[Buildroot] [git commit branch/2023.05.x] support/testing: python-magic-wormhole: fix random failures

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=7817b9c2a6b4c117895b53accdaca541fa4af06a
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2023.05.x

The magic-wormhole "receive" command can output "waiting" messages
when key receival or verification are longer than a predefined
timeout:
https://github.com/magic-wormhole/magic-wormhole/blob/0.13.0/src/wormhole/cli/cmd_receive.py#L135

The intent is to have an interactive user experience.

This behavior makes the runtime test unreliable as the test always
expect the sent message as the exact output. When the test execution
is slower, it sometimes get the "waiting" message instead of the
expected message.

Some test jobs are succeeding:
https://gitlab.com/buildroot.org/buildroot/-/jobs/4968059737
while some other are failing.

magic-wormhole can override those timers with environment variables.
See:
https://github.com/magic-wormhole/magic-wormhole/blob/0.13.0/src/wormhole/cli/cmd_receive.py#L26

This commit sets those environment variable to larger values
(100 seconds instread of 1 by default), to make sure the test will
always pass.

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/4962923235

Reported-by: Romain Naour <romain.naour at gmail.com>
Signed-off-by: Julien Olivain <ju.o at free.fr>
Reviewed-by: Romain Naour <romain.naour at gmail.com>
Tested-by: Romain Naour <romain.naour at gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
(cherry picked from commit d44a888c320bd5fc850bccf5a1e09facb9fdad0d)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 support/testing/tests/package/test_python_magic_wormhole.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/support/testing/tests/package/test_python_magic_wormhole.py b/support/testing/tests/package/test_python_magic_wormhole.py
index d6541a2480..d1a37acbc6 100644
--- a/support/testing/tests/package/test_python_magic_wormhole.py
+++ b/support/testing/tests/package/test_python_magic_wormhole.py
@@ -56,7 +56,9 @@ class TestPythonPy3MagicWormhole(TestPythonPackageBase):
         cmd += "sleep 25"
         self.assertRunOk(cmd, timeout=30)
 
-        cmd = wormhole_cmd + " receive {}".format(code)
+        wormhole_env = "_MAGIC_WORMHOLE_TEST_KEY_TIMER=100 "
+        wormhole_env += "_MAGIC_WORMHOLE_TEST_VERIFY_TIMER=100 "
+        cmd = wormhole_env + wormhole_cmd + " receive {}".format(code)
         output, exit_code = self.emulator.run(cmd, timeout=35)
         self.assertEqual(exit_code, 0)
         self.assertEqual(output[0], text)