How do you open StringIO in Ruby? - ruby

I have a Sinatra application with the following main.rb:
require 'bundler'
Bundler.require
get '/' do
##p = Pry.new
haml :index
end
post '/' do
code = params[:code]
$stdout = StringIO.new
##p.eval(code)
output = $stdout.string
$stdout = STDOUT
output_arr = []
output.each_line('\n') { |line| output_arr << line }
output_arr[1]
binding.pry
end
When I hit the binding.pry at the bottom to see if output contains any output, it seems like the IO stream is not closed, as I can't get anything to show up in the console.
However if I try to call open on StringIO.new, I receive an NoMethodError - private method 'open' called.
I am requiring 'stringio' in a config.ru file, and I've also tried requiring it in the main.rb file:
config.ru:
require 'stringio'
require './main'
run Sinatra::Application
I'm not sure if this is related but something interesting that I've noticed is that, in irb, if I require 'pry' before requiring stringio, then it returns false, otherwise it returns true.
This makes me wonder if Sinatra is including Pry from my Gemfile before loading the config.ru. Could that be the problem? Not sure how to solve this.

Related

Rspec for ssh connection

I am trying to write rspec to test ssh connection. In my spec file even though I have enetered incorrect server password it still says 0 examples, 0 failures. Can someone exmplain me why am I seeing that whereas I am expected to see at least one failure message.
Below is the piece of code of my ssh_host.rb and ssh_host_spec.rb files.
require "java"
require "highline/import"
require 'open-uri'
require 'socket'
require 'rubygems'
require 'net/ssh'
require 'stringio'
require 'net/scp'
require 'colorize'
module SshMod
class SshHost
attr_accessor :hostname, :username, :password
def initialize(host, user, password)
#hostname = host
#username = user
#password = password
#ssh = Net::SSH.start(#hostname, #username, :password => #password)
puts "\t Connection established for #{#hostname}...".blue
end
end
end
Rspec Class:
#!/usr/bin/env rspec
require 'spec_helper'
require 'ssh_host.rb'
describe SshMod::SshHost do
before :each do
#ssh = SshMod::SshHost.new "servername", "user", "wrong_password"
end
end
describe "#new" do
it "takes three parameters and returns sshhostobject" do
#ssh.should_be_an_instance_of SshHost
end
end
ssh_mock = double()
expect(SSH).to receive(:start).and_return(ssh_mock)
There are a number of things wrong with your spec file. your test for new should be within the context of your SshMod::SshHost describe otherwise it doesn't have access to the ssh instance variable. Also, your code should throw some errors because except isn't defined in Kernel it's within the context of an Rspec object. You most likely want to put it in your before.
Regarding your requires in your ruby class, I'd get rid of everything that you don't need (for example, why the explicit inclusion of socket when using net-ssh?).
I believe however, that you're running into the issue where no tests are running most likely due to your project structure (but that's only a guess since you haven't listed it). Rspec by default looks for spec files listed under spec/**/*_spec.rb which you can override with the --pattern flag. See rspec --help for more info.
Here's a working example of your code with a bunch of things cleaned up. I put the source of your code in lib assuming you're making something like a gem.
Gemfile:
source "https://rubygems.org"
gem "colorize"
gem "rspec"
gem "net-ssh"
lib/ssh_host.rb
require 'net/ssh'
require 'colorize'
module SshMod
class SshHost
attr_accessor :hostname, :username, :password
def initialize(host, user, password)
#hostname = host
#username = user
#password = password
#ssh = Net::SSH.start(#hostname, #username, password: #password)
puts "\t Connection established for #{#hostname}...".blue
end
end
end
spec/spec_helper.rb
$:.unshift File.join(File.dirname(__FILE__), '..', 'lib')
require 'rspec'
RSpec.configure do |config|
config.mock_with :rspec do |mocks|
mocks.verify_partial_doubles = true
end
end
spec/ssh_host_spec.rb
require 'spec_helper'
require 'ssh_host'
describe SshMod::SshHost do
let (:ssh) { SshMod::SshHost.new "servername", "user", "wrong_password" }
before :each do
allow(Net::SSH).to receive(:start).and_return(double("connection"))
end
describe "#new" do
it "takes three parameters and returns sshhostobject" do
expect(ssh).to be_a SshMod::SshHost
end
end
end

uninitialized constant BikeShare (NameError)

