Add Node utilities and tests

2025-06-15 00:00:56 +02:00
parent 14a8b553a4
commit 3c2d04d7b4
3 changed files with 220 additions and 0 deletions
@@ -0,0 +1,35 @@
+const assert = require('node:assert');
+const { parseCobiets, formatCobieTimestamp, toCobiets, fromCobiets, getTAIOffsetAt } = require('..');
+
+const test = require('node:test');
+
+test('parseCobiets basic values', () => {
+  assert.strictEqual(parseCobiets('0.0000'), 0);
+  assert.strictEqual(parseCobiets('1.0000'), 0x10000);
+  assert.strictEqual(parseCobiets('-1.0000'), -0x10000);
+  assert.strictEqual(parseCobiets('0.0001'), 1);
+});
+
+test('formatCobieTimestamp round trip', () => {
+  const str = '+1.0001';
+  const parsed = parseCobiets(str);
+  assert.strictEqual(formatCobieTimestamp(parsed), str);
+});
+
+test('getTAIOffsetAt known dates', () => {
+  assert.strictEqual(getTAIOffsetAt(new Date('1972-01-01T00:00:00Z')), 10);
+  assert.strictEqual(getTAIOffsetAt(new Date('1973-01-01T00:00:00Z')), 12);
+  assert.strictEqual(getTAIOffsetAt(new Date('2017-01-01T00:00:00Z')), 37);
+});
+
+test('toCobiets/fromCobiets round trip', () => {
+  const dates = [
+    new Date('1970-01-01T00:00:00Z'),
+    new Date('2017-01-01T00:00:00Z')
+  ];
+  for (const d of dates) {
+    const cob = toCobiets(d);
+    const back = fromCobiets(cob);
+    assert.strictEqual(back.toISOString(), d.toISOString());
+  }
+});