Remove `network_type` calls that are obviated by the blanket impl.

components/zcash_protocol/src/local_consensus.rs

@@ -198,30 +198,25 @@ mod tests {
             z_future: Some(expected_z_future),
         };
 
+        assert_eq!(regtest.coin_type(), constants::regtest::COIN_TYPE);
         assert_eq!(
-            regtest.network_type().coin_type(),
-            constants::regtest::COIN_TYPE
-        );
-        assert_eq!(
-            regtest.network_type().hrp_sapling_extended_spending_key(),
+            regtest.hrp_sapling_extended_spending_key(),
             constants::regtest::HRP_SAPLING_EXTENDED_SPENDING_KEY
         );
         assert_eq!(
-            regtest
-                .network_type()
-                .hrp_sapling_extended_full_viewing_key(),
+            regtest.hrp_sapling_extended_full_viewing_key(),
             constants::regtest::HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY
         );
         assert_eq!(
-            regtest.network_type().hrp_sapling_payment_address(),
+            regtest.hrp_sapling_payment_address(),
             constants::regtest::HRP_SAPLING_PAYMENT_ADDRESS
         );
         assert_eq!(
-            regtest.network_type().b58_pubkey_address_prefix(),
+            regtest.b58_pubkey_address_prefix(),
             constants::regtest::B58_PUBKEY_ADDRESS_PREFIX
         );
         assert_eq!(
-            regtest.network_type().b58_script_address_prefix(),
+            regtest.b58_script_address_prefix(),
             constants::regtest::B58_SCRIPT_ADDRESS_PREFIX
         );
     }

zcash_client_sqlite/src/lib.rs

@@ -1240,9 +1240,7 @@ mod tests {
     use {
         crate::testing::AddressType,
         zcash_client_backend::keys::sapling,
-        zcash_primitives::{
-            consensus::Parameters, transaction::components::amount::NonNegativeAmount,
-        },
+        zcash_primitives::transaction::components::amount::NonNegativeAmount,
     };
 
     #[test]
@@ -1341,11 +1339,7 @@ mod tests {
         // Generate some fake CompactBlocks.
         let seed = [0u8; 32];
         let account = AccountId::ZERO;
-        let extsk = sapling::spending_key(
-            &seed,
-            st.wallet().params.network_type().coin_type(),
-            account,
-        );
+        let extsk = sapling::spending_key(&seed, st.wallet().params.coin_type(), account);
         let dfvk = extsk.to_diversifiable_full_viewing_key();
         let (h1, meta1, _) = st.generate_next_block(
             &dfvk,

zcash_client_sqlite/src/wallet/init.rs

@@ -712,13 +712,11 @@ mod tests {
             )?;
 
             let address = encode_payment_address(
-                wdb.params.network_type().hrp_sapling_payment_address(),
+                wdb.params.hrp_sapling_payment_address(),
                 &extfvk.default_address().1,
             );
             let extfvk = encode_extended_full_viewing_key(
-                wdb.params
-                    .network_type()
-                    .hrp_sapling_extended_full_viewing_key(),
+                wdb.params.hrp_sapling_extended_full_viewing_key(),
                 extfvk,
             );
             wdb.conn.execute(
@@ -739,8 +737,7 @@ mod tests {
 
         let seed = [0xab; 32];
         let account = AccountId::ZERO;
-        let secret_key =
-            sapling::spending_key(&seed, db_data.params.network_type().coin_type(), account);
+        let secret_key = sapling::spending_key(&seed, db_data.params.coin_type(), account);
         let extfvk = secret_key.to_extended_full_viewing_key();
 
         init_0_3_0(&mut db_data, &extfvk, account).unwrap();
@@ -852,13 +849,11 @@ mod tests {
             )?;
 
             let address = encode_payment_address(
-                wdb.params.network_type().hrp_sapling_payment_address(),
+                wdb.params.hrp_sapling_payment_address(),
                 &extfvk.default_address().1,
             );
             let extfvk = encode_extended_full_viewing_key(
-                wdb.params
-                    .network_type()
-                    .hrp_sapling_extended_full_viewing_key(),
+                wdb.params.hrp_sapling_extended_full_viewing_key(),
                 extfvk,
             );
             wdb.conn.execute(
@@ -913,8 +908,7 @@ mod tests {
 
         let seed = [0xab; 32];
         let account = AccountId::ZERO;
-        let secret_key =
-            sapling::spending_key(&seed, db_data.params.network_type().coin_type(), account);
+        let secret_key = sapling::spending_key(&seed, db_data.params.coin_type(), account);
         let extfvk = secret_key.to_extended_full_viewing_key();
 
         init_autoshielding(&mut db_data, &extfvk, account).unwrap();

zcash_keys/src/keys.rs

@@ -190,11 +190,11 @@ impl UnifiedSpendingKey {
             transparent: legacy::AccountPrivKey::from_seed(_params, seed, _account)
                 .map_err(DerivationError::Transparent)?,
             #[cfg(feature = "sapling")]
-            sapling: sapling::spending_key(seed, _params.network_type().coin_type(), _account),
+            sapling: sapling::spending_key(seed, _params.coin_type(), _account),
             #[cfg(feature = "orchard")]
             orchard: orchard::keys::SpendingKey::from_zip32_seed(
                 seed,
-                _params.network_type().coin_type(),
+                _params.coin_type(),
                 _account,
             )
             .map_err(DerivationError::Orchard)?,

zcash_primitives/src/legacy/keys.rs

@@ -120,9 +120,7 @@ impl AccountPrivKey {
     ) -> Result<AccountPrivKey, hdwallet::error::Error> {
         ExtendedPrivKey::with_seed(seed)?
             .derive_private_key(KeyIndex::hardened_from_normalize_index(44)?)?
-            .derive_private_key(KeyIndex::hardened_from_normalize_index(
-                params.network_type().coin_type(),
-            )?)?
+            .derive_private_key(KeyIndex::hardened_from_normalize_index(params.coin_type())?)?
             .derive_private_key(KeyIndex::hardened_from_normalize_index(account.into())?)
             .map(AccountPrivKey)
     }