[Draft] Adding integration test for bigint unsgined Custom Transformation

[VardhanThigle]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 45.95%. Comparing base (91b5be3) to head (72fa42f).

Files with missing lines	Patch %	Lines
...he/beam/it/gcp/spanner/SpannerResourceManager.java	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2052      +/-   ##
============================================
- Coverage     45.95%   45.95%   -0.01%     
- Complexity     3791     4115     +324     
============================================
  Files           850      850              
  Lines         50764    50766       +2     
  Branches       5340     5341       +1     
============================================
- Hits          23330    23327       -3     
- Misses        25741    25746       +5     
  Partials       1693     1693              

Components	Coverage Δ
spanner-templates	67.56% <ø> (-0.02%)	⬇️
spanner-import-export	65.44% <ø> (-0.06%)	⬇️
spanner-live-forward-migration	76.30% <ø> (ø)
spanner-live-reverse-replication	77.25% <ø> (ø)
spanner-bulk-migration	86.87% <ø> (ø)

Files with missing lines	Coverage Δ
...he/beam/it/gcp/spanner/SpannerResourceManager.java	75.78% <0.00%> (-0.69%)	⬇️

... and 4 files with indirect coverage changes