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Diffstat (limited to '')
-rw-r--r-- | testing/web-platform/tests/paint-timing/fcp-only/fcp-canvas-context.html | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/testing/web-platform/tests/paint-timing/fcp-only/fcp-canvas-context.html b/testing/web-platform/tests/paint-timing/fcp-only/fcp-canvas-context.html new file mode 100644 index 0000000000..726e4516ee --- /dev/null +++ b/testing/web-platform/tests/paint-timing/fcp-only/fcp-canvas-context.html @@ -0,0 +1,24 @@ +<!DOCTYPE html> +<head> +<title>Performance Paint Timing Test: FCP when canvas context is created</title> +</head> +<body> +<script src="../resources/utils.js"></script> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<canvas id="canvas" width="50" height="50"></canvas> +<script> + setup({"hide_test_state": true}); + promise_test(async t => { + assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported."); + await new Promise(r => window.addEventListener('load', r)); + await assertNoFirstContentfulPaint(t); + const canvas = document.getElementById('canvas'); + const context = canvas.getContext('2d'); + context.fillRect(0, 0, 100, 100); + await assertFirstContentfulPaint(t); + }, 'Canvas should count as contentful when context is created'); +</script> +</body> + +</html> |