Use the bundled prover rather than local params files for testing by default.

`fetch_params.sh` is now deprecated and the bundled proving parameters
from `wagyu-zcash-parameters` are used everywhere, so the tests should
follow suit.

Fixes #1016

zcash_client_sqlite/Cargo.toml

@@ -61,7 +61,7 @@ rand_core.workspace = true
 regex = "1.4"
 tempfile = "3.5.0"
 zcash_note_encryption.workspace = true
-zcash_proofs = { workspace = true, features = ["local-prover"] }
+zcash_proofs = { workspace = true, features = ["bundled-prover"] }
 zcash_primitives = { workspace = true, features = ["test-dependencies"] }
 zcash_client_backend = { workspace = true, features = ["test-dependencies", "unstable-serialization", "unstable-spanning-tree"] }
 zcash_address = { workspace = true, features = ["test-dependencies"] }

zcash_client_sqlite/src/wallet/sapling.rs

@@ -499,12 +499,7 @@ pub(crate) mod tests {
     };
 
     pub(crate) fn test_prover() -> impl SpendProver + OutputProver {
-        match LocalTxProver::with_default_location() {
-            Some(tx_prover) => tx_prover,
-            None => {
-                panic!("Cannot locate the Zcash parameters. Please run zcash-fetch-params or fetch-params.sh to download the parameters, and then re-run the tests.");
-            }
-        }
+        LocalTxProver::bundled()
     }
 
     #[test]

zcash_extensions/src/transparent/demo.rs

@@ -796,11 +796,7 @@ mod tests {
             .activation_height(NetworkUpgrade::ZFuture)
             .unwrap();
 
-        // Only run the test if we have the prover parameters.
-        let prover = match LocalTxProver::with_default_location() {
-            Some(prover) => prover,
-            None => return,
-        };
+        let prover = LocalTxProver::bundled();
 
         //
         // Opening transaction