1 Tests the optional properties of DeviceProximityEvent. Each property should be null if not set, or set to null or undefined.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 event = document.createEvent('DeviceProximityEvent')
7 PASS event.value == Number.POSITIVE_INFINITY is true
8 PASS event.min == Number.NEGATIVE_INFINITY is true
9 PASS event.max == Number.POSITIVE_INFINITY is true
10 PASS successfullyParsed is true