1 files changed, 26 insertions, 0 deletions
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 787adbf..0f2f311 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -262,3 +262,29 @@ def wait_for_death(pid)
    end
    raise "PID:#{pid} never died!"
  end
+
+# executes +cmd+ and chunks its STDOUT
+def chunked_spawn(stdout, *cmd)
+  fork {
+    crd, cwr = IO.pipe
+    crd.binmode
+    cwr.binmode
+    crd.sync = cwr.sync = true
+
+    pid = fork {
+      STDOUT.reopen(cwr)
+      crd.close
+      cwr.close
+      exec(*cmd)
+    }
+    cwr.close
+    begin
+      buf = crd.readpartial(16384)
+      stdout.write("#{'%x' % buf.size}\r\n#{buf}")
+    rescue EOFError
+      stdout.write("0\r\n")
+      pid, status = Process.waitpid(pid)
+      exit status.exitstatus
+    end while true
+  }
+end