[dts] [PATCH 4/6] framework/ssh: Add verify ability for command execution

[Michael Qiu <michael.qiu@intel.com>]

ssh command exection never try to verify the failure or success,

It should be very dangerous when execute command both in dut and
tester machine without check the status, maybe unexpected error
happens.

This patch add this ability to verify the status.

Signed-off-by: Michael Qiu <michael.qiu@intel.com>
---
 framework/ssh_connection.py |  4 ++--
 framework/ssh_pexpect.py    | 13 ++++++++++++-
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/framework/ssh_connection.py b/framework/ssh_connection.py
index 4306162..1ff79b9 100644
--- a/framework/ssh_connection.py
+++ b/framework/ssh_connection.py
@@ -49,9 +49,9 @@ class SSHConnection(object):
         self.logger.config_execution(self.name)
         self.session.init_log(logger, self.name)
 
-    def send_expect(self, cmds, expected, timeout=15):
+    def send_expect(self, cmds, expected, timeout=15, verify=False):
         self.logger.info(cmds)
-        out = self.session.send_expect(cmds, expected, timeout)
+        out = self.session.send_expect(cmds, expected, timeout, verify=False)
         self.logger.debug(out)
         return out
 
diff --git a/framework/ssh_pexpect.py b/framework/ssh_pexpect.py
index 9c353e7..2fad899 100644
--- a/framework/ssh_pexpect.py
+++ b/framework/ssh_pexpect.py
@@ -29,12 +29,23 @@ class SSHPexpect(object):
         self.logger.config_execution(name)
         self.logger.info("ssh %s@%s" % (self.username, self.host))
 
-    def send_expect(self, command, expected, timeout=15):
+    def send_expect_base(self, command, expected, timeout=15):
         self.session.PROMPT = expected
         self.__sendline(command)
         self.__prompt(command, timeout)
         return self.get_output_before()
 
+    def send_expect(self, command, expected, timeout=15, verify=False):
+        ret = self.send_expect_base(command, expected, timeout)
+        if verify:
+            ret_status = self.send_expect_base("echo $?", expected)
+            if not int(ret_status):
+                return ret
+            else:
+                return -1
+        else:
+            return ret
+
     def __prompt(self, command, timeout):
         if not self.session.prompt(timeout):
             raise TimeoutException(command, self.get_output_all())
-- 
1.9.3