test: diversifier decryption changes

crates/core/keys/src/address.rs

@@ -333,7 +333,6 @@ impl std::str::FromStr for Address {
             let pk_dzero = ka::Public(pk_dzero_bytes);
 
             let ck_id = fmd::ClueKey([0u8; 32]);
-
             Self::from_components(dzero, pk_dzero, ck_id)
                 .ok_or_else(|| anyhow::anyhow!("could not reconstruct transparent address"))
         } else if s.starts_with(bech32str::compat_address::BECH32_PREFIX) {

crates/core/keys/src/keys/ivk.rs

@@ -224,10 +224,13 @@ mod test {
 
         let actual_address = ivk.payment_address(address_index).0;
 
-        // The diversifiers should match
-        assert_eq!(reconstructed.diversifier(), actual_address.diversifier());
-        // The transmission keys should match
-        assert_eq!(
+        // The diversifiers will not match, as the encryption of the 0 account `AddressIndex`
+        // is not the null ciphertext, so when deriving `actual_address` from the 0 account
+        // `AddressIndex`, we end up with a different diversifier.
+        assert_ne!(reconstructed.diversifier(), actual_address.diversifier());
+        // The transmission keys also will not match, as the null diversifier is not the
+        // same as the diversifier for the 0 account `AddressIndex`.
+        assert_ne!(
             reconstructed.transmission_key(),
             actual_address.transmission_key()
         );