spec/ruby/core/matchdata/post_match_spec.rb


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require_relative '../../spec_helper'
require_relative 'fixtures/classes'

describe "MatchData#post_match" do
  it "returns the string after the match equiv. special var $'" do
    /(.)(.)(\d+)(\d)/.match("THX1138: The Movie").post_match.should == ': The Movie'
    $'.should == ': The Movie'
  end

  ruby_version_is ''...'2.7' do
    it "keeps taint status from the source string" do
      str = "THX1138: The Movie"
      str.taint
      res = /(.)(.)(\d+)(\d)/.match(str).post_match
      res.tainted?.should be_true
      $'.tainted?.should be_true
    end

    it "keeps untrusted status from the source string" do
      str = "THX1138: The Movie"
      str.untrust
      res = /(.)(.)(\d+)(\d)/.match(str).post_match
      res.untrusted?.should be_true
      $'.untrusted?.should be_true
    end
  end

  it "sets the encoding to the encoding of the source String" do
    str = "abc".force_encoding Encoding::EUC_JP
    str.match(/b/).post_match.encoding.should equal(Encoding::EUC_JP)
  end

  it "sets an empty result to the encoding of the source String" do
    str = "abc".force_encoding Encoding::ISO_8859_1
    str.match(/c/).post_match.encoding.should equal(Encoding::ISO_8859_1)
  end

  ruby_version_is "3.0" do
    it "returns an instance of String when given a String subclass" do
      str = MatchDataSpecs::MyString.new("THX1138: The Movie")
      /(.)(.)(\d+)(\d)/.match(str).post_match.should be_an_instance_of(String)
    end
  end
end