Interim commit with new AccountRefCache, but no tests and no Block support

src/test/java/org/qortal/test/AccountRefCacheTests.java

@@ -0,0 +1,76 @@
+package org.qortal.test;
+
+public class AccountRefCacheTests {
+
+	// Test no cache in play (existing account):
+	// fetch 1st ref
+	// generate 2nd ref and call Account.setLastReference
+	// fetch 3rd ref
+	// 3rd ref should match 2st ref
+
+	// Test no cache in play (no account):
+	// fetch 1st ref
+	// generate 2nd ref and call Account.setLastReference
+	// fetch 3rd ref
+	// 3rd ref should match 2st ref
+
+	// Test cache in play (existing account, no commit):
+	// fetch 1st ref
+	// begin caching
+	// fetch 2nd ref
+	// 2nd ref should match 1st ref
+	// generate 3rd ref and call Account.setLastReference
+	// fetch 4th ref
+	// 4th ref should match 1st ref
+	// discard cache
+	// fetch 5th ref
+	// 5th ref should match 1st ref
+
+	// Test cache in play (existing account, with commit):
+	// fetch 1st ref
+	// begin caching
+	// fetch 2nd ref
+	// 2nd ref should match 1st ref
+	// generate 3rd ref and call Account.setLastReference
+	// fetch 4th ref
+	// 4th ref should match 1st ref
+	// commit cache
+	// fetch 5th ref
+	// 5th ref should match 3rd ref
+
+	// Test cache in play (new account, no commit):
+	// fetch 1st ref (null)
+	// begin caching
+	// fetch 2nd ref
+	// 2nd ref should match 1st ref
+	// generate 3rd ref and call Account.setLastReference
+	// fetch 4th ref
+	// 4th ref should match 1st ref
+	// discard cache
+	// fetch 5th ref
+	// 5th ref should match 1st ref
+
+	// Test cache in play (new account, with commit):
+	// fetch 1st ref (null)
+	// begin caching
+	// fetch 2nd ref
+	// 2nd ref should match 1st ref
+	// generate 3rd ref and call Account.setLastReference
+	// fetch 4th ref
+	// 4th ref should match 1st ref
+	// commit cache
+	// fetch 5th ref
+	// 5th ref should match 3rd ref
+
+	// Test Block support
+	// fetch 1st ref for Alice
+	// generate new payment from Alice to new account Ellen
+	// generate another payment from Alice to new account Ellen
+	// mint block containing payments
+	// confirm Ellen's ref is 1st payment's sig
+	// confirm Alice's ref if 2nd payment's sig
+	// orphan block
+	// confirm Ellen's ref is null
+	// confirm Alice's ref matches 1st ref
+
+}

src/test/java/org/qortal/test/common/transaction/TestTransaction.java

@@ -13,11 +13,7 @@ public abstract class TestTransaction {
 	protected static final Random random = new Random();
 
 	public static BaseTransactionData generateBase(PrivateKeyAccount account) throws DataException {
-		byte[] lastReference = account.getUnconfirmedLastReference();
-		if (lastReference == null)
-			lastReference = account.getLastReference();
-
-		return new BaseTransactionData(System.currentTimeMillis(), Group.NO_GROUP, lastReference, account.getPublicKey(), BlockChain.getInstance().getUnitFee(), null);
+		return new BaseTransactionData(System.currentTimeMillis(), Group.NO_GROUP, account.getLastReference(), account.getPublicKey(), BlockChain.getInstance().getUnitFee(), null);
 	}
 
 }