test: add focused tests for session sharing utilities and API

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/api/sessions.test.ts

@@ -0,0 +1,72 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { sessionsApi } from './sessions'
+import apiClient from './client'
+
+vi.mock('./client', () => ({
+  default: {
+    get: vi.fn(),
+    post: vi.fn(),
+    put: vi.fn(),
+    delete: vi.fn(),
+    patch: vi.fn(),
+  },
+}))
+
+const mockClient = apiClient as unknown as {
+  get: ReturnType<typeof vi.fn>
+  post: ReturnType<typeof vi.fn>
+  delete: ReturnType<typeof vi.fn>
+}
+
+beforeEach(() => {
+  vi.clearAllMocks()
+})
+
+describe('sessionsApi sharing methods', () => {
+  it('createShare hits POST /sessions/{id}/shares with correct payload', async () => {
+    const mockShare = { id: 'share-1', share_token: 'tok-123', visibility: 'public' }
+    mockClient.post.mockResolvedValue({ data: mockShare })
+
+    const payload = { visibility: 'public' as const, share_name: 'My Share' }
+    const result = await sessionsApi.createShare('session-42', payload)
+
+    expect(mockClient.post).toHaveBeenCalledWith('/sessions/session-42/shares', payload)
+    expect(result).toEqual(mockShare)
+  })
+
+  it('listMyShares hits GET /shares/my-shares', async () => {
+    const mockShares = [
+      { id: 'share-1', share_token: 'tok-1' },
+      { id: 'share-2', share_token: 'tok-2' },
+    ]
+    mockClient.get.mockResolvedValue({ data: mockShares })
+
+    const result = await sessionsApi.listMyShares()
+
+    expect(mockClient.get).toHaveBeenCalledWith('/shares/my-shares')
+    expect(result).toEqual(mockShares)
+  })
+
+  it('revokeShare hits DELETE /shares/{id}', async () => {
+    mockClient.delete.mockResolvedValue({})
+
+    await sessionsApi.revokeShare('share-99')
+
+    expect(mockClient.delete).toHaveBeenCalledWith('/shares/share-99')
+  })
+
+  it('getSharedSession hits GET /share/{token}', async () => {
+    const mockView = {
+      session_id: 'sess-1',
+      tree_name: 'DNS Troubleshooting',
+      path_taken: ['root', 'node-1'],
+      decisions: [],
+    }
+    mockClient.get.mockResolvedValue({ data: mockView })
+
+    const result = await sessionsApi.getSharedSession('tok-abc')
+
+    expect(mockClient.get).toHaveBeenCalledWith('/share/tok-abc')
+    expect(result).toEqual(mockView)
+  })
+})