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Edit File: spec_rack_rewindable_input.rb
require 'test/spec' require 'stringio' require 'rack/rewindable_input' shared_context "a rewindable IO object" do setup do @rio = Rack::RewindableInput.new(@io) end teardown do @rio.close end specify "should be able to handle to read()" do @rio.read.should.equal "hello world" end specify "should be able to handle to read(nil)" do @rio.read(nil).should.equal "hello world" end specify "should be able to handle to read(length)" do @rio.read(1).should.equal "h" end specify "should be able to handle to read(length, buffer)" do buffer = "" result = @rio.read(1, buffer) result.should.equal "h" result.object_id.should.equal buffer.object_id end specify "should be able to handle to read(nil, buffer)" do buffer = "" result = @rio.read(nil, buffer) result.should.equal "hello world" result.object_id.should.equal buffer.object_id end specify "should rewind to the beginning when #rewind is called" do @rio.read(1) @rio.rewind @rio.read.should.equal "hello world" end specify "should be able to handle gets" do @rio.gets.should == "hello world" end specify "should be able to handle each" do array = [] @rio.each do |data| array << data end array.should.equal(["hello world"]) end specify "should not buffer into a Tempfile if no data has been read yet" do @rio.instance_variable_get(:@rewindable_io).should.be.nil end specify "should buffer into a Tempfile when data has been consumed for the first time" do @rio.read(1) tempfile = @rio.instance_variable_get(:@rewindable_io) tempfile.should.not.be.nil @rio.read(1) tempfile2 = @rio.instance_variable_get(:@rewindable_io) tempfile2.should.equal tempfile end specify "should close the underlying tempfile upon calling #close" do @rio.read(1) tempfile = @rio.instance_variable_get(:@rewindable_io) @rio.close tempfile.should.be.closed end specify "should be possibel to call #close when no data has been buffered yet" do @rio.close end specify "should be possible to call #close multiple times" do @rio.close @rio.close end end context "Rack::RewindableInput" do context "given an IO object that is already rewindable" do setup do @io = StringIO.new("hello world") end it_should_behave_like "a rewindable IO object" end context "given an IO object that is not rewindable" do setup do @io = StringIO.new("hello world") @io.instance_eval do undef :rewind end end it_should_behave_like "a rewindable IO object" end context "given an IO object whose rewind method raises Errno::ESPIPE" do setup do @io = StringIO.new("hello world") def @io.rewind raise Errno::ESPIPE, "You can't rewind this!" end end it_should_behave_like "a rewindable IO object" end end