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

describe('KpiCard', () => {
  it('renders label', () => {
    render(<KpiCard label="Tổng giao dịch" value="1.234" />);
    expect(screen.getByText('Tổng giao dịch')).toBeInTheDocument();
  });

  it('renders value', () => {
    render(<KpiCard label="Label" value="9.8 tỷ" />);
    expect(screen.getByText('9.8 tỷ')).toBeInTheDocument();
  });

  it('renders delta when provided', () => {
    render(<KpiCard label="L" value="V" delta={3.5} />);
    expect(screen.getByText('+3.50%')).toBeInTheDocument();
  });

  it('renders footnote when provided', () => {
    render(<KpiCard label="L" value="V" footnote="So với tháng trước" />);
    expect(screen.getByText('So với tháng trước')).toBeInTheDocument();
  });

  it('renders icon when provided', () => {
    render(<KpiCard label="L" value="V" icon={<span data-testid="icon">★</span>} />);
    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(screen.queryByText('L')).not.toBeInTheDocument();
  });

  it('does not render delta when not provided', () => {
    render(<KpiCard label="L" value="V" />);
    expect(screen.queryByText(/%/)).not.toBeInTheDocument();
  });
});