Implement Gems::Client#dependencies

gems.gemspec

@@ -10,9 +10,10 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency 'webmock', '~> 1.6'
   gem.add_development_dependency 'yard', '~> 0.7'
   gem.add_runtime_dependency 'faraday', '~> 0.6.1'
-  gem.add_runtime_dependency 'faraday_middleware', '~> 0.6.3'
+  gem.add_runtime_dependency 'faraday_middleware', '~> 0.6.5'
   gem.add_runtime_dependency 'hashie', '~> 1.0.0'
   gem.add_runtime_dependency 'multi_json', '~> 1.0.3'
+  gem.add_runtime_dependency 'multi_xml', '~> 0.2.2'
 
   gem.authors       = ["Erik Michaels-Ober"]
   gem.email         = ['[email protected]']

lib/gems/client.rb

@@ -50,5 +50,15 @@ def versions(gem, options={})
     def downloads(gem, version, options={})
       get("/api/v1/versions/#{gem}-#{version}/downloads.json", options)
     end
+
+    # Returns an array of hashes for all versions of given gems
+    #
+    # @param gems [Array] A list of gem names
+    # @return [Array]
+    # @example
+    #   Gems.dependencies 'rails', 'thor'
+    def dependencies(*gems)
+      get("/api/v1/dependencies", {:gems => gems.join(',')}, :marshal)
+    end
   end
 end

lib/gems/connection.rb

@@ -4,9 +4,8 @@ module Gems
   module Connection
     private
 
-    def connection
+    def connection(format=:json)
       options = {
-        :headers => {'Accept' => 'application/json'},
         :ssl => {:verify => false},
         :url => 'https://rubygems.org',
       }
@@ -15,8 +14,10 @@ def connection
         connection.use Faraday::Request::UrlEncoded
         connection.use Faraday::Response::RaiseError
         connection.use Faraday::Response::Mashify
-        connection.use Faraday::Response::ParseJson
-        connection.adapter(Faraday.default_adapter)
+        connection.use Faraday::Response::ParseXml if :xml == format
+        connection.use Faraday::Response::ParseJson if :json == format
+        connection.use Faraday::Response::ParseMarshal if :marshal == format
+        connection.adapter Faraday.default_adapter
       end
     end
   end

lib/gems/request.rb

@@ -1,13 +1,13 @@
 module Gems
   module Request
-    def get(path, options={})
-      request(:get, path, options)
+    def get(path, options={}, format=:json)
+      request(:get, path, options, format)
     end
 
     private
 
-    def request(method, path, options)
-      response = connection.send(method) do |request|
+    def request(method, path, options, format)
+      response = connection(format).send(method) do |request|
         request.url(path, options)
       end
       response.body

spec/gems/client_spec.rb

@@ -41,7 +41,7 @@
     end
   end
 
-  describe "#dependencies" do
+  describe "#downloads" do
     before do
       stub_get("/api/v1/versions/coulda-0.6.3/downloads.json").to_return(:body => fixture("downloads.json"))
     end
@@ -52,4 +52,16 @@
       downloads["2011-11-01"].should == 0
     end
   end
+
+  describe "#dependencies" do
+    before do
+      stub_get("/api/v1/dependencies?gems=rails,thor").to_return(:body => fixture("dependencies.json"))
+    end
+
+    it "should return an array of hashes for all versions of given gems" do
+      dependencies = @client.dependencies 'rails', 'thor'
+      a_get("/api/v1/dependencies?gems=rails,thor").should have_been_made
+      dependencies.first.number.should == "3.0.9"
+    end
+  end
 end