzinfo (0.3.39)

PLATFORMS
  ruby

DEPENDENCIES
  cocaine
  posix-spawn
  rspec

ls

#!/bin/bash
printf "overridden ls\n"