unittests - added PERL syntax for editors

[HomeAutoUser]

• Please check if the PR fulfills these requirements
• [ ] Tests for the changes have been added / modified (needed for for bug fixes / features)
• [ ] commandref has been added / updated (needed for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

• [ ] Bugfix (please link issue)

• [ ] Feature enhancement

• [ ] Documentation update

• [ ] Unittest enhancement

• [x] other

• What is the current behavior? (You can also link to an open issue here, if this describes the current behavior)

  • some files have no #!/usr/bin/env perl line --> some editors do not recognize language

• What is the new behavior (if this is a feature change)?

  • editors recognize language --> simplified representation and thus a better overview

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

• Other information:

  • added #!/usr/bin/env perl on some testfiles --> nothing changed in individual tests

[codecov[bot]]

Codecov Report

Merging #1036 (56173b9) into master (48bd9cb) will increase coverage by 0.18%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1036      +/-   ##
==========================================
+ Coverage   60.58%   60.77%   +0.18%     
==========================================
  Files         114      116       +2     
  Lines        8969     8979      +10     
  Branches     1408     1408              
==========================================
+ Hits         5434     5457      +23     
+ Misses       2531     2518      -13     
  Partials     1004     1004              

Flag	Coverage Δ
fhem	51.51% <ø> (+0.23%)	:arrow_up:
modules	60.77% <ø> (+0.18%)	:arrow_up:
perl	91.66% <ø> (ø)
unittests	60.77% <ø> (+0.18%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
t/FHEM/00_SIGNALduino/00_limit_subs.t	100.00% <ø> (ø)
t/FHEM/00_SIGNALduino/00_load.t	100.00% <ø> (ø)
...FHEM/00_SIGNALduino/01_SIGNALduino_PatternExists.t	100.00% <ø> (ø)
.../FHEM/00_SIGNALduino/01_SIGNALduino_PrepareFlash.t	100.00% <ø> (ø)
t/FHEM/00_SIGNALduino/01_SIGNALduino_Set_sendMsg.t	100.00% <ø> (ø)
t/FHEM/00_SIGNALduino/01_SIGNALduino_Write.t	100.00% <ø> (ø)
t/FHEM/00_SIGNALduino/01_SIGNALduino_avrdude.t	100.00% <ø> (ø)
t/FHEM/00_SIGNALduino/01_SIGNALduino_logging.t	100.00% <ø> (ø)
...00_SIGNALduino/02_SIGNALduino_CheckCcregResponse.t	100.00% <ø> (ø)
.../FHEM/00_SIGNALduino/02_SIGNALduino_CheckCmdResp.t	100.00% <ø> (ø)
... and 77 more

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