Check if input.value="" clears an input with partially-specified value.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


Empty text: --:-- --
PASS eventSender.keyDown("upArrow"); getUserAgentShadowTextContent(input) is not emptyText
PASS input.value = ""; getUserAgentShadowTextContent(input) is emptyText

Initial text: --:--:45 --
Empty value should not clear read-only fields.
PASS input.value = ""; getUserAgentShadowTextContent(input) is "--:--:45 --"
Empty value should clear only editable fields.
PASS eventSender.keyDown("upArrow"); getUserAgentShadowTextContent(input) is "01:--:45 --"
PASS input.value = ""; getUserAgentShadowTextContent(input) is "--:--:45 --"
PASS successfullyParsed is true

TEST COMPLETE