1 files changed, 18 insertions, 0 deletions
diff --git a/spec/rubyspec/library/thread/sizedqueue/num_waiting_spec.rb b/spec/rubyspec/library/thread/sizedqueue/num_waiting_spec.rb
new file mode 100644
index 0000000000..2ce53875cc
--- /dev/null
+++ b/spec/rubyspec/library/thread/sizedqueue/num_waiting_spec.rb
@@ -0,0 +1,18 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'thread'
+require File.expand_path('../../shared/queue/num_waiting', __FILE__)
+
+describe "Thread::SizedQueue#num_waiting" do
+  it_behaves_like :queue_num_waiting, :num_waiting, -> { SizedQueue.new(10) }
+
+  it "reports the number of threads waiting to push" do
+    q = SizedQueue.new(1)
+    q.push(1)
+    t = Thread.new { q.push(2) }
+    sleep 0.05 until t.stop?
+    q.num_waiting.should == 1
+
+    q.pop
+    t.join
+  end
+end