ruby--ruby/spec/ruby/core/regexp/timeout_spec.rb

require_relative '../../spec_helper'

ruby_version_is "3.2" do
  describe "Regexp.timeout" do
    after :each do
      Regexp.timeout = nil
    end

    it "returns global timeout" do
      Regexp.timeout = 3
      Regexp.timeout.should == 3
    end

    it "raises Regexp::TimeoutError after global timeout elapsed" do
      Regexp.timeout = 0.001
      Regexp.timeout.should == 0.001

      -> {
        # A typical ReDoS case
        /^(a*)*$/ =~ "a" * 1000000 + "x"
      }.should raise_error(Regexp::TimeoutError, "regexp match timeout")
    end

    it "raises Regexp::TimeoutError after timeout keyword value elapsed" do
      Regexp.timeout = 3 # This should be ignored
      Regexp.timeout.should == 3

      re = Regexp.new("^a*b?a*$", timeout: 0.001)

      -> {
        re =~ "a" * 1000000 + "x"
      }.should raise_error(Regexp::TimeoutError, "regexp match timeout")
    end
  end
end