From 7be4e22c2cce5b7cbb78e7d20cbd4081c1b1fa76 Mon Sep 17 00:00:00 2001
From: Sebastian Wick <sebastian.wick@redhat.com>
Date: Thu, 5 Dec 2024 18:22:10 +0100
Subject: [PATCH] tests: Document XDG_DESKTOP_PORTAL_TEST_APP_ID

---
 tests/README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/README.md b/tests/README.md
index 32cb0f5e4..dfa23a933 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -45,5 +45,9 @@ of them:
 * `XDP_VALIDATE_SOUND`: Path to `x-d-p-validate-sound` executable in the
     build directory
 
+* `XDG_DESKTOP_PORTAL_TEST_APP_ID`: If set, the portal will use a host
+    XdpAppInfo with the app id set to the variable. This is used to get a
+    predictable app id for tests.
+
 * `XDG_DESKTOP_PORTAL_TEST_USB_QUERIES`: The USB queries for the USB device
     portal testing.