119 lines
2.8 KiB
Ruby
119 lines
2.8 KiB
Ruby
require 'stringio'
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require 'rack/rewindable_input'
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shared "a rewindable IO object" do
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before do
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@rio = Rack::RewindableInput.new(@io)
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end
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should "be able to handle to read()" do
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@rio.read.should.equal "hello world"
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end
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should "be able to handle to read(nil)" do
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@rio.read(nil).should.equal "hello world"
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end
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should "be able to handle to read(length)" do
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@rio.read(1).should.equal "h"
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end
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should "be able to handle to read(length, buffer)" do
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buffer = ""
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result = @rio.read(1, buffer)
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result.should.equal "h"
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result.object_id.should.equal buffer.object_id
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end
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should "be able to handle to read(nil, buffer)" do
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buffer = ""
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result = @rio.read(nil, buffer)
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result.should.equal "hello world"
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result.object_id.should.equal buffer.object_id
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end
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should "rewind to the beginning when #rewind is called" do
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@rio.read(1)
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@rio.rewind
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@rio.read.should.equal "hello world"
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end
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should "be able to handle gets" do
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@rio.gets.should == "hello world"
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end
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should "be able to handle each" do
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array = []
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@rio.each do |data|
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array << data
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end
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array.should.equal(["hello world"])
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end
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should "not buffer into a Tempfile if no data has been read yet" do
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@rio.instance_variable_get(:@rewindable_io).should.be.nil
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end
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should "buffer into a Tempfile when data has been consumed for the first time" do
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@rio.read(1)
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tempfile = @rio.instance_variable_get(:@rewindable_io)
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tempfile.should.not.be.nil
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@rio.read(1)
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tempfile2 = @rio.instance_variable_get(:@rewindable_io)
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tempfile2.path.should == tempfile.path
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end
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should "close the underlying tempfile upon calling #close" do
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@rio.read(1)
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tempfile = @rio.instance_variable_get(:@rewindable_io)
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@rio.close
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tempfile.should.be.closed
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end
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should "be possible to call #close when no data has been buffered yet" do
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lambda{ @rio.close }.should.not.raise
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end
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should "be possible to call #close multiple times" do
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lambda{
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@rio.close
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@rio.close
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}.should.not.raise
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end
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@rio.close
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@rio = nil
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end
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describe Rack::RewindableInput do
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describe "given an IO object that is already rewindable" do
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before do
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@io = StringIO.new("hello world")
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end
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behaves_like "a rewindable IO object"
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end
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describe "given an IO object that is not rewindable" do
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before do
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@io = StringIO.new("hello world")
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@io.instance_eval do
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undef :rewind
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end
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end
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behaves_like "a rewindable IO object"
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end
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describe "given an IO object whose rewind method raises Errno::ESPIPE" do
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before do
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@io = StringIO.new("hello world")
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def @io.rewind
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raise Errno::ESPIPE, "You can't rewind this!"
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end
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end
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behaves_like "a rewindable IO object"
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end
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end
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