test(products): add regression tests for GROUP_CONCAT NULL bug and reload path

- 'renders summary table without crash when product has empty colors and locations':
  mocks getProductSummary returning a product with colors/locations='', verifying the
  page does not crash and calls the API (reproduces the previously-broken scenario).

- 'closes dialog after successful product creation (reload branch reached)':
  verifies that a successful form submission calls createProduct and the ModalForm
  closes, confirming onFinish returned true — the same code branch that triggers
  summaryRef.reload().

src/pages/Inventory/Products/index.test.tsx

@@ -1,11 +1,151 @@
-import { describe, vi } from 'vitest';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, waitFor, act, within } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
 
 vi.mock('@umijs/max');
 vi.mock('@/services/api');
 
 import { smokeTest } from '../../../../test/smoke';
 import Page from './index';
+import { createProduct, getProductSummary } from '@/services/api';
 
 describe('Inventory / Products page', () => {
-  smokeTest(Page);
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  smokeTest(Page);
+
+  it('renders 新增产品 toolbar button', async () => {
+    render(<Page />);
+    await act(async () => {
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+    expect(screen.getByRole('button', { name: /新增产品/ })).toBeInTheDocument();
+  });
+
+  it('opens create dialog when 新增产品 is clicked', async () => {
+    const user = userEvent.setup();
+    render(<Page />);
+    await act(async () => {
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+
+    await user.click(screen.getByRole('button', { name: /新增产品/ }));
+
+    await waitFor(() => {
+      expect(screen.getByRole('dialog')).toBeInTheDocument();
+    });
+    expect(within(screen.getByRole('dialog')).getByText('新增产品')).toBeInTheDocument();
+  });
+
+  it('calls createProduct after filling form and submitting', async () => {
+    const user = userEvent.setup();
+    render(<Page />);
+    await act(async () => {
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+
+    await user.click(screen.getByRole('button', { name: /新增产品/ }));
+    await waitFor(() => screen.getByRole('dialog'));
+
+    const dialog = screen.getByRole('dialog');
+    const nameInput = within(dialog).getByRole('textbox', { name: /产品名称/ });
+    await user.type(nameInput, '测试产品');
+
+    // Click the submit/OK button – find the non-close button in the dialog footer
+    const buttons = within(dialog).getAllByRole('button');
+    const submitBtn = buttons.find((b) => {
+      const text = b.textContent?.trim() ?? '';
+      return text && !text.includes('×') && !text.includes('✕') && !/取/.test(text) && !/重/.test(text) && !/Cancel/i.test(text);
+    });
+    if (submitBtn) await user.click(submitBtn);
+
+    await waitFor(() => {
+      expect(vi.mocked(createProduct)).toHaveBeenCalled();
+    });
+  });
+
+  it('renders Excel export button', async () => {
+    render(<Page />);
+    await act(async () => {
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+    expect(screen.getByRole('button', { name: /Excel导出/ })).toBeInTheDocument();
+  });
+
+  // Regression: when a product has no pans the backend returns empty strings for
+  // colors/locations (via COALESCE).  Previously GROUP_CONCAT returned NULL which
+  // crashed the Go scanner and made the entire summary return an error, leaving the
+  // table empty.  This test ensures the frontend handles the fixed response correctly.
+  it('renders summary table without crash when product has empty colors and locations', async () => {
+    vi.mocked(getProductSummary).mockResolvedValueOnce({
+      code: 0,
+      msg: 'ok',
+      data: {
+        list: [
+          {
+            productName: '无盘测试布料',
+            spec: '100cm',
+            colorCount: 1,
+            totalPanCount: 0,
+            totalBoltCount: 0,
+            totalLengthM: '0.00',
+            colors: '',
+            locations: '',
+          },
+        ],
+      },
+    } as any);
+
+    render(<Page />);
+
+    // ProTable header text appears in multiple nodes — presence check is enough
+    await waitFor(() => {
+      expect(screen.getAllByText('产品总览').length).toBeGreaterThan(0);
+    });
+    // getProductSummary was invoked (not short-circuited by an error)
+    await waitFor(() => {
+      expect(vi.mocked(getProductSummary)).toHaveBeenCalled();
+    });
+  });
+
+  // Verifies the success path: createProduct returns code 0 → ModalForm closes.
+  // The dialog closing is the proxy for summaryRef.reload() being reached —
+  // ModalForm only calls onOpenChange(false) when onFinish returns true,
+  // which is the same branch that triggers the summary reload.
+  it('closes dialog after successful product creation (reload branch reached)', async () => {
+    const user = userEvent.setup();
+    render(<Page />);
+    await act(async () => {
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+
+    await user.click(screen.getByRole('button', { name: /新增产品/ }));
+    await waitFor(() => screen.getByRole('dialog'));
+
+    const dialog = screen.getByRole('dialog');
+    const nameInput = within(dialog).getByRole('textbox', { name: /产品名称/ });
+    await user.type(nameInput, '新布料');
+
+    const buttons = within(dialog).getAllByRole('button');
+    const submitBtn = buttons.find((b) => {
+      const text = b.textContent?.trim() ?? '';
+      return text && !text.includes('×') && !text.includes('✕') && !/取/.test(text) && !/重/.test(text) && !/Cancel/i.test(text);
+    });
+    if (submitBtn) await user.click(submitBtn);
+
+    await waitFor(() => {
+      expect(vi.mocked(createProduct)).toHaveBeenCalled();
+    });
+    // ModalForm closes only when onFinish returns true — the same branch that calls reload()
+    await waitFor(() => {
+      expect(screen.queryByRole('dialog')).not.toBeInTheDocument();
+    });
+  });
 });