Handle DMARC report with empty spf or dkim XML nodes

[codecov[bot]]

Codecov Report

Merging #305 (41cf246) into master (c6a5b29) will decrease coverage by 0.08%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #305      +/-   ##
==========================================
- Coverage   47.08%   46.99%   -0.09%     
==========================================
  Files          30       30              
  Lines        1079     1081       +2     
==========================================
  Hits          508      508              
- Misses        571      573       +2     

Flag	Coverage Δ
unittests	46.99% <0.00%> (-0.09%)	:arrow_down:

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Impacted Files	Coverage Δ
afew/filters/DMARCReportInspectionFilter.py	24.28% <0.00%> (-0.72%)	:arrow_down:

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[GuillaumeSeren]

Hey @aidecoe , since this filter doesn't have a test yet how do you feel about adding one while working on this issue ?

[aidecoe]

Adding another one would be trivial for this case, but to start, it's quite an effort. I needed the quick fix to unblock processing of my mail and so I shared it here. If you don't mind keeping it open for a while, I'll add tests when I get a chance.

[GuillaumeSeren]

@aidecoe Yes I know it is an effort but if it can be done it would be so much better.