Update test coverage to 100%

[arkid15r]

Proposed change

A couple of changes in order to make the coverage 100% again.
I've fixed two cases by changing elif to else condition and also added non-observed holidays test for one more case. The snapshot generator generates no diff so I hope it should be fine.

Type of change

• New country/market holidays support (thank you!)
• Supported country/market holidays update (calendar discrepancy fix, localization)
• Existing code/documentation/test/process quality improvement (best practice, cleanup, refactoring, optimization)
• Dependency update (version deprecation/upgrade)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (a code change causing existing functionality to break)
• New feature (new python-holidays functionality in general)

Checklist

• I've followed the contributing guidelines
• I've added references to all holidays information sources used in this PR
• The code style looks good: make pre-commit command generates no changes
• All tests pass locally: make test, make tox (we strongly encourage adding tests to your code)

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.9% Duplication

[coveralls]

Pull Request Test Coverage Report for Build 6986751556

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 100.0%

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Totals
Change from base Build 6985976736:	0.02%
Covered Lines:	10286
Relevant Lines:	10286

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💛 - Coveralls

[KJhellico]

LGTM. And I'm working on refactoring these holidays as substituted. :)