Initial Watermaps import

2026-07-24 11:29:24 +02:00
commit 57f7b4dedb
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+import { describe, expect, it } from "vitest";
+import { haversineDistanceNm, initialBearingDeg, normalizeHeadingDeg } from "../src/index.js";
+
+describe("geo helpers", () => {
+  it("calculates a practical nautical-mile distance", () => {
+    const distance = haversineDistanceNm(
+      { lat: 53.541, lon: 9.966 },
+      { lat: 54.18, lon: 12.09 }
+    );
+
+    expect(distance).toBeGreaterThan(80);
+    expect(distance).toBeLessThan(95);
+  });
+
+  it("normalizes headings and bearings", () => {
+    expect(normalizeHeadingDeg(-10)).toBe(350);
+    expect(normalizeHeadingDeg(370)).toBe(10);
+    expect(initialBearingDeg({ lat: 53.5, lon: 9.9 }, { lat: 54, lon: 10.1 })).toBeGreaterThan(0);
+  });
+});