From 611ce856f5a862a291a05d148828208e1f4ed46b Mon Sep 17 00:00:00 2001
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Wed, 22 Jan 2020 18:35:05 -0300
Subject: [PATCH] Add BRIN test case
This test case was sketched in commit message 4c87010981f3 to explain an
ancient bug; it translates to a coverage increase, so add it to the BRIN
regression tests.
---
src/test/regress/expected/brin.out | 19 +++++++++++++++++++
src/test/regress/sql/brin.sql | 10 ++++++++++
2 files changed, 29 insertions(+)
diff --git a/src/test/regress/expected/brin.out b/src/test/regress/expected/brin.out
index ca80f00dc90..0b14c73fc64 100644
--- a/src/test/regress/expected/brin.out
+++ b/src/test/regress/expected/brin.out
@@ -483,6 +483,25 @@ SELECT brin_summarize_range('brin_summarize_idx', -1);
ERROR: block number out of range: -1
SELECT brin_summarize_range('brin_summarize_idx', 4294967296);
ERROR: block number out of range: 4294967296
+-- test value merging in add_value
+CREATE TABLE brintest_2 (n numrange);
+CREATE INDEX brinidx_2 ON brintest_2 USING brin (n);
+INSERT INTO brintest_2 VALUES ('empty');
+INSERT INTO brintest_2 VALUES (numrange(0, 2^1000::numeric));
+INSERT INTO brintest_2 VALUES ('(-1, 0)');
+SELECT brin_desummarize_range('brinidx', 0);
+ brin_desummarize_range
+------------------------
+
+(1 row)
+
+SELECT brin_summarize_range('brinidx', 0);
+ brin_summarize_range
+----------------------
+ 1
+(1 row)
+
+DROP TABLE brintest_2;
-- test brin cost estimates behave sanely based on correlation of values
CREATE TABLE brin_test (a INT, b INT);
INSERT INTO brin_test SELECT x/100,x%100 FROM generate_series(1,10000) x(x);
diff --git a/src/test/regress/sql/brin.sql b/src/test/regress/sql/brin.sql
index 11f8fe9bb32..1289e76ecb9 100644
--- a/src/test/regress/sql/brin.sql
+++ b/src/test/regress/sql/brin.sql
@@ -448,6 +448,16 @@ SELECT brin_summarize_range('brin_summarize_idx', 4294967295);
SELECT brin_summarize_range('brin_summarize_idx', -1);
SELECT brin_summarize_range('brin_summarize_idx', 4294967296);
+-- test value merging in add_value
+CREATE TABLE brintest_2 (n numrange);
+CREATE INDEX brinidx_2 ON brintest_2 USING brin (n);
+INSERT INTO brintest_2 VALUES ('empty');
+INSERT INTO brintest_2 VALUES (numrange(0, 2^1000::numeric));
+INSERT INTO brintest_2 VALUES ('(-1, 0)');
+
+SELECT brin_desummarize_range('brinidx', 0);
+SELECT brin_summarize_range('brinidx', 0);
+DROP TABLE brintest_2;
-- test brin cost estimates behave sanely based on correlation of values
CREATE TABLE brin_test (a INT, b INT);
--
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