* 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

2 files changed, 26 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 20e502e480..8be2fa40bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jun 13 00:41:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* test/ruby/test_thread.rb: add a test.
+
 Thu Jun 12 23:30:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* thread.c (mutex_unlock): fix cond_notified consistency.
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