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diff --git a/tests/test-video-audio-recording--start-race.el b/tests/test-video-audio-recording--start-race.el
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+;;; test-video-audio-recording--start-race.el --- start-race fix tests -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Tests for the wf-recorder start-race fix: the poll that waits for a dying
+;; wf-recorder to release the compositor capture before launching a new one, and
+;; the fail-fast timing predicate that tells a 0.5s failed start from a real
+;; recording.  The pgrep wrapper and the live start/stop wiring are exercised in
+;; the daemon, not here; the poll is tested with an injected predicate so no real
+;; process is needed.
+
+;;; Code:
+
+(require 'ert)
+
+;; Stub dependencies before loading the module.
+(defvar cj/custom-keymap (make-sparse-keymap)
+  "Stub keymap for testing.")
+
+(require 'video-audio-recording)
+
+(declare-function cj/recording--start-failed-p "video-audio-recording-capture" (elapsed threshold))
+(declare-function cj/recording--wait-for-no-wf-recorder "video-audio-recording-capture" (timeout-secs &optional running-p))
+
+;;; ------------------------- cj/recording--start-failed-p ---------------------
+
+(ert-deftest test-recording-start-failed-p-short-exit-is-failure ()
+  "Normal: an exit well before the threshold is a failed start."
+  (should (cj/recording--start-failed-p 0.5 1.5)))
+
+(ert-deftest test-recording-start-failed-p-long-run-is-not-failure ()
+  "Normal: a long-running recording that ends is not a failed start."
+  (should-not (cj/recording--start-failed-p 30.0 1.5)))
+
+(ert-deftest test-recording-start-failed-p-at-threshold-is-not-failure ()
+  "Boundary: an exit exactly at the threshold is not counted as failed."
+  (should-not (cj/recording--start-failed-p 1.5 1.5)))
+
+;;; -------------------- cj/recording--wait-for-no-wf-recorder ------------------
+
+(ert-deftest test-recording-wait-for-no-wf-recorder-clears ()
+  "Normal: returns t once the injected predicate reports wf-recorder gone."
+  (let ((n 0))
+    (should (cj/recording--wait-for-no-wf-recorder
+             2.0
+             (lambda () (setq n (1+ n)) (< n 3))))))
+
+(ert-deftest test-recording-wait-for-no-wf-recorder-already-clear ()
+  "Boundary: an already-clear predicate returns t immediately."
+  (should (cj/recording--wait-for-no-wf-recorder 2.0 (lambda () nil))))
+
+(ert-deftest test-recording-wait-for-no-wf-recorder-times-out ()
+  "Error: a predicate that never clears returns nil at the timeout."
+  (should-not (cj/recording--wait-for-no-wf-recorder 0.15 (lambda () t))))
+
+(provide 'test-video-audio-recording--start-race)
+;;; test-video-audio-recording--start-race.el ends here