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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "IO#bytes" do
before :each do
@io = IOSpecs.io_fixture "lines.txt"
end
after :each do
@io.close unless @io.closed?
end
it "returns an enumerator of the next bytes from the stream" do
enum = @io.bytes
enum.should be_an_instance_of(Enumerator)
@io.readline.should == "Voici la ligne une.\n"
enum.first(5).should == [81, 117, 105, 32, 195]
end
it "yields each byte" do
count = 0
ScratchPad.record []
@io.each_byte do |byte|
ScratchPad << byte
break if 4 < count += 1
end
ScratchPad.recorded.should == [86, 111, 105, 99, 105]
end
it "raises an IOError on closed stream" do
enum = IOSpecs.closed_io.bytes
lambda { enum.first }.should raise_error(IOError)
end
it "raises an IOError on an enumerator for a stream that has been closed" do
enum = @io.bytes
enum.first.should == 86
@io.close
lambda { enum.first }.should raise_error(IOError)
end
end
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