From 44e8ec584f1cdc3131601328a075f36a3c0a6752 Mon Sep 17 00:00:00 2001
From: He Yin Ling <heyinling@espressif.com>
Date: Tue, 18 Sep 2018 10:55:41 +0800
Subject: [PATCH] test: ut can't process test command:

check ut reset done condition is not correct. If bootup pattern already
exist in cache, we will return without waiting for DUT bootup.
---
 tools/unit-test-app/unit_test.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/unit-test-app/unit_test.py b/tools/unit-test-app/unit_test.py
index 1e2048144..2bac600a3 100755
--- a/tools/unit-test-app/unit_test.py
+++ b/tools/unit-test-app/unit_test.py
@@ -141,6 +141,8 @@ def replace_app_bin(dut, name, new_app_bin):
 
 
 def reset_dut(dut):
+    # We do flush before test, in case we already have bootup pattern in data cache
+    dut.write("", flush=True)
     dut.reset()
     # esptool ``run`` cmd takes quite long time.
     # before reset finish, serial port is closed. therefore DUT could already bootup before serial port opened.