1 files changed, 20 insertions, 0 deletions
diff --git a/spec/ruby/core/process/last_status_spec.rb b/spec/ruby/core/process/last_status_spec.rb
new file mode 100644
index 0000000000..d49674d8ec
--- /dev/null
+++ b/spec/ruby/core/process/last_status_spec.rb
@@ -0,0 +1,20 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+ruby_version_is '2.5' do
+  describe 'Process#last_status' do
+    it 'returns the status of the last executed child process in the current thread' do
+      pid = Process.wait Process.spawn("exit 0")
+      Process.last_status.pid.should == pid
+    end
+
+    it 'returns nil if no child process has been ever executed in the current thread' do
+      Thread.new do
+        Process.last_status.should == nil
+      end.join
+    end
+
+    it 'raises an ArgumentError if any arguments are provided' do
+      -> { Process.last_status(1) }.should raise_error(ArgumentError)
+    end
+  end
+end