I'm trying to implement some simple testing in rspec for a gem I'm writing. When I comment out describe BikeShare do down to end and run the file, the file loads in and runs successfully. I'm sure it's something tiny I'm missing.
My test file is really simple and looks like this:
require 'spec_helper'
describe BikeShare do
it "should run" do
# response = BikeShare.new
# response.should_be present
end
end
When run, I get the error uninitialized constant BikeShare (NameError) at line 3.
My bikeshare.rb file looks like this, fairly simple:
class BikeShare
def initialize
response = JSON.parse(open("http://bayareabikeshare.com/stations/json").read)
#response = response["stationBeanList"]
end
def get_last_station
#response.last["id"]
end
end
My Rakefile looks like this:
require 'rubygems'
require 'bundler'
Bundler.setup
Bundler::GemHelper.install_tasks
require 'rspec/core/rake_task'
RSpec::Core::RakeTask.new do |spec|
# spec.libs << 'lib' << 'spec'
spec.pattern = 'spec/*_spec.rb'
end
task :default => :spec
Your tests arent aware of BikeShare.
You need to require the file that defines your BikeShare class. I dont use rspec but I think that you normally set up your testing environment in spec_helper.rb.

Sinatra + Rspec2 - Use Sessions/Helpers?

I am trying to test my Sinatra app using Rspec2 but I can't get access to sessions or helper methods in my tests.
spec_helper:
require File.dirname(__FILE__) + "/../myapp.rb"
require 'rubygems'
require 'sinatra'
require 'rack/test'
require 'rspec'
require 'factory_girl'
set :environment, :test
RSpec.configure do |conf|
conf.include Rack::Test::Methods
end
def app
Sinatra::Application
end
app_spec.rb:
require File.dirname(__FILE__) + "/../spec_helper.rb"
describe 'Something' do
it "should do something" do
session["aa"] = "Test"
end
end
This throws an error, can't find session variables. Similarly I can't use helper methods which are defined in my app.
I run my tests using rspec specs/app_spec/app_spec.rb.
What am I doing wrong?
Assuming you've got your specs and spec helper in the /spec dir, then this line should go at the top of your spec:
require_relative "./spec_helper.rb"
I also like to use File.expand_path and File.join as it's more reliable than doing it yourself, e.g.
require File.dirname(__FILE__) + "/../spec_helper.rb"
becomes
require_relative File.expand_path( File.join File.dirname(__FILE__), "/../spec_helper.rb" )
Also, I don't tend to require "sinatra", the app has that. If you're missing bits from sinatra then maybe, but I add things like this instead through rack:
ENV['RACK_ENV'] = 'test'
Finally, if your Sinatra app is using the modular style then you'll have to include it too. I do this at the top of a spec, for example:
describe "The site" do
include Rack::Test::Methods
include MyApp
let(:app) { MyApp.app }
YMMV. Let us know if any of this works.
A different test to try:
before(:all) { get "/" }
subject { last_response }
it { should be_ok }

