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require 'spec_helper'
describe Gitlab::SQL::Union, lib: true do
describe '#to_sql' do
it 'returns a String joining relations together using a UNION' do
rel1 = User.where(email: 'alice@example.com')
rel2 = User.where(email: 'bob@example.com')
union = described_class.new([rel1, rel2])
sql1 = rel1.reorder(nil).to_sql
sql2 = rel2.reorder(nil).to_sql
expect(union.to_sql).to eq("#{sql1}\nUNION\n#{sql2}")
end
end
end
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