Unittest + Documentation update

_testresults_/coverage.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" ?>
-<coverage branch-rate="0.9767" branches-covered="84" branches-valid="86" complexity="0" line-rate="1" lines-covered="217" lines-valid="217" timestamp="1610580929971" version="4.5.2">
+<coverage branch-rate="0.9767" branches-covered="84" branches-valid="86" complexity="0" line-rate="1" lines-covered="217" lines-valid="217" timestamp="1610582644396" version="4.5.2">
 	<!-- Generated by coverage.py: https://coverage.readthedocs.io -->
 	<!-- Based on https://raw.githubusercontent.com/cobertura/web/master/htdocs/xml/coverage-04.dtd -->
 	<sources/>