diff options
| author | Bob Van Landuyt <bob@vanlanduyt.co> | 2017-09-07 12:46:58 +0300 |
|---|---|---|
| committer | Bob Van Landuyt <bob@vanlanduyt.co> | 2017-10-04 23:49:41 +0300 |
| commit | 530cf2a2669ea1ee3c41d48a15919f875babefa4 (patch) | |
| tree | 1074edcc5f2dd8aa6d7840d2430f52793de7790c /spec/lib/gitlab/sql | |
| parent | 438a0773dc850d3fa690881ea0b022bc27435e1e (diff) | |
Don't break when building unions on empty collections
Diffstat (limited to 'spec/lib/gitlab/sql')
| -rw-r--r-- | spec/lib/gitlab/sql/union_spec.rb | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/spec/lib/gitlab/sql/union_spec.rb b/spec/lib/gitlab/sql/union_spec.rb index 8026fba9f0a..fe6422c32b6 100644 --- a/spec/lib/gitlab/sql/union_spec.rb +++ b/spec/lib/gitlab/sql/union_spec.rb @@ -29,5 +29,12 @@ describe Gitlab::SQL::Union do expect(union.to_sql).to include('UNION ALL') end + + it 'returns `NULL` if all relations are empty' do + empty_relation = User.none + union = described_class.new([empty_relation, empty_relation]) + + expect(union.to_sql).to eq('NULL') + end end end |