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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "IO#readline" do
before :each do
@io = IOSpecs.io_fixture "lines.txt"
end
after :each do
@io.close unless @io.closed?
end
it "returns the next line on the stream" do
@io.readline.should == "Voici la ligne une.\n"
@io.readline.should == "Qui è la linea due.\n"
end
it "goes back to first position after a rewind" do
@io.readline.should == "Voici la ligne une.\n"
@io.rewind
@io.readline.should == "Voici la ligne une.\n"
end
it "returns characters after the position set by #seek" do
@io.seek(1)
@io.readline.should == "oici la ligne une.\n"
end
it "raises EOFError on end of stream" do
IOSpecs.lines.length.times { @io.readline }
lambda { @io.readline }.should raise_error(EOFError)
end
it "raises IOError on closed stream" do
lambda { IOSpecs.closed_io.readline }.should raise_error(IOError)
end
it "assigns the returned line to $_" do
IOSpecs.lines.each do |line|
@io.readline
$_.should == line
end
end
end
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