<!DOCTYPE html> <!-- webkit-test-runner [ useFlexibleViewport=true ] -->
<script>
if (window.internals) {
    internals.settings.setConstantPropertiesEnabled(true);
}
</script>
<head>
    <meta name="viewport" content="initial-scale=1, viewport-fit=cover">
    <style>
        #a {
            position: absolute;
            left: env(safe-area-inset-right);
            top: env(safe-area-inset-top);
            width: 100px;
            height: 100px;
            background-color: green;
        }

        #b {
            position: absolute;
            left: env(safe-area-inset-bottom);
            top: env(safe-area-inset-left);
            width: 100px;
            height: 100px;
            background-color: blue;
        }
    </style>
    <script>
        function getUIScript()
        {
            return `
            (function() {
                uiController.setSafeAreaInsets(50, 25, 75, 100);
                uiController.doAfterVisibleContentRectUpdate(function () {
                    uiController.uiScriptComplete();
                });
            })();`
        }

        if (window.testRunner) {
            testRunner.waitUntilDone();
            window.onload = function () {
                testRunner.runUIScript(getUIScript(), function(result) {
                    testRunner.notifyDone();
                });
            }
        }
    </script>
</head>
<body>
    <div id="a"></div>
    <div id="b"></div>
    <p>The boxes should be at 25, 50 and 75, 100.</p>
</body>

