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@wkj
Created August 8, 2011 19:04
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Build and install a gem for testing with Cucumber and Aruba
# Copyright 2011 Solano Labs All Rights Reserved
require 'aruba'
require 'aruba/api'
class CukeGem
@setup_done = false
class << self
include Aruba::Api
attr_reader :setup_done
def setup(gemspec, once=true)
gem_home = setup_env
if !@setup_done || !once then
@setup_done = true
mkgemdir(gem_home)
gem_install(gemspec)
end
end
def teardown
restore_env
end
def setup_env
tid = ENV['TDDIUM_TID'] || ''
gem_home = File.join(ENV['HOME'], 'tmp', 'aruba-gem')
gem_home = File.expand_path(gem_home)
set_env('GEM_HOME', gem_home)
set_env('GEM_PATH', gem_home)
set_env('BUNDLE_PATH', gem_home)
unset_bundler_env_vars
paths = (ENV['PATH'] || "").split(File::PATH_SEPARATOR)
paths.unshift(File.join(gem_home, 'bin'))
set_env('PATH', paths.uniq.join(File::PATH_SEPARATOR))
return gem_home
end
def mkgemdir(gem_home)
FileUtils::rm_rf(gem_home)
FileUtils::mkdir_p(gem_home)
output = `gem install bundler`
if $?.exitstatus != 0 then
raise "unable to install bundler into #{gem_home}: #{output}"
end
end
def gem_install(gemspec)
gem_file = nil
begin
pwd = Dir.pwd
gemspec_dir = File.dirname(gemspec)
Dir.chdir(gemspec_dir)
output = `gem build #{File.basename(gemspec)}`
Dir.chdir(pwd)
if $?.exitstatus != 0 then
raise "unable to build gem: #{output}"
end
if output =~ /File:\s+([A-Za-z0-9_.-]+[.]gem)/ then
gem_file = $1
output = `gem install #{File.join(gemspec_dir, gem_file)}`
if $?.exitstatus != 0 then
raise "unable to install gem: #{output}"
end
else
raise "garbled gem build output: #{output}"
end
ensure
if gem_file then
FileUtils.rm_f(File.join(gemspec_dir, gem_file))
end
end
end
end
end
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