From b86514aa7e135437beffbe3e1f473f16967dabc4 Mon Sep 17 00:00:00 2001
From: Rob Waller <rdwaller1984@googlemail.com>
Date: Tue, 16 Jun 2020 22:17:00 +0100
Subject: [PATCH] docs: testing filter info (#6313)

---
 docs/testing.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/docs/testing.md b/docs/testing.md
index 67c472b800..6fc76b8c16 100644
--- a/docs/testing.md
+++ b/docs/testing.md
@@ -105,3 +105,13 @@ You can also omit the file name, in which case all tests in the current
 directory (recursively) that match the glob `{*_,*.,}test.{js,mjs,ts,jsx,tsx}`
 will be run. If you pass a directory, all files in the directory that match this
 glob will be run.
+
+Tests can be run individually or in groups using the command line `--filter`
+option.
+
+```shell
+deno test --filter "hello world" tests/
+```
+
+This command will run any test which contains the pattern "hello world" in its
+name stored within the `tests/` directory.