Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/thread/shared/wakeup.rb

@@ -0,0 +1,61 @@
+describe :thread_wakeup, shared: true do
+  it "can interrupt Kernel#sleep" do
+    exit_loop = false
+    after_sleep1 = false
+    after_sleep2 = false
+
+    t = Thread.new do
+      while true
+        break if exit_loop == true
+        Thread.pass
+      end
+
+      sleep
+      after_sleep1 = true
+
+      sleep
+      after_sleep2 = true
+    end
+
+    10.times { t.send(@method); Thread.pass }
+    t.status.should_not == "sleep"
+
+    exit_loop = true
+
+    10.times { sleep 0.1 if t.status and t.status != "sleep" }
+    after_sleep1.should == false # t should be blocked on the first sleep
+    t.send(@method)
+
+    10.times { sleep 0.1 if after_sleep1 != true }
+    10.times { sleep 0.1 if t.status and t.status != "sleep" }
+    after_sleep2.should == false # t should be blocked on the second sleep
+    t.send(@method)
+
+    t.join
+  end
+
+  it "does not result in a deadlock" do
+    t = Thread.new do
+      100.times { Thread.stop }
+    end
+
+    while t.status
+      begin
+        t.send(@method)
+      rescue ThreadError
+        # The thread might die right after.
+        t.status.should == false
+      end
+      Thread.pass
+    end
+
+    t.status.should == false
+    t.join
+  end
+
+  it "raises a ThreadError when trying to wake up a dead thread" do
+    t = Thread.new { 1 }
+    t.join
+    lambda { t.send @method }.should raise_error(ThreadError)
+  end
+end