(#5171) Made filebucket able to perform diffs

It is now possible to ask the filebucket to diff two files using a URL
of the form:

https://puppet/production/file_bucket_file/md5/{first file hash}?diff_with={second file hash}

The returned diff is a string, the output of the "diff" command.

Paired-with: Paul Berry <paul@puppetlabs.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/spec/unit/network/http/handler_spec.rb b/spec/unit/network/http/handler_spec.rb
index 76a9c5530..cdbce41f7 100755
--- a/spec/unit/network/http/handler_spec.rb
+++ b/spec/unit/network/http/handler_spec.rb
@@ -209,6 +209,12 @@ describe Puppet::Network::HTTP::Handler do
         @handler.do_find(@irequest, @request, @response)
       end
 
+      it "should pass the result through without rendering it if the result is a string" do
+        @model_class.stubs(:find).returns "foo"
+        @handler.expects(:set_response).with(@response, "foo")
+        @handler.do_find(@irequest, @request, @response)
+      end
+
       it "should use the default status when a model find call succeeds" do
         @handler.expects(:set_response).with { |response, body, status| status.nil? }
         @handler.do_find(@irequest, @request, @response)