feat(map): add persisted ghost pin sandbox

2026-07-29 18:29:13 +03:00
parent b91d3b913e
commit 0c3855eac5
10 changed files with 1222 additions and 13 deletions
@@ -0,0 +1,50 @@
+import assert from "node:assert/strict";
+import { after, before, test } from "node:test";
+
+import { createServer } from "vite";
+
+let server;
+let ghostPins;
+
+before(async () => {
+  server = await createServer({
+    appType: "custom",
+    logLevel: "silent",
+    server: { middlewareMode: true },
+  });
+  ghostPins = await server.ssrLoadModule("/src/core/map/ghostPins.ts");
+});
+
+after(async () => {
+  await server?.close();
+});
+
+test("ghost pins are generated inside the requested current-view radius", () => {
+  const samples = [0, 0.25, 0.5, 0.75, 0.1, 0.9];
+  let index = 0;
+  const pins = ghostPins.generateGhostPins({
+    anchor: { longitude: 37.618423, latitude: 55.751244 },
+    count: 3,
+    radiusMeters: 1_000,
+    random: () => samples[index++ % samples.length],
+    timestamp: 42,
+  });
+
+  assert.equal(pins.length, 3);
+  assert.equal(new Set(pins.map((pin) => pin.label)).size, 3);
+  assert.ok(pins.every((pin) => /^\d{6}$/.test(pin.label)));
+  assert.ok(pins.every((pin) => pin.id.startsWith("ghost-16-")));
+  assert.ok(pins.every((pin) => pin.speedMetersPerSecond >= 3));
+});
+
+test("numeric pin names remain unique with a degenerate random source", () => {
+  const pins = ghostPins.generateGhostPins({
+    anchor: { longitude: 37.618423, latitude: 55.751244 },
+    count: 4,
+    radiusMeters: 1_000,
+    random: () => 0,
+    timestamp: 42,
+  });
+
+  assert.equal(new Set(pins.map((pin) => pin.label)).size, 4);
+});