ui/tests/lib/components/CreateChannelForm.svelte.test.js


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import { render, screen } from '@testing-library/svelte';
import userEvent from '@testing-library/user-event';
import { beforeEach, expect, test, describe, it, vi } from 'vitest';
import CreateChannelForm from '$lib/components/CreateChannelForm.svelte';

const user = userEvent.setup();

const mocks = vi.hoisted(() => ({
  createChannel: vi.fn()
}));

describe('CreateChannelForm', async () => {
  beforeEach(async () => {
    render(CreateChannelForm, {
      createChannel: mocks.createChannel
    });
  });

  describe('creates channels', async () => {
    it('with a non-empty name', async () => {
      const input = screen.getByRole('textbox');
      await user.type(input, 'channel name');

      const create = screen.getByRole('button');
      await user.click(create);

      expect(mocks.createChannel).toHaveBeenCalledExactlyOnceWith('channel name');
    });

    it('with an empty name', async () => {
      const create = screen.getByRole('button');
      await user.click(create);

      expect(mocks.createChannel).toHaveBeenCalledExactlyOnceWith('');
    });
  });
});