require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)

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

  ruby_bug "#2046", "1.8.7.174" do
    it "raises an IOError on closed stream" do
      lambda { IOSpecs.closed_io.binmode }.should raise_error(IOError)
    end
  end

  ruby_version_is "1.9" do
    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
end

ruby_version_is "1.9" do
  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
end
