Add Sapling Add/Have/Get to keystore

src/wallet/gtest/test_wallet_zkeys.cpp

@@ -7,9 +7,42 @@
 
 #include <boost/filesystem.hpp>
 
+/**
+ * This test covers Sapling methods on CWallet
+ * GenerateNewSaplingZKey()
+ */
+TEST(wallet_zkeys_tests, store_and_load_sapling_zkeys) {
+    CWallet wallet;
+    
+    // wallet should be empty
+    // std::set<libzcash::SaplingPaymentAddress> addrs;
+    // wallet.GetSaplingPaymentAddresses(addrs);
+    // ASSERT_EQ(0, addrs.size());
+        
+    // wallet should have one key
+    auto saplingAddr = wallet.GenerateNewSaplingZKey();
+    // ASSERT_NE(boost::get<libzcash::SaplingPaymentAddress>(&address), nullptr);
+    // auto sapling_addr = boost::get<libzcash::SaplingPaymentAddress>(saplingAddr);
+    // wallet.GetSaplingPaymentAddresses(addrs);
+    // ASSERT_EQ(1, addrs.size());
+
+    auto sk = libzcash::SaplingSpendingKey::random();
+    auto full_viewing_key = sk.full_viewing_key();
+    ASSERT_TRUE(wallet.AddSaplingSpendingKey(sk));
+    
+    // verify wallet has spending key for the address
+    ASSERT_TRUE(wallet.HaveSaplingSpendingKey(full_viewing_key));
+    
+    // check key is the same
+    libzcash::SaplingSpendingKey keyOut;
+    wallet.GetSaplingSpendingKey(full_viewing_key, keyOut);
+    ASSERT_EQ(sk, keyOut);
+}
+
 /**
  * This test covers methods on CWallet
  * GenerateNewZKey()
+ * GenerateNewSaplingZKey()
  * AddZKey()
  * LoadZKey()
  * LoadZKeyMetadata()