1 files changed, 40 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/CSS2/normal-flow/block-in-inline-insert-020.html b/testing/web-platform/tests/css/CSS2/normal-flow/block-in-inline-insert-020.html
new file mode 100644
index 0000000000..3fbed1b3c0
--- /dev/null
+++ b/testing/web-platform/tests/css/CSS2/normal-flow/block-in-inline-insert-020.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<meta name="assert" content="Test inserting an inline child before an OOF in blocks-in-inline">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#anonymous-block-level">
+<link ref="match" href="block-in-inline-insert-020-ref.html">
+<link rel="author" title="Koji Ishii" href="mailto:kojii@chromium.org">
+<body>
+  <section>
+    <span>
+      <div>1</div>
+      <div class="before" style="position: absolute">3</div>
+      <div>&nbsp;</div>
+    </span>
+  </section>
+  <!-- The OOF was inserted dynamically -->
+  <section>
+    <span>
+      <div>1</div>
+      <div class="beforeoof">&nbsp;</div>
+    </span>
+  </section>
+<script>
+(function () {
+  document.body.offsetTop;
+  for (const before of document.getElementsByClassName('beforeoof')) {
+    const oof = document.createElement('div');
+    oof.classList.add('before')
+    oof.style.position = 'absolute';
+    oof.textContent = '3';
+    before.before(oof);
+  }
+
+  document.body.offsetTop;
+  for (const before of document.getElementsByClassName('before')) {
+    const span = document.createElement('span');
+    span.textContent = '2';
+    before.before(span);
+  }
+})();
+</script>
+</body>