diff --git a/TestHelper.cpp b/TestHelper.cpp
index dd7c09eab..a9913c28a 100644
--- a/TestHelper.cpp
+++ b/TestHelper.cpp
@@ -76,7 +76,9 @@ ImportTest::ImportTest(json_spirit::mObject& _o, bool isFiller):
 	m_TestObject(_o)
 {
 	importEnv(_o["env"].get_obj());
-	importState(_o["pre"].get_obj(), m_statePre);
+	importState(_o["pre"].get_obj(), m_statePre);	
+	if (_o.count("expect") > 0)
+		importState(_o["expect"].get_obj(), m_stateExpect);
 	importTransaction(_o["transaction"].get_obj());
 
 	if (!isFiller)
@@ -176,6 +178,64 @@ void ImportTest::importTransaction(json_spirit::mObject& _o)
 	}
 }
 
+void ImportTest::checkFillTest(State const& _statePost)
+{
+	//TestNet Addresses
+	static Addresses testNetAddressList;
+	testNetAddressList.push_back(Address("0000000000000000000000000000000000000001"));
+	testNetAddressList.push_back(Address("0000000000000000000000000000000000000002"));
+	testNetAddressList.push_back(Address("0000000000000000000000000000000000000003"));
+	testNetAddressList.push_back(Address("0000000000000000000000000000000000000004"));
+	testNetAddressList.push_back(Address("1a26338f0d905e295fccb71fa9ea849ffa12aaf4"));
+	testNetAddressList.push_back(Address("2ef47100e0787b915105fd5e3f4ff6752079d5cb"));
+	testNetAddressList.push_back(Address("6c386a4b26f73c802f34673f7248bb118f97424a"));
+	testNetAddressList.push_back(Address("b9c015918bdaba24b4ff057a92a3873d6eb201be"));
+	testNetAddressList.push_back(Address("cd2a3d9f938e13cd947ec05abc7fe734df8dd826"));
+	testNetAddressList.push_back(Address("dbdbdb2cbd23b783741e8d7fcf51e459b497e4a6"));
+	testNetAddressList.push_back(Address("e4157b34ea9615cfbde6b4fda419828124b70c78"));
+	testNetAddressList.push_back(Address("e6716f9544a56c530d868e4bfbacb172315bdead"));
+
+	if (m_TestObject.find("expect") != m_TestObject.end())
+	{
+		for (auto const& a: m_stateExpect.addresses())
+		{
+			bool bFound = false;  //do not count default addresses as it's not in addressInUse
+			for (auto const& it: testNetAddressList)
+			{
+				if (it == a.first)
+				{
+					bFound = true;
+					break;
+				}
+			}
+
+			if (bFound)
+				continue;
+
+			BOOST_CHECK_MESSAGE(_statePost.addressInUse(a.first), "Filling Test Error: " << a.first << " expected address not in use!");
+			if (_statePost.addressInUse(a.first))
+			{
+				BOOST_CHECK_MESSAGE(m_stateExpect.balance(a.first) == _statePost.balance(a.first),
+									"Filling Test Error: " << a.first <<  ": incorrect balance " << _statePost.balance(a.first) << ", expected " << m_stateExpect.balance(a.first));
+				BOOST_CHECK_MESSAGE(m_stateExpect.transactionsFrom(a.first) == _statePost.transactionsFrom(a.first),
+									"Filling Test Error: " << a.first <<  ": incorrect nonce " << _statePost.transactionsFrom(a.first) << ", expected " << m_stateExpect.transactionsFrom(a.first));
+
+				map<u256, u256> stateStorage = _statePost.storage(a.first);
+				for (auto const& s: m_stateExpect.storage(a.first))
+				{
+					BOOST_CHECK_MESSAGE(stateStorage[s.first] == s.second,
+									"Filling Test Error: " << a.first <<  ": incorrect storage [" << s.first << "] = " << toHex(stateStorage[s.first]) << ", expected [" << s.first << "] = " << toHex(s.second));
+				}
+
+				BOOST_CHECK_MESSAGE(m_stateExpect.code(a.first) == 	_statePost.code(a.first),
+									"Filling Test Error: " << a.first <<  ": incorrect code '" << toHex(_statePost.code(a.first)) << "', expected '" << toHex(m_stateExpect.code(a.first)) << "'");
+			}
+		}
+
+		m_TestObject.erase(m_TestObject.find("expect"));
+	}
+}
+
 void ImportTest::exportTest(bytes const& _output, State const& _statePost)
 {
 	// export output
@@ -184,8 +244,10 @@ void ImportTest::exportTest(bytes const& _output, State const& _statePost)
 	// export logs
 	m_TestObject["logs"] = exportLog(_statePost.pending().size() ? _statePost.log(0) : LogEntries());
 
-	// export post state
+	// compare expected state with post state
+	checkFillTest(_statePost);
 
+	// export post state
 	m_TestObject["post"] = fillJsonWithState(_statePost);
 	m_TestObject["postStateRoot"] = toHex(_statePost.rootHash().asBytes());
 
diff --git a/TestHelper.h b/TestHelper.h
index 7f6d73365..d830ceb66 100644
--- a/TestHelper.h
+++ b/TestHelper.h
@@ -110,11 +110,13 @@ public:
 	void exportTest(bytes const& _output, eth::State const& _statePost);
 
 	eth::State m_statePre;
+	eth::State m_stateExpect;
 	eth::State m_statePost;
 	eth::ExtVMFace m_environment;
 	eth::Transaction m_transaction;
 
 private:
+	void checkFillTest(eth::State const& _statePost);
 	json_spirit::mObject& m_TestObject;
 };