<!DOCTYPE html>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
var entriesExpectToReceive = [
    {
        'entryType': 'paint',
        'name': 'first-paint'
    },
    {
        'entryType': 'paint',
        'name': 'first-contentful-paint'
    }
];

setup({"hide_test_state": true});
async_test(function (t) {
    assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");
    window.addEventListener('message', t.step_func(e => {
        // When only child frame paints, expect only first-paint.
        for (let i = 0; i < entriesExpectToReceive.length; i++) {
            if (entriesExpectToReceive[i].entryType == e.data.entryType &&
                entriesExpectToReceive[i].name == e.data.name) {
                entriesExpectToReceive.splice(i, 1);
                break;
            }
        }

        if (entriesExpectToReceive.length == 0) {
            const bufferedEntries = performance.getEntriesByType('paint');
            assert_equals(bufferedEntries.length, 1);
            assert_equals(bufferedEntries[0].entryType, 'paint');
            assert_equals(bufferedEntries[0].name, 'first-paint');
            t.done();
        }
    }));
    const iframe = document.createElement('iframe');
    iframe.id = 'child-iframe';
    iframe.src = '../resources/subframe-painting.html';
    document.body.appendChild(iframe);
}, 'Parent frame ignores paint-timing events fired from child image rendering.');
</script>
</body>
</html>
