Keep iPhone TOTP cache across installs (#78)

crates/storage/tests/mobile_totp.rs

@@ -306,6 +306,47 @@ fn totp_cache_reuses_ciphertext_hashes_and_removes_deleted_entries() -> TestResu
     Ok(())
 }
 
+#[test]
+fn totp_cache_survives_application_container_relocation() -> TestResult {
+    let fixture = FixtureSet::load()?;
+    let application = tempfile::tempdir()?;
+    let installed = application.path().join("installed");
+    fs::create_dir(&installed)?;
+    let vault = installed.join("vault");
+    fs::rename(fixture.materialize_store("basic")?.keep(), &vault)?;
+    let cache = installed.join("totp-catalog.toml");
+    let keys = KeyStore::load(fixture.path("keys"))?;
+    let expected = {
+        let repository = Repository::open(&vault)?;
+        let service = MobileTotpService::new(&repository, &keys);
+        let operation = MobileTotpOperation::default();
+        let mut secrets = CountingSecrets::all(&fixture);
+        service.discover(&BTreeSet::new(), &mut secrets, &cache, &operation)?
+    };
+
+    let updated = application.path().join("updated");
+    fs::rename(&installed, &updated)?;
+    let repository = Repository::open(updated.join("vault"))?;
+    let service = MobileTotpService::new(&repository, &keys);
+    let relocated_cache = updated.join("totp-catalog.toml");
+    assert_eq!(
+        service
+            .cached_page(&BTreeSet::new(), &relocated_cache)
+            .expect("relocated cache remains valid")
+            .rows(),
+        expected.rows()
+    );
+    let operation = MobileTotpOperation::default();
+    let mut secrets = CountingSecrets::all(&fixture);
+    service.discover(&BTreeSet::new(), &mut secrets, &relocated_cache, &operation)?;
+    assert_eq!(secrets.requests, 0);
+    assert_eq!(
+        operation.progress().cache_hits(),
+        operation.progress().total()
+    );
+    Ok(())
+}
+
 #[test]
 fn decrypted_entry_details_reconcile_totp_cache_without_persisting_secrets() -> TestResult {
     let fixture = FixtureSet::load()?;