Add some local tests

[Teester]

Adds local tests to CompareProperties(), CompareStatements() and Utilities() which do not rely on accessing wikidata

[codecov]

Codecov Report

Attention: Patch coverage is 96.03175% with 10 lines in your changes missing coverage. Please review.

Project coverage is 92.17%. Comparing base (5f754dc) to head (ed3f63c).
Report is 26 commits behind head on master.

Files with missing lines	Patch %	Lines
comparejsonld.py	79.41%	7 Missing ⚠️
tests/test_compare_properties.py	98.59%	1 Missing ⚠️
tests/test_compare_statements.py	98.18%	1 Missing ⚠️
tests/test_utilities.py	98.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #61      +/-   ##
==========================================
+ Coverage   90.22%   92.17%   +1.94%     
==========================================
  Files           6       11       +5     
  Lines         972     1418     +446     
==========================================
+ Hits          877     1307     +430     
- Misses         95      111      +16     

Files with missing lines	Coverage Δ
compareshape.py	93.46% <100.00%> (+20.83%)	⬆️
shape.py	94.37% <100.00%> (-2.17%)	⬇️
test_schemas.py	87.40% <100.00%> (-10.39%)	⬇️
tests/test_compare_v1_v2.py	88.42% <100.00%> (ø)
tests/test_v1.py	84.53% <100.00%> (ø)
tests/test_compare_properties.py	98.59% <98.59%> (ø)
tests/test_compare_statements.py	98.18% <98.18%> (ø)
tests/test_utilities.py	98.71% <98.71%> (ø)
comparejsonld.py	94.30% <79.41%> (-2.24%)	⬇️

... and 1 file with indirect coverage changes

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.0% Coverage on New Code
1.5% Duplication on New Code

See analysis details on SonarQube Cloud