From 9e7ffcce59fb7b013149f1036eedcfa0a47c46d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ra=C3=BAl=20Mar=C3=ADn?= <git@rmr.ninja>
Date: Wed, 6 Apr 2022 11:09:08 +0200
Subject: [PATCH] Add test to check DNS profile events

---
 .../02265_test_dns_profile_events.reference     |  2 ++
 .../02265_test_dns_profile_events.sh            | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 tests/queries/0_stateless/02265_test_dns_profile_events.reference
 create mode 100755 tests/queries/0_stateless/02265_test_dns_profile_events.sh

diff --git a/tests/queries/0_stateless/02265_test_dns_profile_events.reference b/tests/queries/0_stateless/02265_test_dns_profile_events.reference
new file mode 100644
index 00000000000..97ca33b311f
--- /dev/null
+++ b/tests/queries/0_stateless/02265_test_dns_profile_events.reference
@@ -0,0 +1,2 @@
+first_check	1
+second_check	1
diff --git a/tests/queries/0_stateless/02265_test_dns_profile_events.sh b/tests/queries/0_stateless/02265_test_dns_profile_events.sh
new file mode 100755
index 00000000000..756a761a0ae
--- /dev/null
+++ b/tests/queries/0_stateless/02265_test_dns_profile_events.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Tags: no-parallel
+
+CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+# shellcheck source=../shell_config.sh
+. "$CUR_DIR"/../shell_config.sh
+
+
+current_dns_errors=$($CLICKHOUSE_CLIENT --query "SELECT sum(value) FROM system.events where event = 'DNSError';")
+${CLICKHOUSE_CLIENT} --query "SELECT * FROM remote('ThisHostNameDoesNotExistSoItShouldFail', system, one)" 2>/dev/null
+${CLICKHOUSE_CLIENT} --query "SELECT 'first_check', sum(value) > ${current_dns_errors} FROM system.events where event = 'DNSError';"
+
+current_dns_errors=$($CLICKHOUSE_CLIENT --query "SELECT sum(value) FROM system.events where event = 'DNSError';")
+${CLICKHOUSE_CLIENT} --query "SELECT * FROM remote('ThisHostNameDoesNotExistSoItShouldFail2', system, one)" 2>/dev/null
+${CLICKHOUSE_CLIENT} --query "SELECT 'second_check', sum(value) > ${current_dns_errors} FROM system.events where event = 'DNSError';"
+
+${CLICKHOUSE_CLIENT} --query "SYSTEM DROP DNS CACHE"