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>