require_relative '../../spec_helper' require_relative 'fixtures/classes' describe "IO#binmode" do before :each do @name = tmp("io_binmode.txt") end after :each do @io.close if @io and !@io.closed? rm_r @name end it "returns self" do @io = new_io(@name) @io.binmode.should equal(@io) end it "raises an IOError on closed stream" do -> { IOSpecs.closed_io.binmode }.should raise_error(IOError) end it "sets external encoding to binary" do @io = new_io(@name, "w:utf-8") @io.binmode @io.external_encoding.should == Encoding::BINARY end it "sets internal encoding to nil" do @io = new_io(@name, "w:utf-8:ISO-8859-1") @io.binmode @io.internal_encoding.should == nil end end describe "IO#binmode?" do before :each do @filename = tmp("IO_binmode_file") @file = File.open(@filename, "w") @duped = nil end after :each do @duped.close if @duped @file.close rm_r @filename end it "is true after a call to IO#binmode" do @file.binmode?.should be_false @file.binmode @file.binmode?.should be_true end it "propagates to dup'ed IO objects" do @file.binmode @duped = @file.dup @duped.binmode?.should == @file.binmode? end end