1 files changed, 14 insertions, 0 deletions

diff --git a/spec/ruby/core/process/waitpid_spec.rb b/spec/ruby/core/process/waitpid_spec.rb
new file mode 100644
index 0000000000..a02147b663
--- /dev/null
+++ b/spec/ruby/core/process/waitpid_spec.rb
@@ -0,0 +1,14 @@
+require_relative '../../spec_helper'
+
+describe "Process.waitpid" do
+  it "returns nil when the process has not yet completed and WNOHANG is specified" do
+    cmd = platform_is(:windows) ? "timeout" : "sleep"
+    pid = spawn("#{cmd} 5")
+    begin
+      Process.waitpid(pid, Process::WNOHANG).should == nil
+      Process.kill("KILL", pid)
+    ensure
+      Process.wait(pid)
+    end
+  end
+end