spec/ruby/core/string/bytesize_spec.rb


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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'

describe "#String#bytesize" do
  it "returns the length of self in bytes" do
    "hello".bytesize.should == 5
    " ".bytesize.should == 1
  end

  it "works with strings containing single UTF-8 characters" do
    "\u{6666}".bytesize.should == 3
  end

  it "works with pseudo-ASCII strings containing single UTF-8 characters" do
    "\u{6666}".force_encoding('ASCII').bytesize.should == 3
  end

  it "works with strings containing UTF-8 characters" do
    "c \u{6666}".force_encoding('UTF-8').bytesize.should == 5
    "c \u{6666}".bytesize.should == 5
  end

  it "works with pseudo-ASCII strings containing UTF-8 characters" do
    "c \u{6666}".force_encoding('ASCII').bytesize.should == 5
  end

  it "returns 0 for the empty string" do
    "".bytesize.should == 0
    "".force_encoding('ASCII').bytesize.should == 0
    "".force_encoding('UTF-8').bytesize.should == 0
  end
end