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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/web-platform/tests/paint-timing/fcp-only/fcp-bg-image-two-steps.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/paint-timing/fcp-only/fcp-bg-image-two-steps.html')
| -rw-r--r-- | testing/web-platform/tests/paint-timing/fcp-only/fcp-bg-image-two-steps.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/paint-timing/fcp-only/fcp-bg-image-two-steps.html b/testing/web-platform/tests/paint-timing/fcp-only/fcp-bg-image-two-steps.html new file mode 100644 index 0000000000..89b161f859 --- /dev/null +++ b/testing/web-platform/tests/paint-timing/fcp-only/fcp-bg-image-two-steps.html @@ -0,0 +1,44 @@ +<!DOCTYPE html> +<head> +<title>Performance Paint Timing Test: FCP should fire for background image only when visible</title> +<style> + #main { + width: 100px; + height: 100px; + } + + /* contentful and preFCP classes are defined in test_fcp script. */ + #main.preFCP { + visibility: hidden; + } + + #main.contentful, #main.preFCP { + background-image: url(../resources/circles.png); + } + + #main.contentful { + visibility: visible; + } +</style> +</head> +<body> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="../resources/utils.js"></script> +<div id="main"></div> +<script> + // Load the image into memory first to make sure it's decoded. + function load_image() { + const img = document.createElement("img"); + img.src = "../resources/circles.png"; + + return new Promise(resolve => { + img.onload = async () => resolve(); + }); + } + + test_fcp("First contentful paint fires for background image only when visible.", load_image); +</script> +</body> + +</html> |