test(22-01): add failing test for resolveTicketToCampaign

- Covers no-report, ungrouped, and grouped resolution states
- Asserts parameterized ticket_id lookup query shape

lib/services/phishing-ticket-resolver.test.ts

@@ -0,0 +1,76 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+// Mock postgresClient BEFORE importing the module under test — mirrors
+// campaign-classifier.test.ts's vi.mock() factory-mocking discipline.
+const queryMock = vi.fn();
+vi.mock('./postgres-client', () => ({
+  postgresClient: {
+    query: (...args: unknown[]) => queryMock(...args),
+  },
+}));
+
+// eslint-disable-next-line import/first -- imported after vi.mock hoisting
+import { resolveTicketToCampaign } from './phishing-ticket-resolver';
+
+describe('resolveTicketToCampaign', () => {
+  beforeEach(() => {
+    queryMock.mockReset();
+  });
+
+  it('returns { found: false } when no reports row exists for the ticket id', async () => {
+    queryMock.mockResolvedValue({ rows: [], rowCount: 0 });
+
+    const result = await resolveTicketToCampaign(999);
+
+    expect(result).toEqual({ found: false });
+  });
+
+  it('returns { found: true, campaignId: null } for an ungrouped report', async () => {
+    queryMock.mockResolvedValue({
+      rows: [{ id: 'report-1', campaign_id: null, ticket_number: 'T20260716.0001' }],
+      rowCount: 1,
+    });
+
+    const result = await resolveTicketToCampaign(123);
+
+    expect(result).toEqual({
+      found: true,
+      reportId: 'report-1',
+      campaignId: null,
+      ticketNumber: 'T20260716.0001',
+    });
+  });
+
+  it('returns { found: true, reportId, campaignId, ticketNumber } for a grouped report', async () => {
+    queryMock.mockResolvedValue({
+      rows: [
+        {
+          id: 'report-2',
+          campaign_id: 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee',
+          ticket_number: 'T20260716.0002',
+        },
+      ],
+      rowCount: 1,
+    });
+
+    const result = await resolveTicketToCampaign(456);
+
+    expect(result).toEqual({
+      found: true,
+      reportId: 'report-2',
+      campaignId: 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee',
+      ticketNumber: 'T20260716.0002',
+    });
+  });
+
+  it('queries reports filtered by ticket_id with a parameterized query', async () => {
+    queryMock.mockResolvedValue({ rows: [], rowCount: 0 });
+
+    await resolveTicketToCampaign(1);
+
+    expect(queryMock).toHaveBeenCalledWith(
+      expect.stringContaining('FROM reports WHERE ticket_id = $1'),
+      [1]
+    );
+  });
+});