From 2ebc27899b650848b373995cf614440aa12a6add Mon Sep 17 00:00:00 2001
From: Bo Chen <chen.bo@intel.com>
Date: Wed, 9 Feb 2022 16:57:26 -0800
Subject: [PATCH] test_infra: Allow to not print commandline when spawning
 guest

keep it as default to print out commandline when spawning guest in favor
of integration tests for debugging purpose, while allowing to disable
it when needed (e.g. for performance tests).

Signed-off-by: Bo Chen <chen.bo@intel.com>
---
 test_infra/src/lib.rs | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/test_infra/src/lib.rs b/test_infra/src/lib.rs
index d4441886b7..4d1f205088 100644
--- a/test_infra/src/lib.rs
+++ b/test_infra/src/lib.rs
@@ -1185,6 +1185,7 @@ pub struct GuestCommand<'a> {
     command: Command,
     guest: &'a Guest,
     capture_output: bool,
+    print_cmd: bool,
 }
 
 impl<'a> GuestCommand<'a> {
@@ -1197,6 +1198,7 @@ impl<'a> GuestCommand<'a> {
             command: Command::new(clh_command(binary_name)),
             guest,
             capture_output: false,
+            print_cmd: true,
         }
     }
 
@@ -1205,13 +1207,20 @@ impl<'a> GuestCommand<'a> {
         self
     }
 
+    pub fn set_print_cmd(&mut self, print_cmd: bool) -> &mut Self {
+        self.print_cmd = print_cmd;
+        self
+    }
+
     pub fn spawn(&mut self) -> io::Result<Child> {
-        println!(
-            "\n\n==== Start cloud-hypervisor command-line ====\n\n\
-                 {:?}\n\
-                 \n==== End cloud-hypervisor command-line ====\n\n",
-            self.command
-        );
+        if self.print_cmd {
+            println!(
+                "\n\n==== Start cloud-hypervisor command-line ====\n\n\
+                     {:?}\n\
+                     \n==== End cloud-hypervisor command-line ====\n\n",
+                self.command
+            );
+        }
 
         if self.capture_output {
             let child = self