Implement job retrieval

Gemfile.lock

@@ -4,6 +4,7 @@ PATH
     coursemology-evaluator (0.0.0)
       active_rest_client (~> 1.2)
       activesupport (~> 4.2.0)
+      faraday_middleware
 
 GEM
   remote: https://rubygems.org/
@@ -36,6 +37,8 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
+    faraday_middleware (0.10.0)
+      faraday (>= 0.7.4, < 0.10)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
     i18n (0.7.0)
@@ -79,6 +82,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.1)
+    vcr (3.0.0)
 
 PLATFORMS
   mswin64
@@ -91,6 +95,7 @@ DEPENDENCIES
   rake
   rspec
   simplecov
+  vcr
 
 BUNDLED WITH
    1.10.6

coursemology-evaluator.gemspec

@@ -24,7 +24,9 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'simplecov'
   spec.add_development_dependency 'coveralls'
   spec.add_development_dependency 'codeclimate-test-reporter'
+  spec.add_development_dependency 'vcr'
 
   spec.add_dependency 'activesupport', '~> 4.2.0'
   spec.add_dependency 'active_rest_client', '~> 1.2'
+  spec.add_dependency 'faraday_middleware'
 end

lib/coursemology/evaluator.rb

@@ -1,5 +1,6 @@
 require 'active_support/all'
 require 'active_rest_client'
+require 'faraday_middleware'
 require 'coursemology/evaluator/version'
 
 module Coursemology::Evaluator

lib/coursemology/evaluator/client.rb

@@ -3,6 +3,8 @@ def self.initialize(host, api_user_email, api_token)
     Coursemology::Evaluator::Models::Base.base_url = host
     Coursemology::Evaluator::Models::Base.api_user_email = api_user_email
     Coursemology::Evaluator::Models::Base.api_token = api_token
+
+    Coursemology::Evaluator::Models::Base.initialize
   end
 
   def initialize

lib/coursemology/evaluator/models/base.rb

@@ -2,6 +2,18 @@ class Coursemology::Evaluator::Models::Base < ActiveRestClient::Base
   class << self
     attr_accessor :api_user_email
     attr_accessor :api_token
+
+    def initialize
+      ActiveRestClient::Base.perform_caching = false
+      default_config = ActiveRestClient::Base.faraday_config
+      ActiveRestClient::Base.faraday_config do |faraday|
+        # +follow_redirects+ must be added before declaring the adapter. See faraday_middleware#32,
+        # last comment.
+        faraday.response :follow_redirects
+
+        default_config.call(faraday)
+      end
+    end
   end
 
   before_request :add_authentication

lib/coursemology/evaluator/models/programming_evaluation.rb

@@ -0,0 +1,28 @@
+class Coursemology::Evaluator::Models::ProgrammingEvaluation < Coursemology::Evaluator::Models::Base
+  extend ActiveSupport::Autoload
+  autoload :Package
+
+  get :find, 'courses/assessment/programming_evaluations/:id'
+  post :allocate, 'courses/assessment/programming_evaluations/allocate'
+
+  # Obtains the package.
+  #
+  # @return [Coursemology::Evaluator::Models::ProgrammingEvaluation::Package]
+  def package
+    body = plain_request('courses/assessment/programming_evaluations/:id/package', id: id)
+    Package.new(StringIO.new(body))
+  end
+
+  private
+
+  # Performs a plain request.
+  #
+  # @param [String] url The URL to request.
+  # @param [Hash] params The parameter to be part of the request.
+  # @return [String] The response body.
+  def plain_request(url, params = {})
+    request = ActiveRestClient::Request.new({ url: url, method: :get, options: { plain: true } },
+                                            self.class)
+    request.call(params)
+  end
+end

lib/coursemology/evaluator/models/programming_evaluation/package.rb

@@ -0,0 +1,7 @@
+class Coursemology::Evaluator::Models::ProgrammingEvaluation::Package
+  # Constructs a new Package.
+  #
+  # @param [IO] io The IO object containing the package data.
+  def initialize(io)
+  end
+end

spec/coursemology/evaluator/models/base_spec.rb

@@ -3,11 +3,11 @@
     subject { Coursemology::Evaluator::Models::Base }
 
     describe '.api_user_email' do
-      it { is_expected.to have_attributes(api_user_email: nil) }
+      it { is_expected.to have_attributes(api_user_email: anything) }
     end
 
     describe '.api_token' do
-      it { is_expected.to have_attributes(api_token: nil) }
+      it { is_expected.to have_attributes(api_token: anything) }
     end
   end
 

spec/coursemology/evaluator/models/programming_evaluation/package_spec.rb

@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+RSpec.describe Coursemology::Evaluator::Models::ProgrammingEvaluation::Package do
+  around(:each) do |example|
+    File.open(Pathname.new(__dir__).join('../../../..',
+                                         'fixtures/programming_question_template.zip')) do |file|
+      define_singleton_method(:file) { file }
+      example.call
+    end
+  end
+
+  let(:package) { Coursemology::Evaluator::Models::ProgrammingEvaluation::Package.new(file) }
+  describe '#initialize' do
+    it 'accepts an IO object' do
+      package
+    end
+  end
+end

spec/coursemology/evaluator/models/programming_evaluation_spec.rb

@@ -0,0 +1,34 @@
+require 'spec_helper'
+
+RSpec.describe Coursemology::Evaluator::Models::ProgrammingEvaluation do
+  describe '.allocate' do
+    let(:evaluation) { Coursemology::Evaluator::Models::ProgrammingEvaluation.allocate.first }
+    it 'obtains an unallocated evaluation' do
+      VCR.use_cassette 'programming_evaluation/allocate' do
+        expect(evaluation.id).not_to be_nil
+      end
+    end
+  end
+
+  describe '.find' do
+    let(:find_id) { 2 }
+    let(:evaluation) { Coursemology::Evaluator::Models::ProgrammingEvaluation.find(find_id) }
+
+    it 'obtains the requested evaluation' do
+      VCR.use_cassette 'programming_evaluation/find' do
+        expect(evaluation.id).to eq(find_id)
+      end
+    end
+  end
+
+  describe '#package' do
+    let(:evaluation) { Coursemology::Evaluator::Models::ProgrammingEvaluation.find(3) }
+
+    it 'obtains the requested package' do
+      VCR.use_cassette 'programming_evaluation/package' do
+        expect(evaluation.package).to \
+          be_a(Coursemology::Evaluator::Models::ProgrammingEvaluation::Package)
+      end
+    end
+  end
+end