refactor: type the local Leaflet AIS adapter

2026-08-01 12:23:37 +02:00
parent 5ba3ecf59b
commit 968fb3ea2d
6 changed files with 313 additions and 207 deletions
@@ -0,0 +1,58 @@
+// SPDX-FileCopyrightText: 2026 Stan Grams <sjg@haxx.space>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+import test from "node:test";
+import vm from "node:vm";
+
+test("local AIS track-symbol adapter renders immediately on first add", async () => {
+  const listeners = new Map();
+  const map = {
+    getZoom: () => 10,
+    on: (event, listener) => { listeners.set(event, listener); },
+    off: (event) => { listeners.delete(event); },
+  };
+  const markerPrototype = {
+    initialize(_latlng, options) { this.options = options; },
+    onAdd(addedMap) { this._map = addedMap; this._icon = { innerHTML: "", style: {} }; },
+    onRemove() { this._map = null; },
+  };
+  const L = {
+    Marker: {
+      prototype: markerPrototype,
+      extend(definition) {
+        return class TrackSymbol {
+          constructor(latlng, options) {
+            this.options = { ...definition.options };
+            definition.initialize.call(this, latlng, options);
+          }
+        };
+      },
+    },
+    Util: { extend: Object.assign },
+    divIcon: (options) => options,
+  };
+  const source = await readFile(
+    new URL("../../assets/web/generated/leaflet-ais-tracksymbol.js", import.meta.url),
+    "utf8",
+  );
+  new vm.Script(source).runInNewContext({ L, console });
+  Object.assign(L.TrxAisTrackSymbol.prototype, {
+    onAdd: markerPrototype.onAdd,
+    onRemove: markerPrototype.onRemove,
+  });
+  // The fake `extend` above only models construction; copy plugin methods from
+  // a second extend capture so the test exercises the generated adapter.
+  let definition;
+  L.Marker.extend = (value) => { definition = value; return L.TrxAisTrackSymbol; };
+  new vm.Script(source).runInNewContext({ L, console });
+  Object.assign(L.TrxAisTrackSymbol.prototype, definition);
+
+  const symbol = L.trxAisTrackSymbol([52, 21], { heading: 90, speed: 12 });
+  symbol.onAdd(map);
+  assert.match(symbol._icon.innerHTML, /<svg/);
+  assert.match(symbol._icon.innerHTML, /rotate\(90\)/);
+  assert.equal(listeners.has("zoomend"), true);
+});