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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::PostgresSequence, type: :model, feature_category: :database do
# PostgresSequence does not `behaves_like 'a postgres model'` because it does not correspond 1-1 with a single entry
# in pg_class
let(:schema) { ActiveRecord::Base.connection.current_schema }
let(:table_name) { '_test_table' }
let(:table_name_without_sequence) { '_test_table_without_sequence' }
before do
ActiveRecord::Base.connection.execute(<<~SQL)
CREATE TABLE #{table_name} (
id bigserial PRIMARY KEY NOT NULL
);
CREATE TABLE #{table_name_without_sequence} (
id bigint PRIMARY KEY NOT NULL
);
SQL
end
describe '#by_table_name' do
context 'when table does not have a sequence' do
it 'returns an empty collection' do
expect(described_class.by_table_name(table_name_without_sequence)).to be_empty
end
end
it 'returns the sequence for a given table' do
expect(described_class.by_table_name(table_name).first[:table_name]).to eq(table_name)
end
end
end
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