1 files changed, 239 insertions, 0 deletions
diff --git a/src/test/subscription/t/010_truncate.pl b/src/test/subscription/t/010_truncate.pl
new file mode 100644
index 0000000..a6fe82a
--- /dev/null
+++ b/src/test/subscription/t/010_truncate.pl
@@ -0,0 +1,239 @@
+
+# Copyright (c) 2021-2022, PostgreSQL Global Development Group
+
+# Test TRUNCATE
+use strict;
+use warnings;
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+use Test::More;
+
+# setup
+
+my $node_publisher = PostgreSQL::Test::Cluster->new('publisher');
+$node_publisher->init(allows_streaming => 'logical');
+$node_publisher->start;
+
+my $node_subscriber = PostgreSQL::Test::Cluster->new('subscriber');
+$node_subscriber->init(allows_streaming => 'logical');
+$node_subscriber->append_conf('postgresql.conf',
+	qq(max_logical_replication_workers = 6));
+$node_subscriber->start;
+
+my $publisher_connstr = $node_publisher->connstr . ' dbname=postgres';
+
+$node_publisher->safe_psql('postgres',
+	"CREATE TABLE tab1 (a int PRIMARY KEY)");
+
+$node_subscriber->safe_psql('postgres',
+	"CREATE TABLE tab1 (a int PRIMARY KEY)");
+
+$node_publisher->safe_psql('postgres',
+	"CREATE TABLE tab2 (a int PRIMARY KEY)");
+
+$node_subscriber->safe_psql('postgres',
+	"CREATE TABLE tab2 (a int PRIMARY KEY)");
+
+$node_publisher->safe_psql('postgres',
+	"CREATE TABLE tab3 (a int PRIMARY KEY)");
+
+$node_subscriber->safe_psql('postgres',
+	"CREATE TABLE tab3 (a int PRIMARY KEY)");
+
+$node_publisher->safe_psql('postgres',
+	"CREATE TABLE tab4 (x int PRIMARY KEY, y int REFERENCES tab3)");
+
+$node_subscriber->safe_psql('postgres',
+	"CREATE TABLE tab4 (x int PRIMARY KEY, y int REFERENCES tab3)");
+
+$node_subscriber->safe_psql('postgres',
+	"CREATE SEQUENCE seq1 OWNED BY tab1.a");
+$node_subscriber->safe_psql('postgres', "ALTER SEQUENCE seq1 START 101");
+
+$node_publisher->safe_psql('postgres',
+	"CREATE PUBLICATION pub1 FOR TABLE tab1");
+$node_publisher->safe_psql('postgres',
+	"CREATE PUBLICATION pub2 FOR TABLE tab2 WITH (publish = insert)");
+$node_publisher->safe_psql('postgres',
+	"CREATE PUBLICATION pub3 FOR TABLE tab3, tab4");
+$node_subscriber->safe_psql('postgres',
+	"CREATE SUBSCRIPTION sub1 CONNECTION '$publisher_connstr' PUBLICATION pub1"
+);
+$node_subscriber->safe_psql('postgres',
+	"CREATE SUBSCRIPTION sub2 CONNECTION '$publisher_connstr' PUBLICATION pub2"
+);
+$node_subscriber->safe_psql('postgres',
+	"CREATE SUBSCRIPTION sub3 CONNECTION '$publisher_connstr' PUBLICATION pub3"
+);
+
+# Wait for initial sync of all subscriptions
+$node_subscriber->wait_for_subscription_sync;
+
+# insert data to truncate
+
+$node_subscriber->safe_psql('postgres',
+	"INSERT INTO tab1 VALUES (1), (2), (3)");
+
+$node_publisher->wait_for_catchup('sub1');
+
+# truncate and check
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab1");
+
+$node_publisher->wait_for_catchup('sub1');
+
+my $result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab1");
+is($result, qq(0||), 'truncate replicated');
+
+$result = $node_subscriber->safe_psql('postgres', "SELECT nextval('seq1')");
+is($result, qq(1), 'sequence not restarted');
+
+# truncate with restart identity
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab1 RESTART IDENTITY");
+
+$node_publisher->wait_for_catchup('sub1');
+
+$result = $node_subscriber->safe_psql('postgres', "SELECT nextval('seq1')");
+is($result, qq(101), 'truncate restarted identities');
+
+# test publication that does not replicate truncate
+
+$node_subscriber->safe_psql('postgres',
+	"INSERT INTO tab2 VALUES (1), (2), (3)");
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab2");
+
+$node_publisher->wait_for_catchup('sub2');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab2");
+is($result, qq(3|1|3), 'truncate not replicated');
+
+$node_publisher->safe_psql('postgres',
+	"ALTER PUBLICATION pub2 SET (publish = 'insert, truncate')");
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab2");
+
