[test] Add tests for some walletmodel functions

Add unit tests for some walletmodel functions that will be refactored & moved
in the next commit.

2 files changed, 127 insertions, 3 deletions

diff --git a/src/Makefile.qttest.include b/src/Makefile.qttest.include
index 948e13a9e1..391b9ebdf6 100644
--- a/src/Makefile.qttest.include
+++ b/src/Makefile.qttest.include
@@ -46,7 +46,8 @@ qt_test_test_bitcoin_qt_SOURCES = \
 if ENABLE_WALLET
 qt_test_test_bitcoin_qt_SOURCES += \
   qt/test/paymentservertests.cpp \
-  qt/test/wallettests.cpp
+  qt/test/wallettests.cpp \
+  wallet/test/wallet_test_fixture.cpp
 endif
 
 nodist_qt_test_test_bitcoin_qt_SOURCES = $(TEST_QT_MOC_CPP)
diff --git a/src/qt/test/wallettests.cpp b/src/qt/test/wallettests.cpp
index a0dce3d997..867711309e 100644
--- a/src/qt/test/wallettests.cpp
+++ b/src/qt/test/wallettests.cpp
@@ -1,5 +1,6 @@
 #include "wallettests.h"
 
+#include "consensus/validation.h"
 #include "qt/bitcoinamountfield.h"
 #include "qt/callback.h"
 #include "qt/optionsmodel.h"
@@ -11,6 +12,8 @@
 #include "qt/walletmodel.h"
 #include "test/test_bitcoin.h"
 #include "validation.h"
+#include "wallet/test/wallet_test_fixture.h"
+#include "wallet/coincontrol.h"
 #include "wallet/wallet.h"
 
