Avatar defaults and colors

ts/test-both/util/getAvatarData_test.ts

@@ -0,0 +1,35 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { assert } from 'chai';
+import { v4 as uuid } from 'uuid';
+import { getRandomColor } from '../helpers/getRandomColor';
+
+import { getAvatarData } from '../../util/getAvatarData';
+
+describe('getAvatarData', () => {
+  it('returns existing avatars if present', () => {
+    const avatars = [
+      {
+        id: uuid(),
+        color: getRandomColor(),
+        text: 'Avatar A',
+      },
+      {
+        id: uuid(),
+        color: getRandomColor(),
+        text: 'Avatar B',
+      },
+    ];
+
+    assert.strictEqual(getAvatarData({ avatars, type: 'private' }), avatars);
+    assert.strictEqual(getAvatarData({ avatars, type: 'group' }), avatars);
+  });
+
+  it('returns a non-empty array if no avatars are provided', () => {
+    assert.isNotEmpty(getAvatarData({ type: 'private' }));
+    assert.isNotEmpty(getAvatarData({ type: 'group' }));
+    assert.isNotEmpty(getAvatarData({ avatars: [], type: 'private' }));
+    assert.isNotEmpty(getAvatarData({ avatars: [], type: 'group' }));
+  });
+});