require_relative '../../../spec_helper'

describe "Encoding::Converter#finish" do
  before :each do
    @ec = Encoding::Converter.new("utf-8", "iso-2022-jp")
  end

  it "returns a String" do
    @ec.convert('foo')
    @ec.finish.should be_an_instance_of(String)
  end

  it "returns an empty String if there is nothing more to convert" do
    @ec.convert("glark")
    @ec.finish.should == ""
  end

  it "returns the last part of the converted String if it hasn't already" do
     @ec.convert("\u{9999}").should == "\e$B9a".force_encoding('iso-2022-jp')
     @ec.finish.should == "\e(B".force_encoding('iso-2022-jp')
  end

  it "returns a String in the destination encoding" do
    @ec.convert("glark")
    @ec.finish.encoding.should == Encoding::ISO2022_JP
  end

  it "returns an empty String if self was not given anything to convert" do
    @ec.finish.should == ""
  end

  it "returns an empty String on subsequent invocations" do
    @ec.finish.should == ""
    @ec.finish.should == ""
  end
end