LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html - Issue 1209183004: Expose scroll customization for touch to JS (behind REF).

Unified Diff: LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html

Issue 1209183004: Expose scroll customization for touch to JS (behind REF). (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Address skobes' nits. Created 5 years, 5 months ago

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Index: LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html

diff --git a/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html b/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html

new file mode 100644

index 0000000000000000000000000000000000000000..c1f726fa7c3c5e14001104bc820c4945421c4b9e

--- /dev/null

+++ b/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html

@@ -0,0 +1,55 @@

+<!DOCTYPE html>

+<html>

+<head>

+<meta charset="utf-8">

+<title>ScrollState constructor behaves correctly</title>

+<script src="../../../resources/testharness.js"></script>

+<script src="../../../resources/testharnessreport.js"></script>

+</head>

+<body>

+<script>

+test(function() {

+ assert_true('ScrollState' in window, "'ScrollState' in window");

+ // TODO(tdresser): Don't rely on window.internals. See crbug.com/483091 for details.

+ assert_true(window.internals !== null, "'ScrollState' in window");

+}, "These tests only work with scroll customization enabled.");

+var elementCount = 10;

+var remainingNumberOfTimesToBeCalled = elementCount;

+var distributeScroll = function(scrollState) {

+ this.calledOrder = elementCount - remainingNumberOfTimesToBeCalled;

+ remainingNumberOfTimesToBeCalled--;

+ scrollState.distributeToScrollChainDescendant();

+var elements = [];

+for (var i = 0; i < elementCount; ++i) {

+ var element = document.createElement("div");

+ element.creationOrder = i;

+ element.setDistributeScroll(distributeScroll.bind(element), "disable-native-scroll");

+ elements.push(element);

+if ('ScrollState' in window && window.internals) {

+ test(function() {

+ var scrollState = new ScrollState(100, 0, 0, 0, 0, false, false);

+ window.internals.setScrollChain(scrollState, elements);

+ scrollState.distributeToScrollChainDescendant();

+ assert_equals(0, remainingNumberOfTimesToBeCalled);

+ for (var i = 0; i < elementCount; ++i) {

+ assert_equals(elements[i].creationOrder, elements[i].calledOrder);

+ }

+ }, "distributeToScrollChainDescendant propagates correctly.");

+ test(function() {

+ var scrollState = new ScrollState(100, 0, 0, 0, 0, false, false);

+ window.internals.setScrollChain(scrollState, []);

+ assert_equals(0, remainingNumberOfTimesToBeCalled);

+ scrollState.distributeToScrollChainDescendant();

+ assert_equals(0, remainingNumberOfTimesToBeCalled);

+ }, "distributeToScrollChainDescendant with empty scroll chain does nothing.");

+</script>

+</body>

+</html>