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require File.expand_path('../../../../spec_helper', __FILE__)
require 'stringio'
require 'zlib'
describe "GzipReader#each_byte" do
before :each do
@data = '12345abcde'
@zip = [31, 139, 8, 0, 44, 220, 209, 71, 0, 3, 51, 52, 50, 54, 49, 77,
76, 74, 78, 73, 5, 0, 157, 5, 0, 36, 10, 0, 0, 0].pack('C*')
@io = StringIO.new @zip
ScratchPad.clear
end
it "calls the given block for each byte in the stream, passing the byte as an argument" do
gz = Zlib::GzipReader.new @io
ScratchPad.record []
gz.each_byte { |b| ScratchPad << b }
ScratchPad.recorded.should == [49, 50, 51, 52, 53, 97, 98, 99, 100, 101]
end
it "returns an enumerator, which yields each byte in the stream, when no block is passed" do
gz = Zlib::GzipReader.new @io
enum = gz.each_byte
ScratchPad.record []
while true
begin
ScratchPad << enum.next
rescue StopIteration
break
end
end
ScratchPad.recorded.should == [49, 50, 51, 52, 53, 97, 98, 99, 100, 101]
end
it "increments position before calling the block" do
gz = Zlib::GzipReader.new @io
i = 1
gz.each_byte do |ignore|
gz.pos.should == i
i += 1
end
end
end
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