Vendor Rack 1.0.1

Incorporate patch from Revision 496.

vendor/plugins/rack/test/spec_rack_cascade.rb

@@ -0,0 +1,50 @@
+require 'test/spec'
+
+require 'rack/cascade'
+require 'rack/mock'
+
+require 'rack/urlmap'
+require 'rack/file'
+
+context "Rack::Cascade" do
+  docroot = File.expand_path(File.dirname(__FILE__))
+  app1 = Rack::File.new(docroot)
+
+  app2 = Rack::URLMap.new("/crash" => lambda { |env| raise "boom" })
+
+  app3 = Rack::URLMap.new("/foo" => lambda { |env|
+                            [200, { "Content-Type" => "text/plain"}, [""]]})
+
+  specify "should dispatch onward on 404 by default" do
+    cascade = Rack::Cascade.new([app1, app2, app3])
+    Rack::MockRequest.new(cascade).get("/cgi/test").should.be.ok
+    Rack::MockRequest.new(cascade).get("/foo").should.be.ok
+    Rack::MockRequest.new(cascade).get("/toobad").should.be.not_found
+    Rack::MockRequest.new(cascade).get("/cgi/../bla").should.be.forbidden
+  end
+
+  specify "should dispatch onward on whatever is passed" do
+    cascade = Rack::Cascade.new([app1, app2, app3], [404, 403])
+    Rack::MockRequest.new(cascade).get("/cgi/../bla").should.be.not_found
+  end
+
+  specify "should fail if empty" do
+    lambda { Rack::MockRequest.new(Rack::Cascade.new([])).get("/") }.
+      should.raise(ArgumentError)
+  end
+
+  specify "should append new app" do
+    cascade = Rack::Cascade.new([], [404, 403])
+    lambda { Rack::MockRequest.new(cascade).get('/cgi/test') }.
+      should.raise(ArgumentError)
+    cascade << app2
+    Rack::MockRequest.new(cascade).get('/cgi/test').should.be.not_found
+    Rack::MockRequest.new(cascade).get('/cgi/../bla').should.be.not_found
+    cascade << app1
+    Rack::MockRequest.new(cascade).get('/cgi/test').should.be.ok
+    Rack::MockRequest.new(cascade).get('/cgi/../bla').should.be.forbidden
+    Rack::MockRequest.new(cascade).get('/foo').should.be.not_found
+    cascade << app3
+    Rack::MockRequest.new(cascade).get('/foo').should.be.ok
+  end
+end