From 6efc1daea52f6a663144e977fa0f6dbbac6a04bf Mon Sep 17 00:00:00 2001
From: Jon Simantov <jsimantov@google.com>
Date: Tue, 10 Oct 2023 16:43:34 -0700
Subject: [PATCH] Add readme note for new param.

---
 firebase-test-lab/README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/firebase-test-lab/README.md b/firebase-test-lab/README.md
index b81cb24..1eb60e8 100644
--- a/firebase-test-lab/README.md
+++ b/firebase-test-lab/README.md
@@ -85,6 +85,8 @@ jobs:
             test_devices: model=redfin,version=30;model=oriole,version=33
     ```
 
+-   `test_device_selection` [default: `all`]: Whether to run the tests on all test_devices (separated by semicolons) or a random selection. Allowed values: [`all`, `random`].
+
 -   `timeout` [default: 600s]: The maximum duration you want your test to run. You can enter an integer to represent the duration in seconds, or an integer and enumeration to represent the duration as a longer unit of time. 
 
 -   `additional_flags`: Additional [gcloud firebase test](https://cloud.google.com/sdk/gcloud/reference/firebase/test) flags and values that may be used. e.g. `--xcode-version=11.3` for XCTest.