diff --git a/common/StringUtil.cpp b/common/StringUtil.cpp
index 8a73ba9b4..71bb961e1 100644
--- a/common/StringUtil.cpp
+++ b/common/StringUtil.cpp
@@ -193,7 +193,10 @@ uint32 AppendAnyLenString(char** ret, uint32* bufsize, uint32* strlen, const cha
 	return *strlen;
 }
 
-uint32 hextoi(char* num) {
+uint32 hextoi(const char* num) {
+	if (num == nullptr)
+		return 0;
+
 	int len = strlen(num);
 	if (len < 3)
 		return 0;
@@ -217,7 +220,10 @@ uint32 hextoi(char* num) {
 	return ret;
 }
 
-uint64 hextoi64(char* num) {
+uint64 hextoi64(const char* num) {
+	if (num == nullptr)
+		return 0;
+
 	int len = strlen(num);
 	if (len < 3)
 		return 0;
@@ -241,7 +247,10 @@ uint64 hextoi64(char* num) {
 	return ret;
 }
 
-bool atobool(char* iBool) {
+bool atobool(const char* iBool) {
+
+	if (iBool == nullptr)
+		return false;
 	if (!strcasecmp(iBool, "true"))
 		return true;
 	if (!strcasecmp(iBool, "false"))
diff --git a/common/StringUtil.h b/common/StringUtil.h
index 81ba6e27e..46ff43183 100644
--- a/common/StringUtil.h
+++ b/common/StringUtil.h
@@ -33,9 +33,9 @@ void MakeLowerString(const char *source, char *target);
 int MakeAnyLenString(char** ret, const char* format, ...);
 uint32 AppendAnyLenString(char** ret, uint32* bufsize, uint32* strlen, const char* format, ...);
 
-uint32 hextoi(char* num);
-uint64 hextoi64(char* num);
-bool atobool(char* iBool);
+uint32 hextoi(const char* num);
+uint64 hextoi64(const char* num);
+bool atobool(const char* iBool);
 
 char* strn0cpy(char* dest, const char* source, uint32 size);
 		// return value =true if entire string(source) fit, false if it was truncated
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 2cffeae88..80f6a2f1d 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -11,6 +11,8 @@ SET(tests_headers
 	fixed_memory_variable_test.h
 	ipc_mutex_test.h
 	memory_mapped_file_test.h
+	atobool_test.h
+	hextoi_32_64_test.h
 )
 
