(Improvement) Add more tests to smart contracts

[garatortiz]

Before submitting a pull request, please provide the following information:

• What is it? (leave one option)

  • (Improvement) of existing functionality

• What was the root cause of the problem originally / what feature was missing? The coverage value for SmartContracts tests is still too low

• How does this pull request solve it (in broad terms)? Add test to PhysycalAddressClaim

• Does it close any open issues? Closes #15 Closes #118

• Quick checklist

  • [x] npm run lint shows no errors
  • [x] docs were updated where necessary OR they don't need to be updated
  • [x] tests were updated where necessary OR they don't need to be updated

• Additional information

[coveralls]

Pull Request Test Coverage Report for Build 391

• 0 of 0 (NaN%) changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 79.412%

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Totals
Change from base Build 389:	0.5%
Covered Lines:	950
Relevant Lines:	1175

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💛 - Coveralls