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

describe "Symbol#casecmp with Symbol" do
  it "compares symbols without regard to case" do
    :abcdef.casecmp(:abcde).should == 1
    :aBcDeF.casecmp(:abcdef).should == 0
    :abcdef.casecmp(:abcdefg).should == -1
    :abcdef.casecmp(:ABCDEF).should == 0
  end

  # Broken in MRI 1.8.4
  it "doesn't consider non-ascii characters equal that aren't" do
    # -- Latin-1 --
    upper_a_tilde  = :"\xC3"
    upper_a_umlaut = :"\xC4"
    lower_a_tilde  = :"\xE3"
    lower_a_umlaut = :"\xE4"

    lower_a_tilde.casecmp(lower_a_umlaut).should_not == 0
    lower_a_umlaut.casecmp(lower_a_tilde).should_not == 0
    upper_a_tilde.casecmp(upper_a_umlaut).should_not == 0
    upper_a_umlaut.casecmp(upper_a_tilde).should_not == 0

    # -- UTF-8 --
    upper_a_tilde  = :"\xC3\x83"
    upper_a_umlaut = :"\xC3\x84"
    lower_a_tilde  = :"\xC3\xA3"
    lower_a_umlaut = :"\xC3\xA4"

    lower_a_tilde.casecmp(lower_a_umlaut).should_not == 0
    lower_a_umlaut.casecmp(lower_a_tilde).should_not == 0
    upper_a_tilde.casecmp(upper_a_umlaut).should_not == 0
    upper_a_umlaut.casecmp(upper_a_tilde).should_not == 0
  end

  it "doesn't do case mapping for non-ascii characters" do
    # -- Latin-1 --
    upper_a_tilde  = :"\xC3"
    upper_a_umlaut = :"\xC4"
    lower_a_tilde  = :"\xE3"
    lower_a_umlaut = :"\xE4"

    upper_a_tilde.casecmp(lower_a_tilde).should == -1
    upper_a_umlaut.casecmp(lower_a_umlaut).should == -1
    lower_a_tilde.casecmp(upper_a_tilde).should == 1
    lower_a_umlaut.casecmp(upper_a_umlaut).should == 1

    # -- UTF-8 --
    upper_a_tilde  = :"\xC3\x83"
    upper_a_umlaut = :"\xC3\x84"
    lower_a_tilde  = :"\xC3\xA3"
    lower_a_umlaut = :"\xC3\xA4"

    upper_a_tilde.casecmp(lower_a_tilde).should == -1
    upper_a_umlaut.casecmp(lower_a_umlaut).should == -1
    lower_a_tilde.casecmp(upper_a_tilde).should == 1
    lower_a_umlaut.casecmp(upper_a_umlaut).should == 1
  end
end

describe "Symbol#casecmp" do
  it "returns nil if other is a String" do
    :abc.casecmp("abc").should be_nil
  end

  it "returns nil if other is a Fixnum" do
    :abc.casecmp(1).should be_nil
  end

  it "returns nil if other is an object" do
    obj = mock("string <=>")
    :abc.casecmp(obj).should be_nil
  end
end
