Implement iPhone and Apple Watch preferences (#53)

crates/storage/tests/authentication_leases.rs

@@ -249,6 +249,30 @@ fn user_activity_extends_the_lease_but_secret_access_and_timer_polling_do_not()
     Ok(())
 }
 
+#[test]
+fn timeout_updates_apply_to_the_active_lease_and_later_activity() -> TestResult {
+    let fixture = FixtureSet::load()?;
+    let keys = KeyStore::load(fixture.path("keys"))?;
+    let alice = fixture_key(&fixture, &keys, "alice")?;
+    let backend = MemoryBackend::default();
+    provision_passphrase(
+        backend.clone(),
+        &alice,
+        fixture.key("alice")?.passphrase.as_bytes(),
+    )?;
+    let clock = ManualClock::default();
+    let session = session(backend, clock.clone(), 120)?;
+    let handle = session.authenticate(&alice)?;
+
+    clock.advance(Duration::from_secs(20));
+    session.set_timeout(AuthenticationTimeout::new(Duration::from_secs(30))?)?;
+    assert_eq!(handle.remaining_time()?, Duration::from_secs(30));
+    clock.advance(Duration::from_secs(10));
+    handle.touch_user_activity()?;
+    assert_eq!(handle.remaining_time()?, Duration::from_secs(30));
+    Ok(())
+}
+
 #[test]
 fn manual_lock_cancellation_and_expiry_revoke_all_existing_handles() -> TestResult {
     let fixture = FixtureSet::load()?;