More unit tests

[RickyLB]

Signed-off-by: Ricky Saechao ricky@launchbadge.com Description:

Related issue(s):

• https://github.com/hashgraph/hedera-sdk-swift/issues/301
• https://github.com/hashgraph/hedera-sdk-swift/issues/302
• https://github.com/hashgraph/hedera-sdk-swift/issues/303
• https://github.com/hashgraph/hedera-sdk-swift/issues/307
• https://github.com/hashgraph/hedera-sdk-swift/issues/191

Fixes #

Notes for reviewer:

Checklist

• [ ] Documented (Code comments, README, etc.)
• [ ] Tested (unit, integration, etc.)

[sonarcloud[bot]]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
70 Security Hotspots
296 Code Smells

No Coverage information
7.3% Duplication

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