From bbcd6dfc96c0273f4bf83e89286eed03ccd2b045 Mon Sep 17 00:00:00 2001
From: mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 12 Jun 2008 15:42:14 +0000
Subject: * test/ruby/test_thread.rb: add a test.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17114 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_thread.rb | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'test/ruby/test_thread.rb')

diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index e3a6724425..7f50f3aded 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -439,6 +439,28 @@ class TestThread < Test::Unit::TestCase
     end
   end
 
+  def test_mutex_fifo_like_lock
+    m1 = Mutex.new
+    m2 = Mutex.new
+    m1.lock
+    m2.lock
+    m1.unlock
+    m2.unlock
+    assert_equal(false, m1.locked?)
+    assert_equal(false, m2.locked?)
+
+    m3 = Mutex.new
+    m1.lock
+    m2.lock
+    m3.lock
+    m1.unlock
+    m2.unlock
+    m3.unlock
+    assert_equal(false, m1.locked?)
+    assert_equal(false, m2.locked?)
+    assert_equal(false, m3.locked?)
+  end
+
   def test_recursive_error
     o = Object.new
     def o.inspect
-- 
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