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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/intersection-observer/empty-root-margin.html
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/intersection-observer/empty-root-margin.html')
-rw-r--r--testing/web-platform/tests/intersection-observer/empty-root-margin.html29
1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/intersection-observer/empty-root-margin.html b/testing/web-platform/tests/intersection-observer/empty-root-margin.html
new file mode 100644
index 0000000000..9eaf856e95
--- /dev/null
+++ b/testing/web-platform/tests/intersection-observer/empty-root-margin.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta name="viewport" content="width=device-width,initial-scale=1">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+}
+</style>
+
+<div id="target"></div>
+
+<script>
+var target = document.getElementById("target");
+async_test((t) => {
+ var observer = new IntersectionObserver(t.step_func_done((entries) => {
+ var rootBounds = entries[0].rootBounds;
+ assert_equals(rootBounds.left, 0);
+ assert_equals(rootBounds.right, document.documentElement.clientWidth);
+ assert_equals(rootBounds.top, 0);
+ assert_equals(rootBounds.bottom, document.documentElement.clientHeight);
+ observer.disconnect();
+ }), { rootMargin: "" });
+ observer.observe(document.getElementById("target"));
+}, "An empty rootMargin string is interpreted as a margin of size zero");
+</script>