From 5d08789602e2147ccb5636ed995d4a675d398943 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Thu, 25 Jun 2020 22:48:12 +0300
Subject: [PATCH] Added a test

---
 .../01344_min_bytes_to_use_mmap_io_index.reference    |  2 ++
 .../01344_min_bytes_to_use_mmap_io_index.sql          | 11 +++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.reference
 create mode 100644 tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.sql

diff --git a/tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.reference b/tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.reference
new file mode 100644
index 00000000000..ac3ce287de5
--- /dev/null
+++ b/tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.reference
@@ -0,0 +1,2 @@
+Hello, world
+2
diff --git a/tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.sql b/tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.sql
new file mode 100644
index 00000000000..67baef7136d
--- /dev/null
+++ b/tests/queries/0_stateless/01344_min_bytes_to_use_mmap_io_index.sql
@@ -0,0 +1,11 @@
+DROP TABLE IF EXISTS test_01344;
+CREATE TABLE test_01344 (x String, INDEX idx (x) TYPE set(10) GRANULARITY 1) ENGINE = MergeTree ORDER BY tuple();
+INSERT INTO test_01344 VALUES ('Hello, world');
+
+SET min_bytes_to_use_mmap_io = 1;
+SELECT * FROM test_01344 WHERE x = 'Hello, world';
+
+SYSTEM FLUSH LOGS;
+SELECT PE.Values FROM system.query_log ARRAY JOIN ProfileEvents AS PE WHERE event_date >= yesterday() AND event_time >= now() - 300 AND query LIKE 'SELECT * FROM test_01344 WHERE x = ''Hello, world''%' AND PE.Names = 'CreatedReadBufferMMap' AND type = 2 ORDER BY event_time DESC LIMIT 1;
+
+DROP TABLE test_01344;