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Diffstat (limited to '')
| -rw-r--r-- | testing/web-platform/tests/intersection-observer/empty-root-margin.html | 29 |
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> |