Improve experience for contacts without signal accounts

ts/test-both/util/isConversationSMSOnly_test.ts

@@ -0,0 +1,47 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { assert } from 'chai';
+
+import { isConversationSMSOnly } from '../../util/isConversationSMSOnly';
+
+describe('isConversationSMSOnly', () => {
+  it('returns false if passed an undefined discoveredUnregisteredAt', () => {
+    assert.isFalse(isConversationSMSOnly({}));
+    assert.isFalse(
+      isConversationSMSOnly({ discoveredUnregisteredAt: undefined })
+    );
+  });
+
+  ['direct', 'private'].forEach(type => {
+    it(`returns true if passed a time fewer than 6 hours ago and is ${type}`, () => {
+      assert.isTrue(
+        isConversationSMSOnly({
+          type,
+          e164: 'e164',
+          uuid: 'uuid',
+          discoveredUnregisteredAt: Date.now(),
+        })
+      );
+
+      const fiveHours = 1000 * 60 * 60 * 5;
+      assert.isTrue(
+        isConversationSMSOnly({
+          type,
+          e164: 'e164',
+          uuid: 'uuid',
+          discoveredUnregisteredAt: Date.now() - fiveHours,
+        })
+      );
+    });
+
+    it(`returns true conversation is ${type} and has no uuid`, () => {
+      assert.isTrue(isConversationSMSOnly({ type, e164: 'e164' }));
+      assert.isFalse(isConversationSMSOnly({ type }));
+    });
+  });
+
+  it('returns false for groups', () => {
+    assert.isFalse(isConversationSMSOnly({ type: 'group' }));
+  });
+});