41 lines
1,006 B
Ruby
41 lines
1,006 B
Ruby
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# frozen_string_literal: true
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require 'spec_helper'
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describe FromUnion do
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describe '.from_union' do
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let(:model) do
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Class.new(ActiveRecord::Base) do
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self.table_name = 'users'
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include FromUnion
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end
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end
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it 'selects from the results of the UNION' do
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query = model.from_union([model.where(id: 1), model.where(id: 2)])
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expect(query.to_sql).to match(/FROM \(SELECT.+UNION.+SELECT.+\) users/m)
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end
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it 'supports the use of a custom alias for the sub query' do
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query = model.from_union(
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[model.where(id: 1), model.where(id: 2)],
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alias_as: 'kittens'
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)
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expect(query.to_sql).to match(/FROM \(SELECT.+UNION.+SELECT.+\) kittens/m)
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end
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it 'supports keeping duplicate rows' do
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query = model.from_union(
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[model.where(id: 1), model.where(id: 2)],
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remove_duplicates: false
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)
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expect(query.to_sql)
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.to match(/FROM \(SELECT.+UNION ALL.+SELECT.+\) users/m)
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end
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end
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end
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