rpc/account; fixed mempool tx filter bug; fixed iavl_tree persistence

bug

state/state_test.go

@@ -143,6 +143,75 @@ func TestGenesisSaveLoad(t *testing.T) {
 	}
 }
 
+/* TODO: Write better tests, and also refactor out common code
+func TestSendTxStateSave(t *testing.T) {
+
+	// Generate a state, save & load it.
+	s0, privAccounts, _ := RandGenesisState(10, true, 1000, 5, true, 1000)
+
+	sendTx := &SendTx{
+		Inputs: []*TxInput{
+			&TxInput{
+				Address:   privAccounts[0].PubKey.Address(),
+				Amount:    100,
+				Sequence:  1,
+				Signature: nil,
+				PubKey:    privAccounts[0].PubKey,
+			},
+		},
+		Outputs: []*TxOutput{
+			&TxOutput{
+				Address: []byte("01234567890123456789"),
+				Amount:  100,
+			},
+		},
+	}
+	sendTx.Inputs[0].Signature = privAccounts[0].Sign(sendTx)
+
+	// Mutate the state to append block with sendTx
+	block := &Block{
+		Header: &Header{
+			Network:        config.App.GetString("Network"),
+			Height:         1,
+			Time:           s0.LastBlockTime.Add(time.Minute),
+			Fees:           0,
+			NumTxs:         1,
+			LastBlockHash:  s0.LastBlockHash,
+			LastBlockParts: s0.LastBlockParts,
+			StateHash:      nil,
+		},
+		Validation: &Validation{},
+		Data: &Data{
+			Txs: []Tx{sendTx},
+		},
+	}
+	blockParts := NewPartSetFromData(BinaryBytes(block))
+
+	// The last argument to AppendBlock() is `false`,
+	// which sets Block.Header.StateHash.
+	err := s0.Copy().AppendBlock(block, blockParts.Header(), false)
+	if err != nil {
+		t.Error("Error appending initial block:", err)
+	}
+	if len(block.Header.StateHash) == 0 {
+		t.Error("Expected StateHash but got nothing.")
+	}
+
+	// Now append the block to s0.
+	// This time we also check the StateHash (as computed above).
+	err = s0.AppendBlock(block, blockParts.Header(), true)
+	if err != nil {
+		t.Error("Error appending initial block:", err)
+	}
+
+	// Save s0
+	s0.Save()
+	fmt.Printf("s0.accounts.Hash(): %X\n", s0.accounts.Hash())
+	s0.DB.Print()
+
+}
+*/
+
 func TestTxSequence(t *testing.T) {
 
 	state, privAccounts, _ := RandGenesisState(3, true, 1000, 1, true, 1000)