Enhance testing coverage for Exact Numeric data types.

[Yvinayak07]

Description

Working on enhancement of test coverage for exact numeric datatypes:

1. tinyint,
2. smallint,
3. int,
4. bigint.

Test Plan: https://quip-amazon.com/aL2xAKs3EHtl/Test-Plan-for-Exact-Numeric-DataTypes

Issues Resolved

BABEL-5621

Test Scenarios Covered

• Use case based - YES

• Boundary conditions - YES

• Arbitrary inputs - YES

• Negative test cases - YES

• Minor version upgrade tests - NA

• **Major version upgrade tests -**NA

• Performance tests -

• Tooling impact - NA

• Client tests - NA

Check List

• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is under the terms of the Apache 2.0 and PostgreSQL licenses, and grant any person obtaining a copy of the contribution permission to relicense all or a portion of my contribution to the PostgreSQL License solely to contribute all or a portion of my contribution to the PostgreSQL open source project.

For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[coveralls]

Pull Request Test Coverage Report for Build 13387270067

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 395 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+0.02%) to 75.031%

---

Files with Coverage Reduction	New Missed Lines	%
contrib/babelfishpg_tsql/src/pl_funcs.c	2	19.04%
contrib/babelfishpg_tsql/src/pl_handler.c	133	90.09%
contrib/babelfishpg_tsql/src/pltsql_ruleutils.c	260	61.29%

Totals
Change from base Build 13365752176:	0.02%
Covered Lines:	47144
Relevant Lines:	62833

---

💛 - Coveralls