From 0cebfc74b6c2a41a5788e28dae3494cfbbe016dc Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Sun, 19 Apr 2020 22:22:03 +0300
Subject: [PATCH] Added a test

---
 .../01249_flush_interactive.reference            | 12 ++++++++++++
 .../0_stateless/01249_flush_interactive.sh       | 16 ++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 tests/queries/0_stateless/01249_flush_interactive.reference
 create mode 100755 tests/queries/0_stateless/01249_flush_interactive.sh

diff --git a/tests/queries/0_stateless/01249_flush_interactive.reference b/tests/queries/0_stateless/01249_flush_interactive.reference
new file mode 100644
index 00000000000..6d6abb2d37f
--- /dev/null
+++ b/tests/queries/0_stateless/01249_flush_interactive.reference
@@ -0,0 +1,12 @@
+0
+1
+2
+3
+4
+---
+0
+1
+2
+3
+4
+---
diff --git a/tests/queries/0_stateless/01249_flush_interactive.sh b/tests/queries/0_stateless/01249_flush_interactive.sh
new file mode 100755
index 00000000000..a489806ceb9
--- /dev/null
+++ b/tests/queries/0_stateless/01249_flush_interactive.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+. $CURDIR/../shell_config.sh
+
+# A question for curious reader:
+# How to break shell pipeline as soon as 5 lines are found in the following command:
+# ./my-program | head -n5
+# When I tried to do it, pipeline was not actively terminated,
+#  unless the my-program will try to output a thousand more lines overflowing pipe buffer and terminating with Broken Pipe.
+# But if my program just output 5 (or slightly more) lines and hang up, the pipeline is not terminated.
+
+timeout 1 ${CLICKHOUSE_LOCAL} --max_execution_time 10 --query "SELECT DISTINCT number % 5 FROM system.numbers" ||:
+echo '---'
+timeout 1 ${CLICKHOUSE_CURL} -sS --no-buffer "${CLICKHOUSE_URL}&max_execution_time=10" --data-binary "SELECT DISTINCT number % 5 FROM system.numbers" ||:
+echo '---'