LayoutTests/fast/css/DOMRect-serialization.html

<!DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test-pre.js"></script>
<script>
description("Test that DOMRect has a serializer");

var rect = document.body.getBoundingClientRect();
shouldBe("rect.__proto__", "DOMRect.prototype");
var toJSONDescriptor = Object.getOwnPropertyDescriptor(rect.__proto__.__proto__, "toJSON");
shouldBeType("toJSONDescriptor.value", "Function");
shouldBeTrue("toJSONDescriptor.enumerable");
shouldBeTrue("toJSONDescriptor.configurable");
shouldBeTrue("toJSONDescriptor.writable");

shouldNotThrow("jsonObject = rect.toJSON()");
shouldBe("jsonObject.top", "rect.top");
shouldBe("jsonObject.right", "rect.right");
shouldBe("jsonObject.bottom", "rect.bottom");
shouldBe("jsonObject.left", "rect.left");
shouldBe("jsonObject.width", "rect.width");
shouldBe("jsonObject.height", "rect.height");

shouldNotThrow("parsedJSONObject = JSON.parse(JSON.stringify(rect))");
shouldBe("parsedJSONObject.top", "rect.top");
shouldBe("parsedJSONObject.right", "rect.right");
shouldBe("parsedJSONObject.bottom", "rect.bottom");
shouldBe("parsedJSONObject.left", "rect.left");
shouldBe("parsedJSONObject.width", "rect.width");
shouldBe("parsedJSONObject.height", "rect.height");
</script>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>