[Downloader::Cache] Add specs for cached downloads

spec/unit/downloader/cache_spec.rb

@@ -7,6 +7,7 @@ module Pod
       @spec = fixture_spec('banana-lib/BananaLib.podspec')
       @spec.source = { :git => SpecHelper.fixture('banana-lib') }
       @request = Downloader::Request.new(:spec => @spec, :released => true)
+      @unreleased_request = Downloader::Request.new(:name => 'BananaLib', :params => @spec.source)
       @stub_download = lambda do |cache, &blk|
         cache.define_singleton_method(:download) do |name, target, params, head|
           FileUtils.mkdir_p target
@@ -15,6 +16,10 @@ module Pod
       end
     end
 
+    after do
+      @cache.root.rmtree
+    end
+
     it 'returns the root' do
       @cache.root.should.be.directory?
     end
@@ -31,7 +36,6 @@ module Pod
 
       describe 'when downloading an un-released pod' do
         before do
-          @request = Downloader::Request.new(:name => 'BananaLib', :params => @spec.source)
           @stub_download.call @cache do
             File.open('BananaLib.podspec.json', 'w') { |f| f << @spec.to_pretty_json }
             File.open('OrangeLib.podspec.json', 'w') { |f| f << @spec.to_pretty_json.sub(/"name": "BananaLib"/, '"name": "OrangeLib"') }
@@ -41,18 +45,45 @@ module Pod
 
         it 'downloads the source' do
           @cache.expects(:copy_and_clean).twice
-          response = @cache.download_pod(@request)
-          response.should == Downloader::Response.new(@cache.root + @request.slug, @spec, @spec.source)
+          response = @cache.download_pod(@unreleased_request)
+          response.should == Downloader::Response.new(@cache.root + @unreleased_request.slug, @spec, @spec.source)
         end
       end
     end
 
     describe 'when the download is cached' do
+      before do
+        [@request, @unreleased_request].each do |request|
+          path_for_spec = @cache.send(:path_for_spec, request)
+          path_for_spec.dirname.mkpath
+          path_for_spec.open('w') { |f| f << @spec.to_pretty_json }
 
-    end
+          path_for_pod = @cache.send(:path_for_pod, request)
+          path_for_pod.mkpath
+          Dir.chdir(path_for_pod) do
+            FileUtils.mkdir_p 'Classes'
+            File.open('Classes/a.m', 'w') { }
+          end
+        end
+      end
 
-    after do
-      @cache.root.rmtree
+      describe 'when downloading a released pod' do
+        it 'does not download the source' do
+          Downloader::Git.any_instance.expects(:download).never
+          @cache.expects(:uncached_pod).never
+          response = @cache.download_pod(@request)
+          response.should == Downloader::Response.new(@cache.root + @request.slug, @spec, @spec.source)
+        end
+      end
+
+      describe 'when downloading an unreleased pod' do
+        it 'does not download the source' do
+          Downloader::Git.any_instance.expects(:download).never
+          @cache.expects(:uncached_pod).never
+          response = @cache.download_pod(@unreleased_request)
+          response.should == Downloader::Response.new(@cache.root + @unreleased_request.slug, @spec, @spec.source)
+        end
+      end
     end
   end
 end