import { render, screen } from '@testing-library/react';
import { describe, expect, it } from 'vitest';
import { KpiCard } from '../kpi-card';

describe('KpiCard', () => {
  it('renders label', () => {
    render(<KpiCard label="Giá TB" value="2.5 tỷ" />);
    expect(screen.getByText('Giá TB')).toBeInTheDocument();
  });

  it('renders value', () => {
    render(<KpiCard label="Label" value="100" />);
    expect(screen.getByText('100')).toBeInTheDocument();
  });

  it('renders footnote', () => {
    render(<KpiCard label="Label" value="100" footnote="Hôm nay" />);
    expect(screen.getByText('Hôm nay')).toBeInTheDocument();
  });

  it('renders PriceDelta when delta provided', () => {
    render(<KpiCard label="Label" value="100" delta={1.5} />);
    expect(screen.getByText('+1.50%')).toBeInTheDocument();
  });

  it('renders icon', () => {
    render(<KpiCard label="L" value="V" icon={<span data-testid="icon" />} />);
    expect(screen.getByTestId('icon')).toBeInTheDocument();
  });

  it('renders loading skeleton when loading=true', () => {
    const { container } = render(<KpiCard label="L" value="V" loading />);
    expect(container.querySelector('[aria-busy]')).toBeInTheDocument();
    expect(container.querySelector('.animate-pulse')).toBeInTheDocument();
  });

  it('does not show value when loading', () => {
    render(<KpiCard label="Label" value="100" loading />);
    expect(screen.queryByText('100')).toBeNull();
  });

  it('merges custom className', () => {
    render(<KpiCard data-testid="kc" label="L" value="V" className="extra" />);
    expect(screen.getByTestId('kc')).toHaveClass('extra');
  });
});