Add LedgerClosed test (RIPD-1272)

Migrate the logic in monitor-test.js to a new jtx test
that covers the ledger_closed RPC method.

Builds/VisualStudio2015/RippleD.vcxproj

@@ -4720,6 +4720,10 @@
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='debug|x64'">True</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='release|x64'">True</ExcludedFromBuild>
     </ClCompile>
+    <ClCompile Include="..\..\src\test\rpc\LedgerClosed_test.cpp">
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='debug|x64'">True</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='release|x64'">True</ExcludedFromBuild>
+    </ClCompile>
     <ClCompile Include="..\..\src\test\rpc\LedgerData_test.cpp">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='debug|x64'">True</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='release|x64'">True</ExcludedFromBuild>

Builds/VisualStudio2015/RippleD.vcxproj.filters

@@ -5415,6 +5415,9 @@
     <ClCompile Include="..\..\src\test\rpc\KeyGeneration_test.cpp">
       <Filter>test\rpc</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\test\rpc\LedgerClosed_test.cpp">
+      <Filter>test\rpc</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\test\rpc\LedgerData_test.cpp">
       <Filter>test\rpc</Filter>
     </ClCompile>

src/test/rpc/LedgerClosed_test.cpp

@@ -0,0 +1,64 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2016 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <ripple/protocol/JsonFields.h>
+#include <ripple/protocol/Feature.h>
+#include <ripple/test/jtx.h>
+
+namespace ripple {
+
+class LedgerClosed_test : public beast::unit_test::suite
+{
+public:
+
+    void testMonitorRoot()
+    {
+        using namespace test::jtx;
+        Env env {*this};
+        Account const alice {"alice"};
+        env.fund(XRP(10000), alice);
+
+        auto lc_result = env.rpc("ledger_closed") [jss::result];
+        BEAST_EXPECT(lc_result[jss::ledger_hash]  == "8AEDBB96643962F1D40F01E25632ABB3C56C9F04B0231EE4B18248B90173D189");
+        BEAST_EXPECT(lc_result[jss::ledger_index] == 2);
+
+        env.close();
+        auto const ar_master = env.le(env.master);
+        BEAST_EXPECT(ar_master->getAccountID(sfAccount) == env.master.id());
+        BEAST_EXPECT((*ar_master)[sfBalance] == drops( 99999989999999980 ));
+
+        auto const ar_alice = env.le(alice);
+        BEAST_EXPECT(ar_alice->getAccountID(sfAccount) == alice.id());
+        BEAST_EXPECT((*ar_alice)[sfBalance] == XRP( 10000 ));
+
+        lc_result = env.rpc("ledger_closed") [jss::result];
+        BEAST_EXPECT(lc_result[jss::ledger_hash]  == "7C3EEDB3124D92E49E75D81A8826A2E65A75FD71FC3FD6F36FEB803C5F1D812D");
+        BEAST_EXPECT(lc_result[jss::ledger_index] == 3);
+    }
+
+    void run()
+    {
+        testMonitorRoot();
+    }
+};
+
+BEAST_DEFINE_TESTSUITE(LedgerClosed,app,ripple);
+
+}
+

src/unity/rpc_test_unity.cpp

@@ -27,6 +27,7 @@
 #include <test/rpc/GatewayBalances_test.cpp>
 #include <test/rpc/JSONRPC_test.cpp>
 #include <test/rpc/KeyGeneration_test.cpp>
+#include <test/rpc/LedgerClosed_test.cpp>
 #include <test/rpc/LedgerData_test.cpp>
 #include <test/rpc/LedgerRequestRPC_test.cpp>
 #include <test/rpc/RobustTransaction_test.cpp>