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path: root/frontend/src/lib/datasetCardWarnings.test.ts
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import { describe, expect, it, vi, beforeEach, afterEach } from 'vitest';
import { render, screen, fireEvent, waitFor, cleanup } from '@testing-library/svelte';

vi.mock('../lib/client', () => {
  const real = vi.importActual<typeof import('../lib/client')>('../lib/client');
  return {
    ...real,
    getDataset: vi.fn(),
    getDatasetPreview: vi.fn(),
    createDataset: vi.fn()
  };
});

import DatasetCard from '../components/DatasetCard.svelte';
import { getDataset, getDatasetPreview } from '../lib/client';
import type { Dataset, DatasetPreview } from '../lib/types';

const readyDs: Dataset = {
  id: 'ds-ready-1',
  name: '国泰自由现金流-20251231-20260917',
  request: {
    instruments: [
      { symbol: '159399', market: 'SZ', asset_type: 'etf', name: '国泰自由现金流ETF', currency: null }
    ],
    start_date: '2025-12-31',
    end_date: '2026-09-17',
    frequency: 'daily',
    adjustment: 'none',
    fields: ['open', 'high', 'low', 'close', 'volume']
  },
  status: 'ready',
  created_at: '2026-09-17T01:00:00Z'
};

const preview: DatasetPreview = {
  columns: ['date', 'open', 'high', 'low', 'close', 'volume'],
  rows: [
    { date: '2026-09-16', open: 1.001, high: 1.001, low: 0.982, close: 0.992, volume: 144526400 }
  ],
  coverage: [
    {
      instrument: '159399',
      market: 'SZ',
      asset_type: 'etf',
      requested_start: '2025-12-31',
      requested_end: '2026-09-17',
      actual_start: '2025-12-31',
      actual_end: '2026-09-16',
      row_count: 173,
      warnings: [
        'sina volume unit is 股 (shares)',
        'provider_fallback: eastmoney attempt failed; served by sina',
        'actual coverage 2025-12-31..2026-09-16 differs from request; gaps kept'
      ]
    }
  ],
  warnings: []
};

beforeEach(() => {
  vi.mocked(getDataset).mockResolvedValue(readyDs);
  vi.mocked(getDatasetPreview).mockReset();
});

afterEach(() => cleanup());

describe('per-instrument provenance warnings must be visible even without the range warning banner (159399 units/provider_fallback disclosure)', () => {
  it('renders 夲-instrument sina volume-unit and provider_fallback warnings even when the common range banner shows 覆盖平稳', async () => {
    vi.mocked(getDatasetPreview).mockResolvedValue(preview);
    render(DatasetCard, { props: { dsId: 'ds-ready-1' } });
    const btn = await screen.findByRole('button', { name: /查看数据覆盖预览/ });
    await fireEvent.click(btn);
    await waitFor(() => {
      expect(screen.getByText(/provider_fallback/)).toBeTruthy();
      expect(screen.getByText(/volume unit is 股/)).toBeTruthy();
      expect(screen.getByText(/differs from request/)).toBeTruthy();
    });
  });

  it('no warnings: shows the plain 覆盖平稳 banner and no warning list', async () => {
    vi.mocked(getDatasetPreview).mockResolvedValue({
      ...preview,
      coverage: [{ ...preview.coverage[0], warnings: [] }]
    });
    render(DatasetCard, { props: { dsId: 'ds-ready-1' } });
    const btn = await screen.findByRole('button', { name: /查看数据覆盖预览/ });
    await fireEvent.click(btn);
    await screen.findByText(/覆盖平稳/);
    expect(screen.queryByText(/provider_fallback/)).toBeNull();
  });
});