Example Commander CLI Executable spec test

commander_example

#!/usr/bin/env ruby

require 'rubygems'
require 'commander/import'

program :version, "0.0.1"

command :main do |c|
  c.action do |args, options|
    say "This is some output"
  end
end 

commander_example_spec.rb

require "spec_helper"

# Load Commander Executable
load File.expand_path("../../../bin/example", __FILE__)

# Mock terminal to silence/manipulate stdin/stdout
def mock_terminal
  @input = StringIO.new
  @output = StringIO.new
  $terminal = HighLine.new @input, @output
end

describe "Commander Example" do
  before :each do
    mock_terminal
  end 

  describe "the main command", :vcr do
    before :each do
      @command = command :main
    end 

    it "should return some output" do 
      @command.run
      @output.should == "This is some output."
    end 
  end
end