v3-0002-Increase-coverage-for-worker_spi-by.patch

diff --git a/src/test/modules/worker_spi/Makefile b/src/test/modules/worker_spi/Makefile
index 7cdb33c9df..cbf9b2e37f 100644
--- a/src/test/modules/worker_spi/Makefile
+++ b/src/test/modules/worker_spi/Makefile
@@ -6,6 +6,14 @@ EXTENSION = worker_spi
 DATA = worker_spi--1.0.sql
 PGFILEDESC = "worker_spi - background worker example"
 
+REGRESS = worker_spi
+
+# enable our module in shared_preload_libraries for dynamic bgworkers
+REGRESS_OPTS = --temp-config $(top_srcdir)/src/test/modules/worker_spi/dynamic.conf
+
+# Disable installcheck to ensure we cover dynamic bgworkers.
+NO_INSTALLCHECK = 1
+
 ifdef USE_PGXS
 PG_CONFIG = pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
diff --git a/src/test/modules/worker_spi/dynamic.conf b/src/test/modules/worker_spi/dynamic.conf
new file mode 100644
index 0000000000..bfe015f664
--- /dev/null
+++ b/src/test/modules/worker_spi/dynamic.conf
@@ -0,0 +1,2 @@
+shared_preload_libraries = worker_spi
+worker_spi.database = contrib_regression
diff --git a/src/test/modules/worker_spi/expected/worker_spi.out b/src/test/modules/worker_spi/expected/worker_spi.out
new file mode 100644
index 0000000000..dc0a79bf75
--- /dev/null
+++ b/src/test/modules/worker_spi/expected/worker_spi.out
@@ -0,0 +1,50 @@
+CREATE EXTENSION worker_spi;
+SELECT worker_spi_launch(4) IS NOT NULL;
+ ?column? 
+----------
+ t
+(1 row)
+
+-- wait until the worker completes its initialization
+DO $$
+DECLARE
+	visible bool;
+	loops int := 0;
+BEGIN
+	LOOP
+		visible := table_name IS NOT NULL
+			FROM information_schema.tables
+			WHERE table_schema = 'schema4' AND table_name = 'counted';
+		IF visible OR loops > 120 * 10 THEN EXIT; END IF;
+		PERFORM pg_sleep(0.1);
+		loops := loops + 1;
+	END LOOP;
+END
+$$;
+INSERT INTO schema4.counted VALUES ('total', 0), ('delta', 1);
+SELECT pg_reload_conf();
+ pg_reload_conf 
+----------------
+ t
+(1 row)
+
+-- wait until the worker has processed the tuple we just inserted
+DO $$
+DECLARE
+	count int;
+	loops int := 0;
+BEGIN
+	LOOP
+		count := count(*) FROM schema4.counted WHERE type = 'delta';
+		IF count = 0 OR loops > 120 * 10 THEN EXIT; END IF;
+		PERFORM pg_sleep(0.1);
+		loops := loops + 1;
+	END LOOP;
+END
+$$;
+SELECT * FROM schema4.counted;
+ type  | value 
+-------+-------
+ total |     1
+(1 row)
+
diff --git a/src/test/modules/worker_spi/sql/worker_spi.sql b/src/test/modules/worker_spi/sql/worker_spi.sql
new file mode 100644
index 0000000000..4683523b29
--- /dev/null
+++ b/src/test/modules/worker_spi/sql/worker_spi.sql
@@ -0,0 +1,35 @@
+CREATE EXTENSION worker_spi;
+SELECT worker_spi_launch(4) IS NOT NULL;
+-- wait until the worker completes its initialization
+DO $$
+DECLARE
+	visible bool;
+	loops int := 0;
+BEGIN
+	LOOP
+		visible := table_name IS NOT NULL
+			FROM information_schema.tables
+			WHERE table_schema = 'schema4' AND table_name = 'counted';
+		IF visible OR loops > 120 * 10 THEN EXIT; END IF;
+		PERFORM pg_sleep(0.1);
+		loops := loops + 1;
+	END LOOP;
+END
+$$;
+INSERT INTO schema4.counted VALUES ('total', 0), ('delta', 1);
+SELECT pg_reload_conf();
+-- wait until the worker has processed the tuple we just inserted
+DO $$
+DECLARE
+	count int;
+	loops int := 0;
+BEGIN
+	LOOP
+		count := count(*) FROM schema4.counted WHERE type = 'delta';
+		IF count = 0 OR loops > 120 * 10 THEN EXIT; END IF;
+		PERFORM pg_sleep(0.1);
+		loops := loops + 1;
+	END LOOP;
+END
+$$;
+SELECT * FROM schema4.counted;
-- 
2.17.1