 ADD_EXECUTABLE(tests ${tests_sources} ${tests_headers})
diff --git a/tests/atobool_test.h b/tests/atobool_test.h
new file mode 100644
index 000000000..ce02df02d
--- /dev/null
+++ b/tests/atobool_test.h
@@ -0,0 +1,103 @@
+/*	EQEMu: Everquest Server Emulator
+	Copyright (C) 2001-2013 EQEMu Development Team (http://eqemulator.net)
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; version 2 of the License.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY except by those people which sell it, which
+	are required to give you total support for your newly bought product;
+	without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+	A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#ifndef __EQEMU_TESTS_ATOBOOL_H
+#define __EQEMU_TESTS_ATOBOOL_H
+
+#include "cppunit/cpptest.h"
+#include "../common/StringUtil.h"
+
+class atoboolTest : public Test::Suite {
+	typedef void(atoboolTest::*TestFunction)(void);
+public:
+	atoboolTest() {
+		TEST_ADD(atoboolTest::TrueTest);
+		TEST_ADD(atoboolTest::FalseTest);
+		TEST_ADD(atoboolTest::YesTest);
+		TEST_ADD(atoboolTest::NoTest);
+		TEST_ADD(atoboolTest::OnTest);
+		TEST_ADD(atoboolTest::OffTest);
+		TEST_ADD(atoboolTest::EnableTest);
+		TEST_ADD(atoboolTest::DisableTest);
+		TEST_ADD(atoboolTest::EnabledTest);
+		TEST_ADD(atoboolTest::DisabledTest);
+		TEST_ADD(atoboolTest::YTest);
+		TEST_ADD(atoboolTest::NTest);
+		TEST_ADD(atoboolTest::nullptrTest);
+	}
+
+	~atoboolTest() {
+	}
+
+	private:
+
+	void TrueTest() {
+		TEST_ASSERT(atobool("true"));
+	}
+
+	void FalseTest() {
+		TEST_ASSERT(!atobool("false"));
+	}
+
+	void YesTest() {
+		TEST_ASSERT(atobool("yes"));
+	}
+
+	void NoTest() {
+		TEST_ASSERT(!atobool("no"));
+	}
+
+	void OnTest() {
+		TEST_ASSERT(atobool("on"));
+	}
+
+	void OffTest() {
+		TEST_ASSERT(!atobool("off"));
+	}
+
+	void EnableTest() {
+		TEST_ASSERT(atobool("enable"));
+	}
+
+	void DisableTest() {
+		TEST_ASSERT(!atobool("disable"));
+	}
+
+	void EnabledTest() {
+		TEST_ASSERT(atobool("enabled"));
+	}
+
+	void DisabledTest() {
+		TEST_ASSERT(!atobool("disabled"));
+	}
+
+	void YTest() {
+		TEST_ASSERT(atobool("y"));
+	}
+
+	void NTest() {
+		TEST_ASSERT(!atobool("n"));
+	}
+
+	void nullptrTest() {
+		TEST_ASSERT(!atobool(nullptr));
+	}
+
+};
+
+#endif
diff --git a/tests/hextoi_32_64_test.h b/tests/hextoi_32_64_test.h
new file mode 100644
index 000000000..eda5e7fc2
--- /dev/null
+++ b/tests/hextoi_32_64_test.h
@@ -0,0 +1,213 @@
+/*	EQEMu: Everquest Server Emulator
+	Copyright (C) 2001-2013 EQEMu Development Team (http://eqemulator.net)
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; version 2 of the License.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY except by those people which sell it, which
+	are required to give you total support for your newly bought product;
+	without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+	A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#ifndef __EQEMU_TESTS_HEXTOI_32_64_H
+#define __EQEMU_TESTS_HEXTOI_32_64_H
+
+#include "cppunit/cpptest.h"
+#include "../common/StringUtil.h"
+
+class hextoi_32_64_Test : public Test::Suite {
+	typedef void(hextoi_32_64_Test::*TestFunction)(void);
+public:
+	hextoi_32_64_Test() {
+		TEST_ADD(hextoi_32_64_Test::nullptr32Test);
+		TEST_ADD(hextoi_32_64_Test::ShortString32Test);
