Test for issue sveltejs#6481

Author: michaelvogt

test/custom-elements/samples/child-slot/main.svelte

@@ -0,0 +1,9 @@
+<svelte:options tag="custom-element"/>
+
+<script>
+	import Screen from './screen.svelte';
+</script>
+
+<Screen>
+	screen1
+</Screen>

test/custom-elements/samples/child-slot/screen.svelte

@@ -0,0 +1,4 @@
+<svelte:options tag="bugslot-screen" />
+
+<p>not slotted</p>
+<slot>default</slot>

test/custom-elements/samples/child-slot/test.js

@@ -0,0 +1,14 @@
+import * as assert from 'assert';
+import './main.svelte';
+import './screen.svelte';
+
+export default function (target) {
+	target.innerHTML = `<custom-element></custom-element>`;
+
+	const [a] = target.querySelectorAll('custom-element');
+
+	assert.htmlEqual(a.shadowRoot.innerHTML, `
+		<p>not slotted</p>
+		<slot>screen1</slot>
+	`);
+}