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Unified Diff: third_party/WebKit/LayoutTests/intersection-observer/iframe-root.html

Issue 1449623002: IntersectionObserver: second cut. (Closed) Base URL: https://chromium.googlesource.com/chromium/src@master
Patch Set: clean up teardown logic Created 4 years, 11 months ago
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Index: third_party/WebKit/LayoutTests/intersection-observer/iframe-root.html
diff --git a/third_party/WebKit/LayoutTests/intersection-observer/iframe-root.html b/third_party/WebKit/LayoutTests/intersection-observer/iframe-root.html
new file mode 100644
index 0000000000000000000000000000000000000000..de889a579138f68b06f8320d65c54898a74841e7
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/intersection-observer/iframe-root.html
@@ -0,0 +1,107 @@
+<!DOCTYPE html>
+<script src="../resources/js-test.js"></script>
+<script src="helper-functions.js"></script>
+<div style="width:100%; height:700px;"></div>
+<div id="root" style="display: inline-block; overflow-y: scroll; height: 200px;">
+ <div id="target" style="width:100px; height:300px"></div>
+ <iframe id="target-iframe" src="../resources/intersection-observer-subframe.html" style="width: 300px; height: 100px; overflow-y: scroll"></iframe>
+</div>
+<div style="width:100%; height:700px;"></div>
+
+<script>
+description("Simple intersection observer test with no explicit root and target in an iframe.");
+var entries = [];
+var root = document.getElementById("root");
+var targetIframe = document.getElementById("target-iframe");
+
+targetIframe.onload = function() {
+ var target = targetIframe.contentDocument.getElementById("target");
+ var iframeScroller = targetIframe.contentDocument.scrollingElement;
+
+ observer_callback = function(changes) {
+ for (var i in changes)
+ entries.push(changes[i]);
+ };
+ var observer = new IntersectionObserver(observer_callback, {"root": document.getElementById("root")});
+ observer.observe(target);
+
+ // TODO(szager): It shouldn't be necessary to RAF after the call to observer()
+ // and before changing the scroll position, but it is.
+
+ function step0() {
+ setTimeout(function() {
+ shouldBeEqualToNumber("entries.length", 0);
+ document.scrollingElement.scrollTop = 250;
+ requestAnimationFrame(step1);
+ });
+ }
+
+ function step1() {
+ setTimeout(function() {
+ shouldBeEqualToNumber("entries.length", 0);
+ iframeScroller.scrollTop = 200;
+ requestAnimationFrame(step2);
+ });
+ }
+
+ function step2() {
+ setTimeout(function() {
+ shouldBeEqualToNumber("entries.length", 0);
+ root.scrollTop = 175;
+ requestAnimationFrame(step3);
+ });
+ }
+
+ function step3() {
+ setTimeout(function() {
+ shouldBeEqualToNumber("entries.length", 1);
+ shouldBeEqualToNumber("entries[0].boundingClientRect.left", 18);
+ shouldBeEqualToNumber("entries[0].boundingClientRect.right", 118);
+ shouldBeEqualToNumber("entries[0].boundingClientRect.top", 593);
+ shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 693);
+ shouldBeEqualToNumber("entries[0].intersectionRect.left", 18);
+ shouldBeEqualToNumber("entries[0].intersectionRect.right", 118);
+ shouldBeEqualToNumber("entries[0].intersectionRect.top", 593);
+ shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 658);
+ shouldBeEqualToNumber("entries[0].rootBounds.left", 8);
+ shouldBeEqualToNumber("entries[0].rootBounds.right", 312);
+ shouldBeEqualToNumber("entries[0].rootBounds.top", 458);
+ shouldBeEqualToNumber("entries[0].rootBounds.bottom", 658);
+ shouldEvaluateToSameObject("entries[0].target", target);
+ document.scrollingElement.scrollTop = 100;
+ requestAnimationFrame(step4);
+ });
+ }
+
+ function step4() {
+ setTimeout(function() {
+ shouldBeEqualToNumber("entries.length", 1);
+ root.scrollTop = 100;
+ requestAnimationFrame(step5);
+ });
+ }
+
+ function step5() {
+ setTimeout(function() {
+ shouldBeEqualToNumber("entries.length", 2);
+ shouldBeEqualToNumber("entries[1].boundingClientRect.left", 18);
+ shouldBeEqualToNumber("entries[1].boundingClientRect.right", 118);
+ shouldBeEqualToNumber("entries[1].boundingClientRect.top", 818);
+ shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 918);
+ shouldBeEqualToNumber("entries[1].intersectionRect.left", 0);
+ shouldBeEqualToNumber("entries[1].intersectionRect.right", 0);
+ shouldBeEqualToNumber("entries[1].intersectionRect.top", 0);
+ shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0);
+ shouldBeEqualToNumber("entries[1].rootBounds.left", 8);
+ shouldBeEqualToNumber("entries[1].rootBounds.right", 312);
+ shouldBeEqualToNumber("entries[1].rootBounds.top", 608);
+ shouldBeEqualToNumber("entries[1].rootBounds.bottom", 808);
+ shouldEvaluateToSameObject("entries[1].target", target);
+ finishTest();
+ document.scrollingElement.scrollTop = 0;
+ });
+ }
+
+ requestAnimationFrame(step0);
+}
+</script>
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