feat/e2e-testing (#31)

Reviewed-on: #31
Co-authored-by: Max Richter <max@max-richter.dev>
Co-committed-by: Max Richter <max@max-richter.dev>

packages/ui/src/lib/inputs/InputSelect.svelte.ts

@@ -0,0 +1,27 @@
+import { describe, expect, it } from 'vitest';
+import { render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import InputSelect from './InputSelect.svelte';
+
+describe('InputSelect', () => {
+  it('should render select element', async () => {
+    render(InputSelect, { options: ['a', 'b', 'c'], value: 0 });
+
+    const select = page.getByRole('combobox');
+    await expect.element(select).toBeInTheDocument();
+  });
+
+  it('should render all options', async () => {
+    render(InputSelect, { options: ['apple', 'banana', 'cherry'], value: 0 });
+
+    const select = page.getByRole('combobox');
+    await expect.element(select).toHaveTextContent('applebananacherry');
+  });
+
+  it('should select correct option by index', async () => {
+    render(InputSelect, { options: ['first', 'second', 'third'], value: 1 });
+
+    const select = page.getByRole('combobox');
+    await expect.element(select).toHaveTextContent('second');
+  });
+});