Test coverage api package [accounts, blocks, events, node, transactions, transfers]

[paologalligit]

Description

Added more tests to reach 80% of test coverage on api packages:

• accounts
• blocks
• events
• node
• transactions
• transfers

Type of change

• [x] Test coverage

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] New and existing E2E tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have not added any vulnerable dependencies to my code

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 83.33333% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 59.16%. Comparing base (c9c4a51) to head (8af7c22). Report is 4 commits behind head on master.

:exclamation: Current head 8af7c22 differs from pull request most recent head d903f1f. Consider uploading reports for the commit d903f1f to get more accurate results

Files	Patch %	Lines
thor/bytes32.go	0.00%	2 Missing :warning:
chain/chain.go	75.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #681 +/- ## ========================================== + Coverage 57.27% 59.16% +1.88% ========================================== Files 156 156 Lines 17218 17218 ========================================== + Hits 9862 10187 +325 + Misses 6392 6076 -316 + Partials 964 955 -9 ```

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