Sinatra tests always 404'ing

I have a very simple Sinatra app which I'm having trouble testing.
Basically, every single request test returns a 404 when I know from testing in the browser that the request works fine. Any ideas as to what the problem might be?
test_helper.rb:
ENV["RACK_ENV"] = 'test'
$: << File.expand_path(File.dirname(__FILE__) + '/../lib')
require 'app'
Sinatra::Synchrony.patch_tests!
class Test::Unit::TestCase
include Rack::Test::Methods
end
app_test.rb
require 'test_helper'
class AppTest < Test::Unit::TestCase
def app
#app ||= Sinatra::Application
end
def test_it_says_hello
get "/"
assert_equal 200, last_response.status
end
end
app.rb
$: << 'config'
require "rubygems" require "bundler"
ENV["RACK_ENV"] ||= "development"
Bundler.require(:default, ENV["RACK_ENV"].to_sym)
require ENV["RACK_ENV"]
class App < Sinatra::Base register Sinatra::Synchrony
get '/' do
status 200
'hello, I\'m bat shit crazy and ready to rock'
end
end
Gemfile
source :rubygems
gem 'daemons'
gem 'sinatra'
gem 'sinatra-synchrony', :require => 'sinatra/synchrony'
gem 'resque'
gem 'thin'
group :test do
gem 'rack-test', :require => "rack/test"
gem 'test-unit', :require => "test/unit"
end
Why can I not get this normally very simple thing working?
I had quite the same problem with only HTTP-404 coming in return.
I solved it with giving another return in the "app" function.
class IndexClassTest < Test::Unit::TestCase
def app
#app = Foxydeal #appname NOT Sinatra::Application
end
...
Also
Sinatra::Synchrony.patch_tests!
seems to be obsolete.
Under your app_test.rb do this instead of what you have now:
def app
#app ||= App.new
end
This will work with your your class style like you had it in the beginning, no need to switch to the non-class/modular style.
It may seem logical, but are your routes configured correctly? If a route isn't correctly configured, it'll throw 404 errors left and right.
Figured it out.
app.rb
$: << 'config'
require "rubygems" require "bundler"
ENV["RACK_ENV"] ||= "development" Bundler.require(:default,
ENV["RACK_ENV"].to_sym) require ENV["RACK_ENV"]
class App < Sinatra::Base
register Sinatra::Synchrony
end
get '/' do
status 200
'hello, I\'m bat shit crazy and ready to rock'
end
You may simply do this:
class AppTest < Test::Unit::TestCase
def app
Sinatra::Application
end
You can get a solid understanding of sinatra tests by reading Learning From the Masters: Sinatra Internals and Rack::Test

Load error when trying to include custom module

Same app, different problem. I'm working on an app using the Dan Benjamin "Meet Sinatra" screencast as a reference. I'm trying to include a custom authentication module, which is housed in a lib folder (lib/authentication.rb). I am requiring that line at the top of my code, but when I try to load the page, it claims there is no such file to load.
Any thoughts?
Here's the top of my main Sinatra file:
require 'sinatra'
require 'rubygems'
require 'datamapper'
require 'dm-core'
require 'lib/authorization'
DataMapper::setup(:default, "sqlite3://#{Dir.pwd}/entries.db")
class Entry
include DataMapper::Resource
property :id, Serial
property :first_name, String
property :last_name, String
property :email, String
property :created_at, DateTime
end
# create, upgrade, or migrate tables automatically
DataMapper.auto_upgrade!
helpers do
include Sinatra::Authorization
end
And the actual Module:
module Sinatra
module Authorization
def auth
#auth ||= Rack::Auth::Basic::Request.new(request.env)
end
def unauthorized!(realm="Short URL Generator")
headers 'WWW-Authenticate' => %(Basic realm="#{realm}")
throw :halt, [ 401, 'Authorization Required' ]
end
def bad_request!
throw :halt, [ 400, 'Bad Request' ]
end
def authorized?
request.env['REMOTE_USER']
end
def authorize(username, password)
if (username=='topfunky' && password=='peepcode') then
true
else
false
end
end
def require_admin
return if authorized?
unauthorized! unless auth.provided?
bad_request! unless auth.basic?
unauthorized! unless authorize(*auth.credentials)
request.env['REMOTE_USER'] = auth.username
end
def admin?
authorized?
end
end
end
Then, on any of the handlers I want to protect, I put "require_admin."
Assuming you're using Ruby 1.9, the default $LOAD_PATH no longer includes the current directory. So while statements like require 'sinatra' work just fine (because those gems are in $LOAD_PATH), Ruby doesn't know that your lib/authorization file is located relative to your main Sinatra file.
You can add the Sinatra file's directory to the load path, and then your require statements should work fine:
$LOAD_PATH.unshift(File.dirname(__FILE__))
require 'sinatra'
require 'rubygems' # Not actually needed on Ruby 1.9
require 'datamapper'
require 'dm-core'
require 'lib/authorization'
Personnaly, I use a "relative" path since I work with Ruby 1.9.2 :
require 'sinatra'
require 'rubygems' # Not actually needed on Ruby 1.9
require 'datamapper'
require 'dm-core'
require './lib/authorization'
But I never check what would happen if my code should work on Ruby 1.8.6 again.

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