2 files changed, 34 insertions, 0 deletions
diff --git a/src/test/regress/expected/brin.out b/src/test/regress/expected/brin.out
index 3b9c0db833b..a40f87aea05 100644
--- a/src/test/regress/expected/brin.out
+++ b/src/test/regress/expected/brin.out
@@ -392,6 +392,12 @@ INSERT INTO brintest SELECT
 	format('%s/%s%s', odd, even, tenthous)::pg_lsn,
 	box(point(odd, even), point(thousand, twothousand))
 FROM tenk1 ORDER BY unique2 LIMIT 5 OFFSET 5;
+SELECT brin_desummarize_range('brinidx', 0);
+ brin_desummarize_range 
+------------------------
+ 
+(1 row)
+
 VACUUM brintest;  -- force a summarization cycle in brinidx
 UPDATE brintest SET int8col = int8col * int4col;
 UPDATE brintest SET textcol = '' WHERE textcol IS NOT NULL;
@@ -406,6 +412,27 @@ SELECT brin_summarize_new_values('brinidx'); -- ok, no change expected
                          0
 (1 row)
 
+-- Tests for brin_desummarize_range
+SELECT brin_desummarize_range('brinidx', -1); -- error, invalid range
+ERROR:  block number out of range: -1
+SELECT brin_desummarize_range('brinidx', 0);
+ brin_desummarize_range 
+------------------------
+ 
+(1 row)
+
+SELECT brin_desummarize_range('brinidx', 0);
+ brin_desummarize_range 
+------------------------
+ 
+(1 row)
+
+SELECT brin_desummarize_range('brinidx', 100000000);
+ brin_desummarize_range 
+------------------------
+ 
+(1 row)
+
 -- Test brin_summarize_range
 CREATE TABLE brin_summarize (
     value int
diff --git a/src/test/regress/sql/brin.sql b/src/test/regress/sql/brin.sql
index da73df36593..521b22fe566 100644
--- a/src/test/regress/sql/brin.sql
+++ b/src/test/regress/sql/brin.sql
@@ -400,6 +400,7 @@ INSERT INTO brintest SELECT
 	box(point(odd, even), point(thousand, twothousand))
 FROM tenk1 ORDER BY unique2 LIMIT 5 OFFSET 5;
 
+SELECT brin_desummarize_range('brinidx', 0);
 VACUUM brintest;  -- force a summarization cycle in brinidx
 
 UPDATE brintest SET int8col = int8col * int4col;
@@ -410,6 +411,12 @@ SELECT brin_summarize_new_values('brintest'); -- error, not an index
 SELECT brin_summarize_new_values('tenk1_unique1'); -- error, not a BRIN index
 SELECT brin_summarize_new_values('brinidx'); -- ok, no change expected
 
+-- Tests for brin_desummarize_range
+SELECT brin_desummarize_range('brinidx', -1); -- error, invalid range
+SELECT brin_desummarize_range('brinidx', 0);
+SELECT brin_desummarize_range('brinidx', 0);
+SELECT brin_desummarize_range('brinidx', 100000000);
+
 -- Test brin_summarize_range
 CREATE TABLE brin_summarize (
     value int