Implement the authenticated structured entry viewer

crates/storage/tests/entry_documents.rs

@@ -117,6 +117,19 @@ fn complex_documents_round_trip_with_storage_owned_metadata() -> TestResult {
         document.fields()[4].metadata().sensitivity(),
         EntrySensitivity::Sensitive
     );
+    let otp = document.fields()[4]
+        .metadata()
+        .otp()
+        .expect("validated OTP metadata");
+    assert_eq!(otp.kind(), ironstorage::otp::OtpKind::Totp);
+    assert_eq!(otp.issuer(), Some("Example"));
+    assert_eq!(otp.account(), "alice");
+    assert_eq!(otp.algorithm(), ironstorage::otp::OtpAlgorithm::Sha1);
+    assert_eq!(otp.digits(), 6);
+    assert_eq!(otp.period(), Some(30));
+    assert_eq!(otp.counter(), None);
+    let copied = document.copy_field_value(document.fields()[2].id())?;
+    assert_eq!(copied.expose(), b"one");
     assert!(!format!("{document:?}").contains("pässwörd"));
     assert!(!format!("{:?}", document.fields()[4]).contains("JBSWY3DPEHPK3PXP"));
     Ok(())