From 6cefc64483d7e0db3560eb32a3118ec40a086ecb Mon Sep 17 00:00:00 2001
From: Ashish Kumar <ashfame@users.noreply.github.com>
Date: Wed, 28 Sep 2022 14:21:34 +0400
Subject: [PATCH 1/3] Add instruction for running unit tests in parallel

---
 docs/development/contributing_guide.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/development/contributing_guide.md b/docs/development/contributing_guide.md
index cb0d727efa63..5c3722516843 100644
--- a/docs/development/contributing_guide.md
+++ b/docs/development/contributing_guide.md
@@ -167,6 +167,12 @@ was broken. They are slower than the linters but will typically catch more error
 poetry run trial tests
 ```
 
+You can run unit tests in parallel by specifying `-jX` argument to `trial` where `X` is the number of parallel runners you want. To use 4 cpu cores, you would run them like:
+
+```sh
+poetry run trial -j4 tests
+```
+
 If you wish to only run *some* unit tests, you may specify
 another module instead of `tests` - or a test class or a method:
 

From 7ca4d037122aa9174d4bbd65d3dc5c041032b70c Mon Sep 17 00:00:00 2001
From: Ashfame <mail@ashfame.com>
Date: Wed, 28 Sep 2022 14:28:37 +0400
Subject: [PATCH 2/3] add changelog file

---
 changelog.d/13928.doc | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog.d/13928.doc

diff --git a/changelog.d/13928.doc b/changelog.d/13928.doc
new file mode 100644
index 000000000000..918755b7d299
--- /dev/null
+++ b/changelog.d/13928.doc
@@ -0,0 +1 @@
+Added instruction to contributing guide for running unit tests in parallel. Contributed by @ashfame.

From 3b494188c6826b6b07c97b3e9e4fdd706ab28b0f Mon Sep 17 00:00:00 2001
From: Brendan Abolivier <github@brendanabolivier.com>
Date: Wed, 28 Sep 2022 12:43:17 +0200
Subject: [PATCH 3/3] Fixup changelog

---
 changelog.d/13928.doc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/changelog.d/13928.doc b/changelog.d/13928.doc
index 918755b7d299..04cd06f19da2 100644
--- a/changelog.d/13928.doc
+++ b/changelog.d/13928.doc
@@ -1 +1 @@
-Added instruction to contributing guide for running unit tests in parallel. Contributed by @ashfame.
+Add instruction to contributing guide for running unit tests in parallel. Contributed by @ashfame.