LayoutTests/fast/events/scroll-event-handler-count.html - Issue 237963014: Track scroll event handlers in nested documents

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Side by Side Diff: LayoutTests/fast/events/scroll-event-handler-count.html

Issue 237963014: Track scroll event handlers in nested documents (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: More simplification. Created 6 years, 8 months ago

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1 <div id="scrolltarget">	1 <div id="scrolltarget">

2 <script src="../../resources/js-test.js"></script>	2 <script src="../../resources/js-test.js"></script>

3 <script>	3 <script>

4 description("This test checks that we correctly update the scroll event handler count as event handlers are added and removed");	4 description("This test checks that we correctly update the scroll event handler count as event handlers are added and removed");

5 (function() {	5 (function() {

6 // Test addEventListener/removeEventListener on the document.	6 // Test addEventListener/removeEventListener on the document.

7 var listener = function() { }	7 var listener = function() { }

8	8

9 shouldBe('window.internals.scrollEventHandlerCount(document)', '0');	9 shouldBe('window.internals.scrollEventHandlerCount(document)', '0');

10 document.addEventListener('scroll', listener, true);	10 document.addEventListener('scroll', listener, true);

(...skipping 15 matching lines...) Expand all Loading...
26 // Test setting onscroll on the document.	26 // Test setting onscroll on the document.

27	27

28 shouldBe('window.internals.scrollEventHandlerCount(document)', '0');	28 shouldBe('window.internals.scrollEventHandlerCount(document)', '0');

29 document.onscroll = function() { }	29 document.onscroll = function() { }

30 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');	30 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');

31 document.onscroll = function() { }	31 document.onscroll = function() { }

32 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');	32 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');

33 document.onscroll = null;	33 document.onscroll = null;

34 shouldBe('window.internals.scrollEventHandlerCount(document)', '0');	34 shouldBe('window.internals.scrollEventHandlerCount(document)', '0');

35 })();	35 })();

	36 debug("Test that nested Documents' scroll handlers are properly tracked in their parent Document.");

	37 (function() {

	38 var iframe = document.createElement('iframe');

	39 var scrolltarget = document.getElementById('scrolltarget');

	40 scrolltarget.onscroll = function() {};

	41

	42 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');

	43

	44 scrolltarget.appendChild(iframe);

	45

	46 nestedDocument = iframe.contentWindow.document;

	47 nestedDocument.open('text/html', 'replace');

	48 nestedDocument.write('<!DOCTYPE html>\n<script>\ndocument.onscroll=function( ){};\n</' + 'script>\n');

	49 shouldBe('window.internals.scrollEventHandlerCount(nestedDocument)', '1');

	50 shouldBe('window.internals.scrollEventHandlerCount(document)', '2');

	51

	52 nestedDocument.write('<script>document.onscroll=undefined</' + 'script>\n');

	53 shouldBe('window.internals.scrollEventHandlerCount(nestedDocument)', '0');

	54 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');

	55

	56 nestedDocument.close();

	57

	58 scrolltarget.removeChild(iframe);

	59 shouldBe('window.internals.scrollEventHandlerCount(document)', '1');

	60 })();

36 </script>	61 </script>

37 </body>	62 </body>

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