2 files changed, 22 insertions, 2 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
diff --git a/spec/ruby/core/process/setrlimit_spec.rb b/spec/ruby/core/process/setrlimit_spec.rb
index 5d137ca6c1..b721cc5098 100644
--- a/spec/ruby/core/process/setrlimit_spec.rb
+++ b/spec/ruby/core/process/setrlimit_spec.rb
@@ -100,7 +100,7 @@ platform_is_not :windows do
           Process.setrlimit(:RTPRIO, *Process.getrlimit(Process::RLIMIT_RTPRIO)).should be_nil
         end
 
-        if defined?(Process::RLIMIT_RTTIME)
+        guard -> { defined?(Process::RLIMIT_RTTIME) } do
           it "coerces :RTTIME into RLIMIT_RTTIME" do
             Process.setrlimit(:RTTIME, *Process.getrlimit(Process::RLIMIT_RTTIME)).should be_nil
           end
@@ -182,7 +182,7 @@ platform_is_not :windows do
           Process.setrlimit("RTPRIO", *Process.getrlimit(Process::RLIMIT_RTPRIO)).should be_nil
         end
 
-        if defined?(Process::RLIMIT_RTTIME)
+        guard -> { defined?(Process::RLIMIT_RTTIME) } do
           it "coerces 'RTTIME' into RLIMIT_RTTIME" do
             Process.setrlimit("RTTIME", *Process.getrlimit(Process::RLIMIT_RTTIME)).should be_nil
           end