add users API

lib/api.rb

-class Gitlab::API < Grape::API
+require 'api/entities'
+require 'api/helpers'
+
+module Gitlab
+  class API < Grape::API
+    format :json
+    helpers APIHelpers
+
+    resource :users do
+      before { authenticate! }
+
+      # GET /users
+      get do
+        @users = User.all
+        present @users, :with => Entities::User
+      end
+
+      # GET /users/:id
+      get ":id" do
+        @user = User.find(params[:id])
+        present @user, :with => Entities::User
+      end
+    end
+
+    # GET /user
+    get "/user" do
+      authenticate!
+      present @current_user, :with => Entities::User
+    end
+  end
 end

lib/api/entities.rb

+module Gitlab
+  module Entities
+    class User < Grape::Entity
+      expose :id, :email, :name, :bio, :skype, :linkedin, :twitter,
+             :dark_scheme, :theme_id, :blocked, :created_at
+    end
+  end
+end

lib/api/helpers.rb

+module Gitlab
+  module APIHelpers
+    def current_user
+      @current_user ||= User.find_by_authentication_token(params[:private_token])
+    end
+
+    def authenticate!
+      error!('401 Unauthorized', 401) unless current_user
+    end
+  end
+end

spec/api/users_spec.rb

+require 'spec_helper'
+
+describe Gitlab::API do
+  let(:user) { Factory :user }
+
+  describe "GET /users" do
+    it "should return authentication error" do
+      get "/api/users"
+      response.status.should == 401
+    end
+
+    describe "authenticated GET /users" do
+      it "should return an array of users" do
+        get "/api/users?private_token=#{user.private_token}"
+        response.status.should == 200
+        json = JSON.parse(response.body)
+        json.should be_an Array
+        json.first['email'].should == user.email
+      end
+    end
+  end
+
+  describe "GET /users/:id" do
+    it "should return a user by id" do
+      get "/api/users/#{user.id}?private_token=#{user.private_token}"
+      response.status.should == 200
+      JSON.parse(response.body)['email'].should == user.email
+    end
+  end
+
+  describe "GET /user" do
+    it "should return current user" do
+      get "/api/user?private_token=#{user.private_token}"
+      response.status.should == 200
+      JSON.parse(response.body)['email'].should == user.email
+    end
+  end
+end

spec/spec_helper.rb

@@ -58,4 +58,8 @@ RSpec.configure do |config|
   config.after do
     DatabaseCleaner.clean
   end
+
+  config.include RSpec::Rails::RequestExampleGroup, :type => :request, :example_group => {
+    :file_path => /spec\/api/
+  }
 end