From 7ce4b716bdb5bcfc8b30ffcd034ce7aded1f72b9 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 12 Mar 2023 18:50:39 +0900
Subject: Add test for linear performance

---
 test/ruby/test_regexp.rb | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index 37375c0e3a..ae2bf82bb8 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -1765,4 +1765,11 @@ class TestRegexp < Test::Unit::TestCase
     assert_raise(TypeError) {Regexp.linear_time?(nil)}
     assert_raise(TypeError) {Regexp.linear_time?(Regexp.allocate)}
   end
+
+  def test_linear_performance
+    pre = ->(n) {[Regexp.new("a?" * n + "a" * n), "a" * n]}
+    assert_linear_performance(factor: 29, first: 10, max: 1, pre: pre) do |re, s|
+      re =~ s
+    end
+  end
 end
-- 
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