diff --git a/contrib/pg_freespacemap/Makefile b/contrib/pg_freespacemap/Makefile
index da40b80c7c..23cfb67c35 100644
--- a/contrib/pg_freespacemap/Makefile
+++ b/contrib/pg_freespacemap/Makefile
@@ -9,6 +9,7 @@ EXTENSION = pg_freespacemap
 DATA = pg_freespacemap--1.1.sql pg_freespacemap--1.1--1.2.sql \
 	pg_freespacemap--1.0--1.1.sql
 PGFILEDESC = "pg_freespacemap - monitoring of free space map"
+REGRESS = pg_freespacemap
 
 ifdef USE_PGXS
 PG_CONFIG = pg_config
diff --git a/contrib/pg_freespacemap/expected/pg_freespacemap.out b/contrib/pg_freespacemap/expected/pg_freespacemap.out
new file mode 100644
index 0000000000..838936bb39
--- /dev/null
+++ b/contrib/pg_freespacemap/expected/pg_freespacemap.out
@@ -0,0 +1,16 @@
+CREATE EXTENSION pg_freespacemap;
+CREATE TABLE t1(c1 int);
+INSERT INTO t1 VALUES (generate_series(1, 100));
+VACUUM t1;
+SELECT * FROM pg_freespace('t1');
+ blkno | avail 
+-------+-------
+     0 |  4544
+(1 row)
+
+SELECT * FROM pg_freespace('t1', 0);
+ pg_freespace 
+--------------
+         4544
+(1 row)
+
diff --git a/contrib/pg_freespacemap/sql/pg_freespacemap.sql b/contrib/pg_freespacemap/sql/pg_freespacemap.sql
new file mode 100644
index 0000000000..f69f767811
--- /dev/null
+++ b/contrib/pg_freespacemap/sql/pg_freespacemap.sql
@@ -0,0 +1,9 @@
+CREATE EXTENSION pg_freespacemap;
+
+CREATE TABLE t1(c1 int);
+
+INSERT INTO t1 VALUES (generate_series(1, 100));
+VACUUM t1;
+
+SELECT * FROM pg_freespace('t1');
+SELECT * FROM pg_freespace('t1', 0);