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-rw-r--r--layout/reftests/meta-viewport/dynamic-grow-width.html30
1 files changed, 30 insertions, 0 deletions
diff --git a/layout/reftests/meta-viewport/dynamic-grow-width.html b/layout/reftests/meta-viewport/dynamic-grow-width.html
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index 0000000000..84084c2e52
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+++ b/layout/reftests/meta-viewport/dynamic-grow-width.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta name="viewport" content="width=device-width, minimum-scale=0.5">
+<style>
+html {
+ overflow-x: hidden;
+}
+html, body {
+ margin: 0;
+ width: 100%;
+ height: 100%;
+}
+div {
+ height: 100%;
+ position: absolute;
+}
+</style>
+<div id="green" style="background: green; width: 100%;"></div>
+<div style="background: blue; width: 100%;"></div>
+<script>
+document.addEventListener('MozReftestInvalidate', () => {
+ // Grow width to generate overflow-x:hidden area but the content height is
+ // 100vh so that we don't scale down the contents (bug 1508177).
+ green.style.width = '200%';
+ requestAnimationFrame(() => {
+ document.documentElement.classList.remove('reftest-wait');
+ });
+});
+</script>
+</html>