Add infra test that window.load happens before reftest capture

This adds a WPT infrastructure test to enforce that the harness waits for window.load before capturing reftest images. That allows testing like this: ``` <link rel=match href=green.html> <script> window.onload = () => document.body.append('test'); </script> ``` See [1] for conversation. [1] #43310 Change-Id: I1f3f9836ca880350b294538dd2f2d58689485f7b
web-platform-tests · Nov 27, 2023 · 9f50c3c · 9f50c3c
1 parent e570039
commit 9f50c3c
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/infrastructure/reftest/reftest_window_load.html b/infrastructure/reftest/reftest_window_load.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<title>rel=match waits for window load</title>
+<link rel=match href=green.html>
+<script>
+  window.onload = () => {
+    const s = document.createElement('style');
+    s.innerText = ':root {background-color:green}';
+    document.body.appendChild(s);
+  };
+</script>