diff --git a/packages/svelte/tests/runtime-runes/samples/async-attachment/Inner.svelte b/packages/svelte/tests/runtime-runes/samples/async-attachment/Inner.svelte
new file mode 100644
index 0000000000..b9b9d7a3d0
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-attachment/Inner.svelte
@@ -0,0 +1,10 @@
+<script>
+	function renderContent(node) {
+		node.textContent = 'foo';
+	}
+ 
+	const test = await Promise.resolve('foo');
+</script>
+
+<p>{test}</p>
+<div {@attach renderContent}></div>
diff --git a/packages/svelte/tests/runtime-runes/samples/async-attachment/_config.js b/packages/svelte/tests/runtime-runes/samples/async-attachment/_config.js
new file mode 100644
index 0000000000..3a47111726
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-attachment/_config.js
@@ -0,0 +1,9 @@
+import { tick } from 'svelte';
+import { test } from '../../test';
+
+export default test({
+	async test({ assert, target }) {
+		await tick();
+		assert.htmlEqual(target.innerHTML, '<p>foo</p><div>foo</div>');
+	}
+});
diff --git a/packages/svelte/tests/runtime-runes/samples/async-attachment/main.svelte b/packages/svelte/tests/runtime-runes/samples/async-attachment/main.svelte
new file mode 100644
index 0000000000..7592e0e28b
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-attachment/main.svelte
@@ -0,0 +1,11 @@
+<script>
+	import Inner from './Inner.svelte';
+</script>
+
+<svelte:boundary>
+	<Inner />
+
+	{#snippet pending()}
+		<p>pending</p>
+	{/snippet}
+</svelte:boundary>
\ No newline at end of file