spec/ruby/core/symbol/capitalize_spec.rb


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

describe "Symbol#capitalize" do
  it "returns a Symbol" do
    :glark.capitalize.should be_an_instance_of(Symbol)
  end

  it "converts the first character to uppercase if it is ASCII" do
    :lower.capitalize.should == :Lower
  end

  it "leaves the first character alone if it is not an alphabetical character" do
    :"£1.20".capitalize.should == :"£1.20"
  end

  ruby_version_is ''...'2.4' do
    it "leaves the first character alone if it is not an alphabetical ASCII character" do
      "\u{00DE}c".to_sym.capitalize.should == :"Þc"
      "\u{00DF}C".to_sym.capitalize.should == :"ßc"
    end
  end

  ruby_version_is '2.4' do
    it "capitalizes the first character if it is Unicode" do
      :"äöü".capitalize.should == :"Äöü"
      :"aou".capitalize.should == :"Aou"
    end
  end

  it "converts subsequent uppercase ASCII characters to their lowercase equivalents" do
    :lOWER.capitalize.should == :Lower
  end

  it "leaves ASCII characters already in the correct case as they were" do
    :Title.capitalize.should == :Title
  end

  it "works with both upper- and lowercase ASCII characters in the same Symbol" do
    :mIxEd.capitalize.should == :Mixed
  end

  ruby_version_is ''...'2.4' do
    it "leaves uppercase Unicode characters as they were" do
      "a\u{00DE}c".to_sym.capitalize.should == :"AÞc"
    end
  end

  it "leaves lowercase Unicode characters (except in first position) as they were" do
    "a\u{00DF}C".to_sym.capitalize.should == :"Aßc"
  end

  it "leaves non-alphabetic ASCII characters as they were" do
    "Glark?!?".to_sym.capitalize.should == :"Glark?!?"
  end
end