# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)

with_feature :encoding_transition do
  describe "String#bytes" do
    before(:each) do
      @utf8 = "東京"
      @ascii = 'Tokyo'
      @utf8_ascii = @utf8 + @ascii
    end

    it "returns an Enumerator when no block is given" do
      @utf8.bytes.should be_kind_of(Enumerable)
    end

    it "yields each byte to a block if one is given, returning self" do
      bytes = []
      @utf8.bytes {|b| bytes << b}.should == @utf8
      bytes.should == @utf8.bytes.to_a
    end

    it "returns #bytesize bytes" do
      @utf8_ascii.bytes.to_a.size.should == @utf8_ascii.bytesize
    end

    it "returns bytes as Fixnums" do
      @ascii.bytes.to_a.each {|b| b.should be_an_instance_of(Fixnum)}
      @utf8_ascii.bytes { |b| b.should be_an_instance_of(Fixnum) }
    end

    it "agrees with #unpack('C*')" do
      @utf8_ascii.bytes.to_a.should == @utf8_ascii.unpack("C*")
    end

    it "yields/returns no bytes for the empty string" do
      ''.bytes.to_a.should == []
    end

  end
end

with_feature :encoding do
  describe "String#bytes" do
    before(:each) do
      @utf8 = "東京"
      @ascii = 'Tokyo'
      @utf8_ascii = @utf8 + @ascii
    end

    it "agrees with #getbyte" do
      @utf8_ascii.bytes.to_a.each_with_index do |byte,index|
        byte.should == @utf8_ascii.getbyte(index)
      end
    end

    it "is unaffected by #force_encoding" do
      @utf8.force_encoding('ASCII').bytes.to_a.should == @utf8.bytes.to_a
    end
  end
end
