Fix an incorrect mock/implementation pair.

lib/vagrant/action/box/download.rb

@@ -34,7 +34,7 @@ module Vagrant
           @env["download.classes"].each do |klass|
             if klass.match?(@env["box"].uri)
               @env.logger.info "Downloading with #{klass}..."
-              @downloader = klass.new(@env["box"].uri)
+              @downloader = klass.new(@env)
             end
           end
 

test/vagrant/action/box/download_test.rb

@@ -50,7 +50,7 @@ class DownloadBoxActionTest < Test::Unit::TestCase
     context "instantiating downloader" do
       should "instantiate the proper class" do
         instance = mock("instance")
-        Vagrant::Downloaders::HTTP.expects(:new).with(@env["box"].uri).returns(instance)
+        Vagrant::Downloaders::HTTP.expects(:new).with(@env).returns(instance)
         instance.expects(:prepare).with(@env["box"].uri).once
         assert @instance.instantiate_downloader
       end