+		TEST_ADD(hextoi_32_64_Test::SingleDigitUpper32Test);
+		TEST_ADD(hextoi_32_64_Test::SingleDigitLower32Test);
+		TEST_ADD(hextoi_32_64_Test::DoubleDigitUpper32Test);
+		TEST_ADD(hextoi_32_64_Test::DoubleDigitLower32Test);
+
+		TEST_ADD(hextoi_32_64_Test::nullptr64Test);
+		TEST_ADD(hextoi_32_64_Test::ShortString64Test);
+		TEST_ADD(hextoi_32_64_Test::SingleDigitUpper64Test);
+		TEST_ADD(hextoi_32_64_Test::SingleDigitLower64Test);
+		TEST_ADD(hextoi_32_64_Test::DoubleDigitUpper64Test);
+		TEST_ADD(hextoi_32_64_Test::DoubleDigitLower64Test);
+	}
+
+	~hextoi_32_64_Test() {
+	}
+
+	private:
+
+	void nullptr32Test() {
+		TEST_ASSERT(hextoi(nullptr) == 0);
+	}
+
+	void ShortString32Test() {
+		// if the string is too short then it should
+		// spit out a zero.
+		// strings should be formatted: 0x** or 0X**
+		TEST_ASSERT(hextoi("") == 0);
+		TEST_ASSERT(hextoi("0") == 0);
+		TEST_ASSERT(hextoi("01") == 0);
+	}
+
+	void SingleDigitUpper32Test() {
+		TEST_ASSERT(hextoi("0x0") == 0);
+		TEST_ASSERT(hextoi("0x1") == 1);
+		TEST_ASSERT(hextoi("0x2") == 2);
+		TEST_ASSERT(hextoi("0x3") == 3);
+		TEST_ASSERT(hextoi("0x4") == 4);
+		TEST_ASSERT(hextoi("0x5") == 5);
+		TEST_ASSERT(hextoi("0x6") == 6);
+		TEST_ASSERT(hextoi("0x7") == 7);
+		TEST_ASSERT(hextoi("0x8") == 8);
+		TEST_ASSERT(hextoi("0x9") == 9);
+		TEST_ASSERT(hextoi("0xA") == 10);
+		TEST_ASSERT(hextoi("0xB") == 11);
+		TEST_ASSERT(hextoi("0xC") == 12);
+		TEST_ASSERT(hextoi("0xD") == 13);
+		TEST_ASSERT(hextoi("0xE") == 14);
+		TEST_ASSERT(hextoi("0xF") == 15);
+	}
+
+	void SingleDigitLower32Test() {
+		TEST_ASSERT(hextoi("0x0") == 0);
+		TEST_ASSERT(hextoi("0x1") == 1);
+		TEST_ASSERT(hextoi("0x2") == 2);
+		TEST_ASSERT(hextoi("0x3") == 3);
+		TEST_ASSERT(hextoi("0x4") == 4);
+		TEST_ASSERT(hextoi("0x5") == 5);
+		TEST_ASSERT(hextoi("0x6") == 6);
+		TEST_ASSERT(hextoi("0x7") == 7);
+		TEST_ASSERT(hextoi("0x8") == 8);
+		TEST_ASSERT(hextoi("0x9") == 9);
+		TEST_ASSERT(hextoi("0xa") == 10);
+		TEST_ASSERT(hextoi("0xb") == 11);
+		TEST_ASSERT(hextoi("0xc") == 12);
+		TEST_ASSERT(hextoi("0xd") == 13);
+		TEST_ASSERT(hextoi("0xe") == 14);
+		TEST_ASSERT(hextoi("0xf") == 15);
+	}
+
+	// A bit excessive to do an exhaustive test like this
+	// but it usefully tests multi digit hex.
+	void DoubleDigitUpper32Test() {
+		
+		std::string prepend = "0x";
+		std::string hexToTest;
+
+		std::string hexElements = "0123456789ABCDEF";
+		uint32 value = 0; 
+		for (std::string::iterator firstDigitIter = hexElements.begin(); firstDigitIter != hexElements.end(); ++firstDigitIter) {
+			for (std::string::iterator secondDigitIter = hexElements.begin(); secondDigitIter != hexElements.end(); ++secondDigitIter) {
+				std::string hexToTest = prepend + *firstDigitIter + *secondDigitIter;
+				TEST_ASSERT(hextoi(hexToTest.c_str()) == value);
+				value++;
+			}
+		}
+	}
+
+	// A bit excessive to do an exhaustive test like this
+	// but it usefully tests multi digit hex.
+	void DoubleDigitLower32Test() {
+		std::string prepend = "0x";
+		std::string hexToTest;
+
+		std::string hexElements = "0123456789abcdef";
+		uint32 value = 0; 
+		for (std::string::iterator firstDigitIter = hexElements.begin(); firstDigitIter != hexElements.end(); ++firstDigitIter) {
+			for (std::string::iterator secondDigitIter = hexElements.begin(); secondDigitIter != hexElements.end(); ++secondDigitIter) {