 #include <QAbstractButton>
@@ -20,6 +23,118 @@
 
 namespace
 {
+
+void TestLoadReceiveRequests()
+{
+    WalletTestingSetup test;
+    OptionsModel optionsModel;
+    WalletModel walletModel(nullptr, pwalletMain, &optionsModel);
+
+    CTxDestination dest = CKeyID();
+    pwalletMain->AddDestData(dest, "misc", "val_misc");
+    pwalletMain->AddDestData(dest, "rr0", "val_rr0");
+    pwalletMain->AddDestData(dest, "rr1", "val_rr1");
+
+    std::vector<std::string> values;
+    walletModel.loadReceiveRequests(values);
+    QCOMPARE((int)values.size(), 2);
+    QCOMPARE(QString::fromStdString(values[0]), QString("val_rr0"));
+    QCOMPARE(QString::fromStdString(values[1]), QString("val_rr1"));
+}
+
+class ListCoinsTestingSetup : public TestChain100Setup
+{
+public:
+    ListCoinsTestingSetup()
+    {
+        CreateAndProcessBlock({}, GetScriptForRawPubKey(coinbaseKey.GetPubKey()));
+        ::bitdb.MakeMock();
+        wallet.reset(new CWallet(std::unique_ptr<CWalletDBWrapper>(new CWalletDBWrapper(&bitdb, "wallet_test.dat"))));
+        bool firstRun;
+        wallet->LoadWallet(firstRun);
+        LOCK(wallet->cs_wallet);
+        wallet->AddKeyPubKey(coinbaseKey, coinbaseKey.GetPubKey());
+        wallet->ScanForWalletTransactions(chainActive.Genesis());
+    }
+
+    ~ListCoinsTestingSetup()
+    {
+        ::bitdb.Flush(true);
+        ::bitdb.Reset();
+    }
+
+    CWalletTx& AddTx(CRecipient recipient)
+    {
+        CWalletTx wtx;
+        CReserveKey reservekey(wallet.get());
+        CAmount fee;
+        int changePos = -1;
+        std::string error;
+        wallet->CreateTransaction({recipient}, wtx, reservekey, fee, changePos, error);
+        CValidationState state;
+        wallet->CommitTransaction(wtx, reservekey, nullptr, state);
+        auto it = wallet->mapWallet.find(wtx.GetHash());
+        CreateAndProcessBlock({CMutableTransaction(*it->second.tx)}, GetScriptForRawPubKey(coinbaseKey.GetPubKey()));
+        it->second.SetMerkleBranch(chainActive.Tip(), 1);
+        return it->second;
+    }
+
+    std::unique_ptr<CWallet> wallet;
+};
+
+void TestListCoins()
+{
+    ListCoinsTestingSetup test;
+    OptionsModel optionsModel;
+    WalletModel walletModel(nullptr, test.wallet.get(), &optionsModel);
+    QString coinbaseAddress = QString::fromStdString(CBitcoinAddress(test.coinbaseKey.GetPubKey().GetID()).ToString());
+
+    LOCK(test.wallet->cs_wallet);
+
+    // Confirm ListCoins initially returns 1 coin grouped under coinbaseKey
+    // address.
+    std::map<QString, std::vector<COutput>> list;
+    walletModel.listCoins(list);
+    QCOMPARE((int)list.size(), 1);
+    QCOMPARE(list.begin()->first, coinbaseAddress);
+    QCOMPARE((int)list.begin()->second.size(), 1);
+
+    // Check initial balance from one mature coinbase transaction.
+    CCoinControl coinControl;
+    QCOMPARE(50 * COIN, walletModel.getBalance(&coinControl));
+
+    // Add a transaction creating a change address, and confirm ListCoins still
+    // returns the coin associated with the change address underneath the
+    // coinbaseKey pubkey, even though the change address has a different
+    // pubkey.
+    test.AddTx(CRecipient{GetScriptForRawPubKey({}), 1 * COIN, false /* subtract fee */});
+    list.clear();
+    walletModel.listCoins(list);
+    QCOMPARE((int)list.size(), 1);
+    QCOMPARE(list.begin()->first, coinbaseAddress);
+    QCOMPARE((int)list.begin()->second.size(), 2);
+
+    // Lock both coins. Confirm number of available coins drops to 0.
+    std::vector<COutput> available;
+    test.wallet->AvailableCoins(available);
+    QCOMPARE((int)available.size(), 2);
+    for (const auto& group : list) {
+        for (const auto& coin : group.second) {
+            test.wallet->LockCoin(COutPoint(coin.tx->GetHash(), coin.i));
+        }
+    }
+    test.wallet->AvailableCoins(available);
+    QCOMPARE((int)available.size(), 0);
+
+    // Confirm ListCoins still returns same result as before, despite coins
+    // being locked.
+    list.clear();
+    walletModel.listCoins(list);
+    QCOMPARE((int)list.size(), 1);
+    QCOMPARE(list.begin()->first, coinbaseAddress);
+    QCOMPARE((int)list.begin()->second.size(), 2);
+}
+
 //! Press "Yes" button in modal send confirmation dialog.
 void ConfirmSend()
 {
@@ -65,7 +180,6 @@ QModelIndex FindTx(const QAbstractItemModel& model, const uint256& txid)
     }
     return {};
 }
-}
 
 //! Simple qt wallet tests.
 //
@@ -80,7 +194,7 @@ QModelIndex FindTx(const QAbstractItemModel& model, const uint256& txid)
 //     src/qt/test/test_bitcoin-qt -platform xcb      # Linux
 //     src/qt/test/test_bitcoin-qt -platform windows  # Windows
 //     src/qt/test/test_bitcoin-qt -platform cocoa    # macOS
-void WalletTests::walletTests()
+void TestSendCoins()
 {
     // Set up wallet and chain with 101 blocks (1 mature block for spending).
     TestChain100Setup test;
@@ -117,3 +231,12 @@ void WalletTests::walletTests()
     bitdb.Flush(true);
     bitdb.Reset();
 }
+
+}
+
+void WalletTests::walletTests()
+{
+    TestLoadReceiveRequests();
+    TestListCoins();
+    TestSendCoins();
+}