Index: LayoutTests/imported/w3c/web-platform-tests/intersection-observer/isIntersecting-change-events.html |
diff --git a/LayoutTests/imported/w3c/web-platform-tests/intersection-observer/isIntersecting-change-events.html b/LayoutTests/imported/w3c/web-platform-tests/intersection-observer/isIntersecting-change-events.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f9362c3024c2003ac03c1e789c54486830710c92 |
--- /dev/null |
+++ b/LayoutTests/imported/w3c/web-platform-tests/intersection-observer/isIntersecting-change-events.html |
@@ -0,0 +1,112 @@ |
+<!DOCTYPE html> |
+<script src="/resources/testharness.js"></script> |
+<script src="/resources/testharnessreport.js"></script> |
+<script src="./resources/intersection-observer-test-utils.js"></script> |
+ |
+<style> |
+pre, #log { |
+ position: absolute; |
+ top: 0; |
+ left: 200px; |
+} |
+#root { |
+ position: absolute; |
+ top: 0; |
+ left: 0; |
+ width: 150px; |
+ height: 200px; |
+ overflow-y: scroll; |
+} |
+#target1, #target2, #target3, #target4 { |
+ width: 100px; |
+ height: 100px; |
+} |
+#target1 { |
+ background-color: green; |
+} |
+#target2 { |
+ background-color: red; |
+} |
+#target3 { |
+ background-color: blue; |
+} |
+#target4 { |
+ background-color: yellow; |
+} |
+</style> |
+ |
+<div id="root"> |
+ <div id="target1"></div> |
+ <div id="target2"></div> |
+ <div id="target3"></div> |
+</div> |
+ |
+<script> |
+var entries = []; |
+var observer; |
+ |
+runTestCycle(function() { |
+ var root = document.getElementById('root'); |
+ var target1 = document.getElementById('target1'); |
+ var target2 = document.getElementById('target2'); |
+ var target3 = document.getElementById('target3'); |
+ assert_true(!!root, "root element exists."); |
+ assert_true(!!target1, "target1 element exists."); |
+ assert_true(!!target2, "target2 element exists."); |
+ assert_true(!!target3, "target3 element exists."); |
+ observer = new IntersectionObserver(function(changes) { |
+ entries = entries.concat(changes); |
+ }, { root: root }); |
+ observer.observe(target1); |
+ observer.observe(target2); |
+ observer.observe(target3); |
+ entries = entries.concat(observer.takeRecords()); |
+ assert_equals(entries.length, 0, "No initial notifications."); |
+ runTestCycle(step0, "Rects in initial notifications should report initial positions."); |
+}, "isIntersecting changes should trigger notifications."); |
+ |
+function step0() { |
+ assert_equals(entries.length, 3, "Has 3 initial notifications."); |
+ checkRect(entries[0].boundingClientRect, [0, 100, 0, 100], "Check 1st entry rect"); |
+ assert_equals(entries[0].target.id, 'target1', "Check 1st entry target id."); |
+ checkIsIntersecting(entries, 0, true); |
+ checkRect(entries[1].boundingClientRect, [0, 100, 100, 200], "Check 2nd entry rect"); |
+ assert_equals(entries[1].target.id, 'target2', "Check 2nd entry target id."); |
+ checkIsIntersecting(entries, 1, true); |
+ checkRect(entries[2].boundingClientRect, [0, 100, 200, 300], "Check 3rd entry rect"); |
+ assert_equals(entries[2].target.id, 'target3', "Check 3rd entry target id."); |
+ checkIsIntersecting(entries, 2, true); |
+ runTestCycle(step1, "Set scrollTop=100 and check for no new notifications."); |
+ root.scrollTop = 100; |
+} |
+ |
+function step1() { |
+ assert_equals(entries.length, 3, "Has 3 total notifications because isIntersecting did not change."); |
+ runTestCycle(step2, "Add 4th target."); |
+ root.scrollTop = 0; |
+ var target4 = document.createElement('div'); |
+ target4.setAttribute('id', 'target4'); |
+ root.appendChild(target4); |
+ observer.observe(target4); |
+} |
+ |
+function step2() { |
+ assert_equals(entries.length, 4, "Has 3 total notifications because 4th element was added."); |
+ checkRect(entries[3].boundingClientRect, [0, 100, 300, 400], "Check 4th entry rect"); |
+ assert_equals(entries[3].target.id, 'target4', "Check 4th entry target id."); |
+ checkIsIntersecting(entries, 3, false); |
+ assert_equals(entries[3].intersectionRatio, 0, 'target4 initially has intersectionRatio of 0.'); |
+ runTestCycle(step3, "Set scrollTop=100 and check for one new notification."); |
+ root.scrollTop = 100; |
+} |
+ |
+function step3() { |
+ assert_equals(entries.length, 5, "Has 5 total notifications."); |
+ checkRect(entries[4].boundingClientRect, [0, 100, 200, 300], "Check 5th entry rect"); |
+ assert_equals(entries[4].target.id, 'target4', "Check 5th entry target id."); |
+ checkIsIntersecting(entries, 4, true); |
+ assert_equals(entries[4].intersectionRatio, 0, 'target4 still has intersectionRatio of 0.'); |
+ root.scrollTop = 0; // reset to make it easier to refresh and run the test |
+} |
+ |
+</script> |