+$node_publisher->wait_for_catchup('sub2');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab2");
+is($result, qq(0||), 'truncate replicated after publication change');
+
+# test multiple tables connected by foreign keys
+
+$node_subscriber->safe_psql('postgres',
+	"INSERT INTO tab3 VALUES (1), (2), (3)");
+$node_subscriber->safe_psql('postgres',
+	"INSERT INTO tab4 VALUES (11, 1), (111, 1), (22, 2)");
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab3, tab4");
+
+$node_publisher->wait_for_catchup('sub3');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab3");
+is($result, qq(0||), 'truncate of multiple tables replicated');
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(x), max(x) FROM tab4");
+is($result, qq(0||), 'truncate of multiple tables replicated');
+
+# test truncate of multiple tables, some of which are not published
+
+$node_subscriber->safe_psql('postgres', "DROP SUBSCRIPTION sub2");
+$node_publisher->safe_psql('postgres', "DROP PUBLICATION pub2");
+
+$node_subscriber->safe_psql('postgres',
+	"INSERT INTO tab1 VALUES (1), (2), (3)");
+$node_subscriber->safe_psql('postgres',
+	"INSERT INTO tab2 VALUES (1), (2), (3)");
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab1, tab2");
+
+$node_publisher->wait_for_catchup('sub1');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab1");
+is($result, qq(0||), 'truncate of multiple tables some not published');
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab2");
+is($result, qq(3|1|3), 'truncate of multiple tables some not published');
+
+# Test that truncate works for synchronous logical replication
+
+$node_publisher->safe_psql('postgres',
+	"ALTER SYSTEM SET synchronous_standby_names TO 'sub1'");
+$node_publisher->safe_psql('postgres', "SELECT pg_reload_conf()");
+
+# insert data to truncate
+
+$node_publisher->safe_psql('postgres',
+	"INSERT INTO tab1 VALUES (1), (2), (3)");
+
+$node_publisher->wait_for_catchup('sub1');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab1");
+is($result, qq(3|1|3), 'check synchronous logical replication');
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab1");
+
+$node_publisher->wait_for_catchup('sub1');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab1");
+is($result, qq(0||),
+	'truncate replicated in synchronous logical replication');
+
+$node_publisher->safe_psql('postgres',
+	"ALTER SYSTEM RESET synchronous_standby_names");
+$node_publisher->safe_psql('postgres', "SELECT pg_reload_conf()");
+
+# test that truncate works for logical replication when there are multiple
+# subscriptions for a single table
+
+$node_publisher->safe_psql('postgres', "CREATE TABLE tab5 (a int)");
+
+$node_subscriber->safe_psql('postgres', "CREATE TABLE tab5 (a int)");
+
+$node_publisher->safe_psql('postgres',
+	"CREATE PUBLICATION pub5 FOR TABLE tab5");
+$node_subscriber->safe_psql('postgres',
+	"CREATE SUBSCRIPTION sub5_1 CONNECTION '$publisher_connstr' PUBLICATION pub5"
+);
+$node_subscriber->safe_psql('postgres',
+	"CREATE SUBSCRIPTION sub5_2 CONNECTION '$publisher_connstr' PUBLICATION pub5"
+);
+
+# wait for initial data sync
+$node_subscriber->wait_for_subscription_sync;
+
+# insert data to truncate
+
+$node_publisher->safe_psql('postgres',
+	"INSERT INTO tab5 VALUES (1), (2), (3)");
+
+$node_publisher->wait_for_catchup('sub5_1');
+$node_publisher->wait_for_catchup('sub5_2');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab5");
+is($result, qq(6|1|3), 'insert replicated for multiple subscriptions');
+
+$node_publisher->safe_psql('postgres', "TRUNCATE tab5");
+
+$node_publisher->wait_for_catchup('sub5_1');
+$node_publisher->wait_for_catchup('sub5_2');
+
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT count(*), min(a), max(a) FROM tab5");
+is($result, qq(0||), 'truncate replicated for multiple subscriptions');
+
+# check deadlocks
+$result = $node_subscriber->safe_psql('postgres',
+	"SELECT deadlocks FROM pg_stat_database WHERE datname='postgres'");
+is($result, qq(0), 'no deadlocks detected');
+
+done_testing();