test(Spanner): In spanner reverse replication, added integration test…

[pratickchokhani]

… for numerical Infinity and Nan values.

[gemini-code-assist]

Summary of Changes

Hello @pratickchokhani, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a crucial integration test for the Spanner to SourceDB pipeline, specifically targeting the robust handling of numerical boundary conditions during reverse replication. The new test case ensures that extreme numerical values, including positive and negative infinity, as well as Not-a-Number (NaN) values, are accurately replicated from Spanner to MySQL, thereby enhancing the data integrity and reliability of the replication process for complex numerical data types.

Highlights

• New Integration Test: An integration test has been added to verify the correct handling of numerical boundary values (Infinity and NaN) during Spanner reverse replication to MySQL.
• Schema Updates: New test tables, BoundaryConversionTestTable, have been introduced in both Spanner and MySQL schemas to support the new test case.
• Comprehensive Value Testing: The test covers Byte, Short, Integer, Long min/max values, Float and Double positive/negative infinity and NaN, and boundary BigDecimal values.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.86%. Comparing base (368d6f5) to head (ec81dac).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3198      +/-   ##
============================================
+ Coverage     50.80%   50.86%   +0.06%     
- Complexity     5124     5133       +9     
============================================
  Files           976      976              
  Lines         60058    60092      +34     
  Branches       6569     6572       +3     
============================================
+ Hits          30511    30567      +56     
+ Misses        27406    27374      -32     
- Partials       2141     2151      +10     

Components	Coverage Δ
spanner-templates	71.02% <100.00%> (+0.02%)	⬆️
spanner-import-export	68.99% <ø> (ø)
spanner-live-forward-migration	80.12% <ø> (+0.02%)	⬆️
spanner-live-reverse-replication	77.77% <100.00%> (+0.05%)	⬆️
spanner-bulk-migration	88.44% <ø> (ø)

Files with missing lines	Coverage Δ
...rt/v2/templates/dbutils/dml/MySQLDMLGenerator.java	88.44% <100.00%> (+0.10%)	⬆️

... and 6 files with indirect coverage changes

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