diff options
Diffstat (limited to 'spec/lib/gitlab/sql/union_spec.rb')
-rw-r--r-- | spec/lib/gitlab/sql/union_spec.rb | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/spec/lib/gitlab/sql/union_spec.rb b/spec/lib/gitlab/sql/union_spec.rb index 0cdbab87544..849edb09476 100644 --- a/spec/lib/gitlab/sql/union_spec.rb +++ b/spec/lib/gitlab/sql/union_spec.rb @@ -1,16 +1,26 @@ require 'spec_helper' describe Gitlab::SQL::Union, lib: true do + let(:relation_1) { User.where(email: 'alice@example.com').select(:id) } + let(:relation_2) { User.where(email: 'bob@example.com').select(:id) } + + def to_sql(relation) + relation.reorder(nil).to_sql + end + 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]) + union = described_class.new([relation_1, relation_2]) + + expect(union.to_sql).to eq("#{to_sql(relation_1)}\nUNION\n#{to_sql(relation_2)}") + end - sql1 = rel1.reorder(nil).to_sql - sql2 = rel2.reorder(nil).to_sql + it 'skips Model.none segements' do + empty_relation = User.none + union = described_class.new([empty_relation, relation_1, relation_2]) - expect(union.to_sql).to eq("#{sql1}\nUNION\n#{sql2}") + expect{User.where("users.id IN (#{union.to_sql})").to_a}.not_to raise_error + expect(union.to_sql).to eq("#{to_sql(relation_1)}\nUNION\n#{to_sql(relation_2)}") end end end |