Test signal exit code scenario.

Author: zygzagZ

test/support/acceptance_test.rb

@@ -740,6 +740,16 @@ class MyEngine < Rails::Engine
 
         assert_failure app.spring_test_command, stderr: "omg (RuntimeError)"
       end
+
+      test "passes exit code from exit and signal" do
+        artifacts = app.run("bin/rails runner 'Process.exit(7)'")
+        code = artifacts[:status].exitstatus || artifacts[:status].termsig
+        assert_equal 7, code, "Expected exit status to be 7, but was #{code}"
+
+        artifacts = app.run("bin/rails runner 'system(\"kill -7 \#{Process.pid}\")'")
+        code = artifacts[:status].exitstatus || artifacts[:status].termsig
+        assert_equal 7, code, "Expected exit status to be 7, but was #{code}"
+      end
     end
   end
 end