diff --git a/contrib/pg_background/Makefile b/contrib/pg_background/Makefile
index c4e717d..085fbff 100644
--- a/contrib/pg_background/Makefile
+++ b/contrib/pg_background/Makefile
@@ -6,6 +6,8 @@ OBJS = pg_background.o
 EXTENSION = pg_background
 DATA = pg_background--1.0.sql
 
+REGRESS = pg_background
+
 ifdef USE_PGXS
 PG_CONFIG = pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
diff --git a/contrib/pg_background/expected/pg_background.out b/contrib/pg_background/expected/pg_background.out
new file mode 100644
index 0000000..a6613ce
--- /dev/null
+++ b/contrib/pg_background/expected/pg_background.out
@@ -0,0 +1,31 @@
+CREATE EXTENSION pg_background;
+--run 6 workers which wait .0, .1, .2, .3, .4, .5 seconds respectively
+CREATE TABLE input as SELECT x FROM generate_series(0,.5,0.1) x ORDER BY x DESC;
+CREATE TABLE output(place int,value float);
+--sequence for indication of who's finished on which place
+CREATE sequence s start 1;
+CREATE TABLE handles as SELECT pg_background_launch(format('select pg_sleep(%s); insert into output values (nextval(''s''),%s);',x,x)) h FROM input;
+--wait until everyone finishes
+SELECT (SELECT * FROM pg_background_result(h) as (x text) limit 1) FROM handles;
+    x     
+----------
+ SELECT 1
+ SELECT 1
+ SELECT 1
+ SELECT 1
+ SELECT 1
+ SELECT 1
+(6 rows)
+
+--output results
+SELECT * FROM output ORDER BY place;
+ place | value 
+-------+-------
+     1 |     0
+     2 |   0.1
+     3 |   0.2
+     4 |   0.3
+     5 |   0.4
+     6 |   0.5
+(6 rows)
+
diff --git a/contrib/pg_background/sql/pg_background.sql b/contrib/pg_background/sql/pg_background.sql
new file mode 100644
index 0000000..770f0b8
--- /dev/null
+++ b/contrib/pg_background/sql/pg_background.sql
@@ -0,0 +1,12 @@
+CREATE EXTENSION pg_background;
+
+--run 6 workers which wait .0, .1, .2, .3, .4, .5 seconds respectively
+CREATE TABLE input as SELECT x FROM generate_series(0,.5,0.1) x ORDER BY x DESC;
+CREATE TABLE output(place int,value float);
+--sequence for indication of who's finished on which place
+CREATE sequence s start 1;
+CREATE TABLE handles as SELECT pg_background_launch(format('select pg_sleep(%s); insert into output values (nextval(''s''),%s);',x,x)) h FROM input;
+--wait until everyone finishes
+SELECT (SELECT * FROM pg_background_result(h) as (x text) limit 1) FROM handles;
+--output results
+SELECT * FROM output ORDER BY place;