updated tests and actions

[JSteve0]

• Added tests to get 100% code coverage in the model
• Added new actions that show code coverage on a commit

185

[github-actions[bot]]

Coverage report

St.:grey_question:	Category	Percentage	Covered / Total
🔴	Statements	35.93% (+5.68% 🔼)	129/359
🔴	Branches	40.63% (+16.43% 🔼)	52/128
🔴	Functions	30.77% (+1.92% 🔼)	16/52
🔴	Lines	36.71% (+5.89% 🔼)	127/346

Test suite run success

19 tests passing in 4 suites.

Report generated by 🧪jest coverage report action from 1b31dde5ac8025219396b0ae781c0486085e78c8