test: cover select scoped class regression

packages/svelte/src/internal/server/renderer.test.ts

@@ -207,6 +207,27 @@ test('selects an option with an implicit value', () => {
 	);
 });
 
+test('select merges scoped css hash with static class', () => {
+	const component = (renderer: Renderer) => {
+		renderer.select(
+			{ class: 'foo', value: 'foo' },
+			'svelte-hash',
+			undefined,
+			undefined,
+			undefined,
+			(renderer) => {
+				renderer.option({ value: 'foo' }, (renderer) => renderer.push('foo'));
+			}
+		);
+	};
+
+	const { head, body } = Renderer.render(component as unknown as Component);
+	expect(head).toBe('');
+	expect(body).toBe(
+		'<!--[--><select class="foo svelte-hash"><option value="foo" selected>foo</option></select><!--]-->'
+	);
+});
+
 describe('async', () => {
 	beforeAll(() => {
 		enable_async_mode_flag();

packages/svelte/tests/server-side-rendering/samples/select-value-scoped-class/_expected.html

@@ -0,0 +1 @@
+<select class="foo svelte-18avu97"><option value="foo" selected>foo</option></select>

packages/svelte/tests/server-side-rendering/samples/select-value-scoped-class/main.svelte

@@ -0,0 +1,9 @@
+<select class="foo" value="foo">
+	<option value="foo">foo</option>
+</select>
+
+<style>
+	select {
+		color: red;
+	}
+</style>