diff --git a/.github/workflows/regression.yml b/.github/workflows/regression.yml
index 812c5a1e..116b58fe 100644
--- a/.github/workflows/regression.yml
+++ b/.github/workflows/regression.yml
@@ -33,7 +33,7 @@ jobs:
         run: echo "$PWD/bin" >> $GITHUB_PATH
 
       - name: Create testts directory
-        run: sudo -u postgres mkdir /tmp/testts
+        run: sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
 
       - name: Create testts tablespace
         run: sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
@@ -44,3 +44,10 @@ jobs:
       - name: Show regression.diffs
         if: ${{ failure() }}
         run: cat regress/regression.diffs
+
+      - name: Remove tests tablespace
+        run: sudo -u postgres psql -c "DROP TABLESPACE testts"
+
+      - name: Remove testts directory
+        run: sudo -u postgres rm -rf /tmp/testts
+
diff --git a/regress/expected/tablespace.out b/regress/expected/tablespace.out
index 11c7e106..fafe03fa 100644
--- a/regress/expected/tablespace.out
+++ b/regress/expected/tablespace.out
@@ -4,6 +4,10 @@ SET client_min_messages = warning;
 --
 -- Note: in order to pass this test you must create a tablespace called 'testts'
 --
+-- Test tablespace creation example:
+--   $ sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
+--   $ sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
+--
 SELECT spcname FROM pg_tablespace WHERE spcname = 'testts';
  spcname 
 ---------
@@ -245,3 +249,5 @@ ORDER BY relname;
 --using --indexes-only and --index option together
 \! pg_repack --dbname=contrib_regression --table=testts1 --only-indexes --index=testts1_pkey
 ERROR: cannot specify --index (-i) and --table (-t)
+-- cleanup
+DROP TABLE testts1;
diff --git a/regress/expected/tablespace_1.out b/regress/expected/tablespace_1.out
index 4ef2d04a..54b1a41d 100644
--- a/regress/expected/tablespace_1.out
+++ b/regress/expected/tablespace_1.out
@@ -4,6 +4,10 @@ SET client_min_messages = warning;
 --
 -- Note: in order to pass this test you must create a tablespace called 'testts'
 --
+-- Test tablespace creation example:
+--   $ sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
+--   $ sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
+--
 SELECT spcname FROM pg_tablespace WHERE spcname = 'testts';
  spcname 
 ---------
@@ -245,3 +249,5 @@ ORDER BY relname;
 --using --indexes-only and --index option together
 \! pg_repack --dbname=contrib_regression --table=testts1 --only-indexes --index=testts1_pkey
 ERROR: cannot specify --index (-i) and --table (-t)
+-- cleanup
+DROP TABLE testts1;
diff --git a/regress/expected/tablespace_2.out b/regress/expected/tablespace_2.out
index 521f82a6..f2296aa5 100644
--- a/regress/expected/tablespace_2.out
+++ b/regress/expected/tablespace_2.out
@@ -4,6 +4,10 @@ SET client_min_messages = warning;
 --
 -- Note: in order to pass this test you must create a tablespace called 'testts'
 --
+-- Test tablespace creation example:
+--   $ sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
+--   $ sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
+--
 SELECT spcname FROM pg_tablespace WHERE spcname = 'testts';
  spcname 
 ---------
@@ -245,3 +249,5 @@ ORDER BY relname;
 --using --indexes-only and --index option together
 \! pg_repack --dbname=contrib_regression --table=testts1 --only-indexes --index=testts1_pkey
 ERROR: cannot specify --index (-i) and --table (-t)
+-- cleanup
+DROP TABLE testts1;
diff --git a/regress/expected/tablespace_3.out b/regress/expected/tablespace_3.out
index a3d023c6..0b7ee95e 100644
--- a/regress/expected/tablespace_3.out
+++ b/regress/expected/tablespace_3.out
@@ -4,6 +4,10 @@ SET client_min_messages = warning;
 --
 -- Note: in order to pass this test you must create a tablespace called 'testts'
 --
+-- Test tablespace creation example:
+--   $ sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
+--   $ sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
+--
 SELECT spcname FROM pg_tablespace WHERE spcname = 'testts';
  spcname 
 ---------
@@ -245,3 +249,5 @@ ORDER BY relname;
 --using --indexes-only and --index option together
 \! pg_repack --dbname=contrib_regression --table=testts1 --only-indexes --index=testts1_pkey
 ERROR: cannot specify --index (-i) and --table (-t)
+-- cleanup
+DROP TABLE testts1;
diff --git a/regress/expected/tablespace_4.out b/regress/expected/tablespace_4.out
index cc6495f8..876b6d89 100644
--- a/regress/expected/tablespace_4.out
+++ b/regress/expected/tablespace_4.out
@@ -4,6 +4,10 @@ SET client_min_messages = warning;
 --
 -- Note: in order to pass this test you must create a tablespace called 'testts'
 --
+-- Test tablespace creation example:
+--   $ sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
+--   $ sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
+--
 SELECT spcname FROM pg_tablespace WHERE spcname = 'testts';
  spcname 
 ---------
@@ -245,3 +249,5 @@ ORDER BY relname;
 --using --indexes-only and --index option together
 \! pg_repack --dbname=contrib_regression --table=testts1 --only-indexes --index=testts1_pkey
 ERROR: cannot specify --index (-i) and --table (-t)
+-- cleanup
+DROP TABLE testts1;
diff --git a/regress/sql/tablespace.sql b/regress/sql/tablespace.sql
index 78790d87..e3758c1e 100644
--- a/regress/sql/tablespace.sql
+++ b/regress/sql/tablespace.sql
@@ -5,6 +5,10 @@ SET client_min_messages = warning;
 --
 -- Note: in order to pass this test you must create a tablespace called 'testts'
 --
+-- Test tablespace creation example:
+--   $ sudo -u postgres mkdir -p /tmp/testts && chmod 0700 /tmp/testts
+--   $ sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
+--
 
 SELECT spcname FROM pg_tablespace WHERE spcname = 'testts';
 -- If the query above failed you must create the 'testts' tablespace;
@@ -147,3 +151,7 @@ ORDER BY relname;
 
 --using --indexes-only and --index option together
 \! pg_repack --dbname=contrib_regression --table=testts1 --only-indexes --index=testts1_pkey
+
+-- cleanup
+DROP TABLE testts1;
+