Tests the requiring of gem code not as gems, but regular file system files.

require_test.rb

# Tests the requiring of gem code not as gems, but regular
# file system files.


# As an example, we can use this gem, change this to suit your system:
JSON_REQUIRE_SPEC='/Users/kbennett/.rvm/gems/ree-1.8.7-2010.02/gems/json-1.4.6/lib/json'

# Will change dir to the gem's directory before requiring it,
# and change dir back to original directory when done.
def require_expanded_gem(require_spec)
  dir = File.dirname(require_spec)
  Dir.chdir(dir) do
    puts "Contents of #{dir} are:\n\n#{Dir["#{dir}/*"].join("\n")}\n" # check the directory  
    require require_spec
  end
end

# Now we call require_expanded_gem instead of require:
require_expanded_gem JSON_REQUIRE_SPEC

# ...and do something with JSON to verify that it loaded ok:
p JSON.methods