1 files changed, 91 insertions, 0 deletions
diff --git a/frontend/src/lib/datasetCardWarnings.test.ts b/frontend/src/lib/datasetCardWarnings.test.ts
new file mode 100644
index 0000000..8e79e84
--- /dev/null
+++ b/frontend/src/lib/datasetCardWarnings.test.ts
@@ -0,0 +1,91 @@
+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();
+  });
+});