Adding fot test file

[codecov[bot]]

Codecov Report

Merging #896 (cf7b66d) into master (a20ad99) will decrease coverage by 0.45%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #896      +/-   ##
==========================================
- Coverage   82.04%   81.58%   -0.46%     
==========================================
  Files          44       44              
  Lines        5479     5479              
==========================================
- Hits         4495     4470      -25     
- Misses        984     1009      +25     

Flag	Coverage Δ
ata	62.66% <ø> (ø)
aux	67.67% <ø> (-0.55%)	:arrow_down:
base	66.13% <ø> (-0.02%)	:arrow_down:
dhcp	67.43% <ø> (-0.02%)	:arrow_down:
many	67.30% <ø> (-0.25%)	:arrow_down:
mud	72.28% <ø> (-0.17%)	:arrow_down:
switch	67.39% <ø> (-0.02%)	:arrow_down:
topo	66.43% <ø> (-0.02%)	:arrow_down:
unit	31.00% <ø> (ø)

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Impacted Files	Coverage Δ
daq/varz_state_collector.py	46.98% <0.00%> (-3.62%)	:arrow_down:
daq/traffic_analyzer.py	86.50% <0.00%> (-3.18%)	:arrow_down:
daq/runner.py	83.16% <0.00%> (-1.47%)	:arrow_down:
daq/acl_state_collector.py	82.19% <0.00%> (-1.37%)	:arrow_down:
daq/host.py	90.55% <0.00%> (-0.59%)	:arrow_down:

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