Backport various EE changes to Gitlab::Databasebackport-gitlab-database

These changes are useful for CE as well. For example, the MR
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20720 can make
use of some of the backported methods.

1 files changed, 86 insertions, 0 deletions

diff --git a/spec/lib/gitlab/database_spec.rb b/spec/lib/gitlab/database_spec.rb
index 782e4e45a91..7d76519dddd 100644
--- a/spec/lib/gitlab/database_spec.rb
+++ b/spec/lib/gitlab/database_spec.rb
@@ -65,6 +65,28 @@ describe Gitlab::Database do
     end
   end
 
+  describe '.postgresql_9_or_less?' do
+    it 'returns false when using MySQL' do
+      allow(described_class).to receive(:postgresql?).and_return(false)
+
+      expect(described_class.postgresql_9_or_less?).to eq(false)
+    end
+
+    it 'returns true when using PostgreSQL 9.6' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('9.6')
+
+      expect(described_class.postgresql_9_or_less?).to eq(true)
+    end
+
+    it 'returns false when using PostgreSQL 10 or newer' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('10')
+
+      expect(described_class.postgresql_9_or_less?).to eq(false)
+    end
+  end
+
   describe '.join_lateral_supported?' do
     it 'returns false when using MySQL' do
       allow(described_class).to receive(:postgresql?).and_return(false)
@@ -109,6 +131,70 @@ describe Gitlab::Database do
     end
   end
 
+  describe '.pg_wal_lsn_diff' do
+    it 'returns old name when using PostgreSQL 9.6' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('9.6')
+
+      expect(described_class.pg_wal_lsn_diff).to eq('pg_xlog_location_diff')
+    end
+
+    it 'returns new name when using PostgreSQL 10 or newer' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('10')
+
+      expect(described_class.pg_wal_lsn_diff).to eq('pg_wal_lsn_diff')
+    end
+  end
+
+  describe '.pg_current_wal_insert_lsn' do
+    it 'returns old name when using PostgreSQL 9.6' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('9.6')
+
+      expect(described_class.pg_current_wal_insert_lsn).to eq('pg_current_xlog_insert_location')
+    end
+
+    it 'returns new name when using PostgreSQL 10 or newer' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('10')
+
+      expect(described_class.pg_current_wal_insert_lsn).to eq('pg_current_wal_insert_lsn')
+    end
+  end
+
+  describe '.pg_last_wal_receive_lsn' do
+    it 'returns old name when using PostgreSQL 9.6' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('9.6')
+
+      expect(described_class.pg_last_wal_receive_lsn).to eq('pg_last_xlog_receive_location')
+    end
+
+    it 'returns new name when using PostgreSQL 10 or newer' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('10')
+
+      expect(described_class.pg_last_wal_receive_lsn).to eq('pg_last_wal_receive_lsn')
+    end
+  end
+
+  describe '.pg_last_wal_replay_lsn' do
+    it 'returns old name when using PostgreSQL 9.6' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('9.6')
+
+      expect(described_class.pg_last_wal_replay_lsn).to eq('pg_last_xlog_replay_location')
+    end
+
+    it 'returns new name when using PostgreSQL 10 or newer' do
+      allow(described_class).to receive(:postgresql?).and_return(true)
+      allow(described_class).to receive(:version).and_return('10')
+
+      expect(described_class.pg_last_wal_replay_lsn).to eq('pg_last_wal_replay_lsn')
+    end
+  end
+
   describe '.nulls_last_order' do
     context 'when using PostgreSQL' do
       before do