Improve test coverage

[nam-hle]

I added tests for the following files:

• drawRow
• padTableData
• stringifyTableData
• truncateTableData
• wrapCell

[coveralls]

Pull Request Test Coverage Report for Build 257

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+25.2%) to 98.176%

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Totals
Change from base Build 250:	25.2%
Covered Lines:	236
Relevant Lines:	236

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💛 - Coveralls

[gajus]

:tada: This PR is included in version 6.1.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: