ruby--ruby/spec/ruby/core/symbol/match_spec.rb

require_relative '../../spec_helper'

describe :symbol_match, shared: true do
  it "returns the index of the beginning of the match" do
    :abc.send(@method, /b/).should == 1
  end

  it "returns nil if there is no match" do
    :a.send(@method, /b/).should be_nil
  end

  it "sets the last match pseudo-variables" do
    :a.send(@method, /(.)/).should == 0
    $1.should == "a"
  end
end

describe "Symbol#=~" do
  it_behaves_like :symbol_match, :=~
end

ruby_version_is ""..."2.4" do
  describe "Symbol#match" do
    it_behaves_like :symbol_match, :match
  end
end

ruby_version_is "2.4" do
  describe "Symbol#match" do
    it "returns the MatchData" do
      result = :abc.match(/b/)
      result.should be_kind_of(MatchData)
      result[0].should == 'b'
    end

    it "returns nil if there is no match" do
      :a.match(/b/).should be_nil
    end

    it "sets the last match pseudo-variables" do
      :a.match(/(.)/)[0].should == 'a'
      $1.should == "a"
    end
  end
end

ruby_version_is "2.4" do
  describe "Symbol#match?" do
    before :each do
      # Resetting Regexp.last_match
      /DONTMATCH/.match ''
    end

    context "when matches the given regex" do
      it "returns true but does not set Regexp.last_match" do
        :string.match?(/string/i).should be_true
        Regexp.last_match.should be_nil
      end
    end

    it "returns false when does not match the given regex" do
      :string.match?(/STRING/).should be_false
    end

    it "takes matching position as the 2nd argument" do
      :string.match?(/str/i, 0).should be_true
      :string.match?(/str/i, 1).should be_false
    end
  end
end