YQ-2757: PostgreSQL basic integration tests

[vitalyisaev2]

No description provided.

[codecov]

Codecov Report

Attention: 17 lines in your changes are missing coverage. Please review.

Comparison is base (1adaa96) 48.05% compared to head (5248888) 52.71%.

Files	Patch %	Lines
tests/utils/protobuf.go	30.00%	13 Missing and 1 partial ⚠️
tests/infra/datasource/postgresql/datasource.go	92.30%	1 Missing and 1 partial ⚠️
app/server/validate.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
+ Coverage   48.05%   52.71%   +4.66%     
==========================================
  Files          65       66       +1     
  Lines        3806     3847      +41     
==========================================
+ Hits         1829     2028     +199     
+ Misses       1819     1647     -172     
- Partials      158      172      +14     

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