Part of #2966, extending Sprout tests to other epochs.

Tests updated:
- test_Get
- test_simple_joinsplit_invalidity

src/test/transaction_tests.cpp

@@ -30,6 +30,7 @@
 #include <boost/assign/list_of.hpp>
 #include <boost/test/unit_test.hpp>
 #include <boost/assign/list_of.hpp>
+#include <boost/test/data/test_case.hpp>
 
 #include <univalue.h>
 
@@ -398,12 +399,9 @@ BOOST_AUTO_TEST_CASE(test_basic_joinsplit_verification)
     }
 }
 
-BOOST_AUTO_TEST_CASE(test_simple_joinsplit_invalidity)
+void test_simple_joinsplit_invalidity(uint32_t consensusBranchId, CMutableTransaction tx)
 {
-    uint32_t consensusBranchId = SPROUT_BRANCH_ID;
     auto verifier = libzcash::ProofVerifier::Strict();
-    CMutableTransaction tx;
-    tx.nVersion = 2;
     {
         // Ensure that empty vin/vout remain invalid without
         // joinsplits.
@@ -531,9 +529,34 @@ BOOST_AUTO_TEST_CASE(test_simple_joinsplit_invalidity)
     }
 }
 
-BOOST_AUTO_TEST_CASE(test_Get)
+BOOST_AUTO_TEST_CASE(test_simple_joinsplit_invalidity_driver) {
+    {
+        CMutableTransaction mtx;
+        mtx.nVersion = 2;
+        test_simple_joinsplit_invalidity(SPROUT_BRANCH_ID, mtx);
+    }
+    {
+        // Switch to regtest parameters so we can activate Overwinter
+        SelectParams(CBaseChainParams::REGTEST);
+
+        CMutableTransaction mtx;
+        mtx.fOverwintered = true;
+        mtx.nVersionGroupId = OVERWINTER_VERSION_GROUP_ID;
+        mtx.nVersion = 3;
+
+        UpdateNetworkUpgradeParameters(Consensus::UPGRADE_OVERWINTER, Consensus::NetworkUpgrade::ALWAYS_ACTIVE);
+        test_simple_joinsplit_invalidity(NetworkUpgradeInfo[Consensus::UPGRADE_OVERWINTER].nBranchId, mtx);
+        UpdateNetworkUpgradeParameters(Consensus::UPGRADE_OVERWINTER, Consensus::NetworkUpgrade::NO_ACTIVATION_HEIGHT);
+
+        // Switch back to mainnet parameters as originally selected in test fixture
+        SelectParams(CBaseChainParams::MAIN);
+    }
+}
+
+// Parameterized testing over consensus branch ids
+BOOST_DATA_TEST_CASE(test_Get, boost::unit_test::data::xrange(static_cast<int>(Consensus::MAX_NETWORK_UPGRADES)))
 {
-    uint32_t consensusBranchId = SPROUT_BRANCH_ID;
+    uint32_t consensusBranchId = NetworkUpgradeInfo[sample].nBranchId;
 
     CBasicKeyStore keystore;
     CCoinsView coinsDummy;