make kestrel a tak server, so that it can send and receive pois as cots data

test/unit/cotServer.spec.js

@@ -0,0 +1,47 @@
+/**
+ * Tests that the CoT parse-and-store path behaves as when a fake ATAK client sends TAK stream frames.
+ * Uses the same framing and payload parsing the server uses; does not start a real TCP server.
+ */
+import { describe, it, expect, beforeEach } from 'vitest'
+import { buildTakFrame, buildPositionCotXml } from '../helpers/fakeAtakClient.js'
+import { parseTakStreamFrame, parseCotPayload } from '../../server/utils/cotParser.js'
+import { updateFromCot, getActiveEntities, clearCotStore } from '../../server/utils/cotStore.js'
+
+describe('cotServer (parse-and-store path)', () => {
+  beforeEach(() => {
+    clearCotStore()
+  })
+
+  it('stores entity when receiving TAK stream frame with position CoT XML', async () => {
+    const xml = buildPositionCotXml({ uid: 'device-1', lat: 37.7, lon: -122.4, callsign: 'Bravo' })
+    const frame = buildTakFrame(xml)
+    const parsedFrame = parseTakStreamFrame(frame)
+    expect(parsedFrame).not.toBeNull()
+    const parsed = parseCotPayload(parsedFrame.payload)
+    expect(parsed).not.toBeNull()
+    expect(parsed.type).toBe('cot')
+    await updateFromCot(parsed)
+    const active = await getActiveEntities()
+    expect(active).toHaveLength(1)
+    expect(active[0].id).toBe('device-1')
+    expect(active[0].lat).toBe(37.7)
+    expect(active[0].lng).toBe(-122.4)
+    expect(active[0].label).toBe('Bravo')
+  })
+
+  it('updates same uid on multiple messages', async () => {
+    const xml1 = buildPositionCotXml({ uid: 'u1', lat: 1, lon: 2 })
+    const xml2 = buildPositionCotXml({ uid: 'u1', lat: 3, lon: 4, callsign: 'Updated' })
+    const frame1 = buildTakFrame(xml1)
+    const frame2 = buildTakFrame(xml2)
+    const p1 = parseCotPayload(parseTakStreamFrame(frame1).payload)
+    const p2 = parseCotPayload(parseTakStreamFrame(frame2).payload)
+    await updateFromCot(p1)
+    await updateFromCot(p2)
+    const active = await getActiveEntities()
+    expect(active).toHaveLength(1)
+    expect(active[0].lat).toBe(3)
+    expect(active[0].lng).toBe(4)
+    expect(active[0].label).toBe('Updated')
+  })
+})