Merge branch 'lint-headerhash' of git://bogomips.org/rack

* 'lint-headerhash' of git://bogomips.org/rack:
  lint: avoid TypeError on non-Hash-like response headers

lib/rack/lint.rb

@@ -500,6 +500,11 @@ def check_hijack(env)
     ## It is also possible to hijack a response after the status and headers
     ## have been sent.
     def check_hijack_response(headers, env)
+
+      # this check uses headers like a hash, but the spec only requires
+      # headers respond to #each
+      headers = Rack::Utils::HeaderHash.new(headers)
+
       ## In order to do this, an application may set the special header
       ## <tt>rack.hijack</tt> to an object that responds to <tt>call</tt>
       ## accepting an argument that conforms to the <tt>rack.hijack_io</tt>

test/spec_lint.rb

@@ -231,6 +231,13 @@ def result.name
                        [200, {"Foo-Bar" => "one\ntwo\nthree", "Content-Length" => "0", "Content-Type" => "text/plain" }, []]
                      }).call(env({}))
     }.should.not.raise(Rack::Lint::LintError)
+
+    # non-Hash header responses should be allowed
+    lambda {
+      Rack::Lint.new(lambda { |env|
+                       [200, [%w(Content-Type text/plain), %w(Content-Length 0)], []]
+                     }).call(env({}))
+    }.should.not.raise(TypeError)
   end
 
   should "notice content-type errors" do