Handle PniChangeNumber

ts/test-node/util/mapObjectWithSpec_test.ts

@@ -0,0 +1,64 @@
+// Copyright 2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { assert } from 'chai';
+
+import { mapObjectWithSpec } from '../../util/mapObjectWithSpec';
+
+describe('mapObjectWithSpec', () => {
+  const increment = (value: number) => value + 1;
+
+  it('maps a single key/value pair', () => {
+    assert.deepStrictEqual(mapObjectWithSpec('a', { a: 1 }, increment), {
+      a: 2,
+    });
+  });
+
+  it('maps a multiple key/value pairs', () => {
+    assert.deepStrictEqual(
+      mapObjectWithSpec(['a', 'b'], { a: 1, b: 2 }, increment),
+      { a: 2, b: 3 }
+    );
+  });
+
+  it('maps a key with a value spec', () => {
+    assert.deepStrictEqual(
+      mapObjectWithSpec(
+        {
+          key: 'a',
+          valueSpec: ['b', 'c'],
+        },
+        { a: { b: 1, c: 2 } },
+        increment
+      ),
+      { a: { b: 2, c: 3 } }
+    );
+  });
+
+  it('maps a map with a value spec', () => {
+    assert.deepStrictEqual(
+      mapObjectWithSpec(
+        {
+          isMap: true,
+          valueSpec: ['b', 'c'],
+        },
+        {
+          key1: { b: 1, c: 2 },
+          key2: { b: 3, c: 4 },
+        },
+        increment
+      ),
+      {
+        key1: { b: 2, c: 3 },
+        key2: { b: 4, c: 5 },
+      }
+    );
+  });
+
+  it('map undefined to undefined', () => {
+    assert.deepStrictEqual(
+      mapObjectWithSpec('a', undefined, increment),
+      undefined
+    );
+  });
+});