Make Rack::Lint::InputWrapper delegate size method to underlying IO object.rack-0.4

See http://snurl.com/3nesq: Lint was breaking file uploads in a Merb app.

Signed-off-by: Michael S. Klishin <michael@novemberain.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/lib/rack/lint.rb b/lib/rack/lint.rb
index 7bc433b8..79bd9c02 100644
--- a/lib/rack/lint.rb
+++ b/lib/rack/lint.rb
@@ -215,6 +215,10 @@ module Rack
         @input = input
       end
 
+      def size
+        @input.size
+      end
+
       ## * +gets+ must be called without arguments and return a string,
       ##   or +nil+ on EOF.
       def gets(*args)
diff --git a/test/spec_rack_lint.rb b/test/spec_rack_lint.rb
index dbb6687e..3d8c2edb 100644
--- a/test/spec_rack_lint.rb
+++ b/test/spec_rack_lint.rb
@@ -299,5 +299,17 @@ context "Rack::Lint" do
     }.should.raise(Rack::Lint::LintError).
       message.should.match(/close must not be called/)
   end
+end
 
+context "Rack::Lint::InputWrapper" do
+  specify "delegates :size to underlying IO object" do
+    class IOMock
+      def size
+        101
+      end
+    end
+
+    wrapper = Rack::Lint::InputWrapper.new(IOMock.new)
+    wrapper.size.should == 101
+  end
 end