Feature: rake license:action_items

.gitignore

@@ -3,4 +3,5 @@ pkg/*
 .bundle
 Gemfile.lock
 .rvmrc
-.idea/*
+.idea/*
+tmp/

Rakefile

@@ -2,6 +2,8 @@ require 'bundler'
 Bundler::GemHelper.install_tasks
 
 require 'rspec/core/rake_task'
+require 'cucumber'
+require 'cucumber/rake/task'
 
 desc "Run all specs in spec/"
 RSpec::Core::RakeTask.new(:spec) do |t|
@@ -10,3 +12,10 @@ RSpec::Core::RakeTask.new(:spec) do |t|
   t.rspec_opts = %w[--color]
 end
 
+
+desc "Run all cukes in features/"
+Cucumber::Rake::Task.new(:features) do |t|
+  t.cucumber_opts = "features --format pretty"
+end
+
+task default: [:spec, :features]

features/rake_tasks/action_items.feature

@@ -0,0 +1,15 @@
+Feature: rake license:action_items
+  As a user
+  I want a rake task "license:action_items" that lists any dependencies with licenses that fall outside of my whitelist
+  So that I know the limitations of distributing my application
+
+  Background:
+    Given I have a rails application with license finder
+
+  Scenario: Application with non-free dependency
+    Given my rails app depends on a gem "gpl_licensed_gem" licensed with "GPL"
+    And my rails app depends on a gem "mit_licensed_gem" licensed with "MIT"
+    And I whitelist the "MIT" license
+    When I run "bundle exec rake license:action_items"
+    Then I should see "gpl_licensed_gem" in its output
+    And I should not see "mit_licensed_gem" in its output

features/step_definitions/steps.rb

@@ -0,0 +1,95 @@
+Given /^I have a rails application with license finder$/ do
+  @user = DSL::User.new
+  @user.create_rails_app
+end
+
+Given /^my rails app depends on a gem "(.*?)" licensed with "(.*?)"$/ do |gem_name, license|
+  @user.add_dependency_to_app gem_name, license
+end
+
+Given /^I whitelist the "(.*?)" license$/ do |license|
+  @user.configure_license_finder_whitelist [license]
+end
+
+When /^I run "(.*?)"$/ do |command|
+  @output = @user.execute_command command
+end
+
+Then /^I should see "(.*?)" in its output$/ do |gem_name|
+  @output.should include gem_name
+end
+
+Then /^I should not see "(.*?)" in its output$/ do |gem_name|
+  @output.should_not include gem_name
+end
+
+module DSL
+  class User
+    def create_rails_app
+      reset_sandbox!
+
+      `bundle exec rails new #{app_location} --skip-bundle`
+
+      Bundler.with_clean_env do
+        `pushd #{app_location} && echo \"gem 'license_finder', path: '../../'\" >> Gemfile`
+      end
+    end
+
+
+    def add_dependency_to_app(gem_name, license)
+      `mkdir #{sandbox_location}/#{gem_name}`
+
+      File.open("#{sandbox_location}/#{gem_name}/#{gem_name}.gemspec", 'w') do |file|
+        file.write <<-GEMSPEC
+          Gem::Specification.new do |s|
+            s.name = "#{gem_name}"
+            s.version = "0.0.0"
+            s.author = "Cucumber"
+            s.summary = "Gem for testing License Finder"
+            s.license = "#{license}"
+          end
+        GEMSPEC
+      end
+
+      Bundler.with_clean_env do
+        `pushd #{app_location} && echo \"gem '#{gem_name}', path: '../#{gem_name}'\" >> Gemfile && bundle`
+      end
+    end
+
+    def configure_license_finder_whitelist(whitelisted_licenses=[])
+      File.open("tmp/my_app/config/license_finder.yml", "w") do |f|
+        f.write <<-YML
+---
+whitelist:
+#{whitelisted_licenses.map {|l| "- #{l}"}.join("\n")}
+YML
+      end
+    end
+
+    def execute_command(command)
+      Bundler.with_clean_env do
+        @output = `cd #{app_location} && bundle exec #{command}`
+      end
+
+      @output
+    end
+
+    private
+    def app_name
+      "my_app"
+    end
+
+    def app_location
+      File.join(sandbox_location, app_name)
+    end
+
+    def sandbox_location
+      "tmp"
+    end
+
+    def reset_sandbox!
+      `rm -rf #{sandbox_location}`
+      `mkdir #{sandbox_location}`
+    end
+  end
+end

license_finder.gemspec

@@ -1,15 +1,15 @@
 Gem::Specification.new do |s|
   s.name        = "license_finder"
-  s.version     = File.read "VERSION"
-  s.platform    = Gem::Platform::RUBY
+  s.version     = "0.4.0"
   s.authors     = ["Jacob Maine", "Matthew Kane Parker", "Ian Lesperance", "David Edwards"]
   s.email       = ["brent@pivotalabs.com"]
   s.homepage    = "https://github.com/pivotal/LicenseFinder"
   s.summary     = "Know your dependencies - and the licenses they are binding your application to."
   s.description = "Find and display licenses of a project's gem dependencies, so that you know what your limitations are when distributing your application."
   s.license     = "MIT"
 
-  %w(rspec rr rake cucumber).each do |gem|
+  s.add_development_dependency "rails", ">=3"
+  %w(rspec rr rake cucumber rails).each do |gem|
     s.add_development_dependency gem
   end