add test

Author: trueadm

packages/svelte/tests/runtime-runes/samples/snippet-ref/_config.js

@@ -0,0 +1,8 @@
+import { test } from '../../test';
+
+export default test({
+	compileOptions: {
+		dev: true // Render in dev mode to check that the validation error is not thrown
+	},
+	html: `<form></form>\nundefined`
+});

packages/svelte/tests/runtime-runes/samples/snippet-ref/main.svelte

@@ -0,0 +1,11 @@
+<script>
+	let thisBug;
+</script>
+
+<form bind:this={thisBug}>
+	{#snippet Bug()}
+		cool
+	{/snippet}
+</form>
+
+{typeof thisBug}