Only deactivate activated connections in wifi_nmcli_test.py (BugFix)

[Jefferyyen]

Description

This PR updates turn_down_nm_connections() to deactivate only Wi-Fi connections currently in the activated state. It re-queries NetworkManager connections and repeats until no activated Wi-Fi connection remains.

Resolved issues

When running Wireless networking tests with NetworkManager, turn_down_nm_connections() may attempt to deactivate saved Wi-Fi profiles that are not active. In that case, nmcli connection down <uuid> fails with:

• Error: '<uuid>' is not an active connection
• Error: no active connection provided
• returned non-zero exit status 10

This change deactivates only activated Wi-Fi connections and loops until none remain, preventing the above failure.

Ref: WTN-323 (oem bug)

Documentation

Tests

Environment:

• Ubuntu 24.04
• NetworkManager (nmcli)
• Checkbox 6.0.0.dev90

Steps:

1. Before running Checkbox, ensure the DUT has:

at least one Wi-Fi connection in "activated" state (connected to an AP), and
at least one saved Wi-Fi profile that is not active.

Verify with nmcli connection show. For example, SSID 4F-1VC2-A45 is active on wlp2s0f0, and SSID 4F-1VC2-A35 is not active:

jfy@jfy:~$ nmcli connection show
NAME         UUID                                  TYPE      DEVICE   
4F-1VC2-A45  47e857fd-f5cc-4a2b-ac71-c336cca8251b  wifi      wlp2s0f0 
lo           6a0de5a2-310d-433d-865f-0feaf4bc1bbe  loopback  lo       
4F-1VC2-A35  ba001808-66a7-4392-8f74-bc45d45f1649  wifi      --       
jfy@jfy:~$

2. Set up the environment using the Checkbox Ubuntu launcher.
3. Run: checkbox-cli <Ubuntu_launcher> (replace with your launcher name if different)
4. Select:
   Desktop Preload Certification Tests for 24.04
   → Wireless networking tests
   → wireless/wireless_connection_wpa_ax_nm_<interface> ( is auto-detected, e.g. wlp2s0f0)

Expected result:

• turn_down_nm_connections() only deactivates connections in activated state.
• It stops once no activated Wi-Fi connection remains.
• The test no longer fails with exit status 10 due to attempting to deactivate inactive profiles.

Failure example (before this change):

• nmcli c down <uuid>
• Error: '<uuid>' is not an active connection
• Error: no active connection provided
• returned non-zero exit status 10

failure reference:

======================================
Attempt 1/5 (function 'device_rescan')
======================================
## Calling a rescan
+ nmcli d wifi rescan

## List APs with ESSID: 4F-1VC2-A35
SSID: 4F-1VC2-A35 Chan: 44 Freq: 5220 MHz Signal: 60

## Cleaning up TEST_CON connection
+ nmcli -t -f TYPE,UUID,NAME,STATE connection
No TEST_CON connection found, nothing to delete
## Get NM activate connection name
+ nmcli -t -f TYPE,UUID,NAME,STATE connection
## Turn off NM all connections
+ nmcli -t -f TYPE,UUID,NAME,STATE connection
Turn down connection 4F-1VC2-A35
+ nmcli c down 6a3cc2d6-d581-458d-a291-3edd8240ce73
Error: '6a3cc2d6-d581-458d-a291-3edd8240ce73' is not an active connection.
Error: no active connection provided.
Attempt 4 failed:
Command '['nmcli', 'c', 'down', '6a3cc2d6-d581-458d-a291-3edd8240ce73']' returned non-zero exit status 10.

Waiting 28.99 seconds before retrying...

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.70%. Comparing base (7b1ebd5) to head (3264cdf).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2246   +/-   ##
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  Coverage   53.70%   53.70%           
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  Files         401      401           
  Lines       43144    43146    +2     
  Branches     7996     7997    +1     
=======================================
+ Hits        23170    23172    +2     
  Misses      19161    19161           
  Partials      813      813           

Flag	Coverage Δ
provider-base	30.91% <100.00%> (+<0.01%)	⬆️

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