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[PULL 07/23] tests/acceptance: Ignore binary data sent on serial console

From: Cleber Rosa
Subject: [PULL 07/23] tests/acceptance: Ignore binary data sent on serial console
Date: Tue, 13 Jul 2021 17:19:07 -0400

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

If a guest sends binary data on the serial console, we get:

 File "tests/acceptance/avocado_qemu/__init__.py", line 92,
   in _console_interaction msg = console.readline().strip()
 File "/usr/lib64/python3.8/codecs.py", line 322,
   in decode (result, consumed) = self._buffer_decode(data, self.errors, final)
 UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 2: 
invalid start byte

Since we use the console with readline(), fix it the easiest
way possible: ignore binary data (all current tests compare
text string anyway).

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210515134555.307404-2-f4bug@amsat.org>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
 tests/acceptance/avocado_qemu/__init__.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tests/acceptance/avocado_qemu/__init__.py 
index 1f1728ab83..c3163af3b7 100644
--- a/tests/acceptance/avocado_qemu/__init__.py
+++ b/tests/acceptance/avocado_qemu/__init__.py
@@ -86,14 +86,17 @@ def _console_interaction(test, success_message, 
     assert not keep_sending or send_string
     if vm is None:
         vm = test.vm
-    console = vm.console_socket.makefile()
+    console = vm.console_socket.makefile(mode='rb', encoding='utf-8')
     console_logger = logging.getLogger('console')
     while True:
         if send_string:
             if not keep_sending:
                 send_string = None # send only once
-        msg = console.readline().strip()
+        try:
+            msg = console.readline().decode().strip()
+        except UnicodeDecodeError:
+            msg = None
         if not msg:

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