Class: PgHelper::ValidationHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/pg_helper/support_classes.rb

Overview

data validation

Class Method Summary collapse

Class Method Details

.require_single_column!(pg_result) ⇒ Object 



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# File 'lib/pg_helper/support_classes.rb', line 31

def require_single_column!(pg_result)
  fail(
    PgHelperErrorInvalidColumnCount,
    "expected 1 column, got #{pg_result.nfields}"
  ) if pg_result.nfields != 1
end

.require_single_row!(pg_result) ⇒ Object 



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# File 'lib/pg_helper/support_classes.rb', line 24

def require_single_row!(pg_result)
  fail(
    PgHelperErrorInvalidRowCount,
    "expected 1 row, got #{pg_result.ntuples}"
  ) if pg_result.ntuples != 1
end

.verify_single_cell!(pg_result) ⇒ Object 



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# File 'lib/pg_helper/support_classes.rb', line 38

def verify_single_cell!(pg_result)
  require_single_row!(pg_result)
  require_single_column!(pg_result)
end