+				std::string hexToTest = prepend + *firstDigitIter + *secondDigitIter;
+				TEST_ASSERT(hextoi(hexToTest.c_str()) == value);
+				value++;
+			}
+		}
+	}
+
+
+	void nullptr64Test() {
+		TEST_ASSERT(hextoi64(nullptr) == 0);
+	}
+
+	void ShortString64Test() {
+		// if the string is too short then it should
+		// spit out a zero.
+		// strings should be formatted: 0x** or 0X**
+		TEST_ASSERT(hextoi64("") == 0);
+		TEST_ASSERT(hextoi64("0") == 0);
+		TEST_ASSERT(hextoi64("01") == 0);
+	}
+
+	void SingleDigitUpper64Test() {
+		std::string prepend = "0x";
+		std::string hexToTest;
+
+		std::string hexElements = "0123456789ABCDEF";
+		uint64 value = 0; 
+		for (std::string::iterator firstDigitIter = hexElements.begin(); firstDigitIter != hexElements.end(); ++firstDigitIter) {
+			std::string hexToTest = prepend + *firstDigitIter;
+			TEST_ASSERT(hextoi64(hexToTest.c_str()) == value);
+			value++;
+		}
+	}
+
+	void SingleDigitLower64Test() {
+
+		std::string prepend = "0x";
+		std::string hexToTest;
+
+		std::string hexElements = "0123456789abcdef";
+		uint64 value = 0; 
+		for (std::string::iterator firstDigitIter = hexElements.begin(); firstDigitIter != hexElements.end(); ++firstDigitIter) {
+			std::string hexToTest = prepend + *firstDigitIter;
+			TEST_ASSERT(hextoi64(hexToTest.c_str()) == value);
+			value++;
+		}
+	}
+
+	// A bit excessive to do an exhaustive test like this
+	// but it usefully tests multi digit hex.
+	void DoubleDigitUpper64Test() {
+		
+		std::string prepend = "0x";
+		std::string hexToTest;
+
+		std::string hexElements = "0123456789ABCDEF";
+		uint64 value = 0; 
+		for (std::string::iterator firstDigitIter = hexElements.begin(); firstDigitIter != hexElements.end(); ++firstDigitIter) {
+			for (std::string::iterator secondDigitIter = hexElements.begin(); secondDigitIter != hexElements.end(); ++secondDigitIter) {
+				std::string hexToTest = prepend + *firstDigitIter + *secondDigitIter;
+				TEST_ASSERT(hextoi64(hexToTest.c_str()) == value);
+				value++;
+			}
+		}
+	}
+
+	// A bit excessive to do an exhaustive test like this
+	// but it usefully tests multi digit hex.
+	void DoubleDigitLower64Test() {
+		std::string prepend = "0x";
+		std::string hexToTest;
+
+		std::string hexElements = "0123456789abcdef";
+		uint64 value = 0; 
+		for (std::string::iterator firstDigitIter = hexElements.begin(); firstDigitIter != hexElements.end(); ++firstDigitIter) {
+			for (std::string::iterator secondDigitIter = hexElements.begin(); secondDigitIter != hexElements.end(); ++secondDigitIter) {
+				std::string hexToTest = prepend + *firstDigitIter + *secondDigitIter;
+				TEST_ASSERT(hextoi64(hexToTest.c_str()) == value);
+				value++;
+			}
+		}
+	}
+
+};
+
+#endif
diff --git a/tests/main.cpp b/tests/main.cpp
index d12aa143c..fd0862edb 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -24,6 +24,8 @@
 #include "ipc_mutex_test.h"
 #include "fixed_memory_test.h"
 #include "fixed_memory_variable_test.h"
+#include "atobool_test.h"
+#include "hextoi_32_64_test.h"
 
 int main() {
 	try {
@@ -34,6 +36,8 @@ int main() {
 		tests.add(new IPCMutexTest());
 		tests.add(new FixedMemoryHashTest());
 		tests.add(new FixedMemoryVariableHashTest());
+		tests.add(new atoboolTest());
+		tests.add(new hextoi_32_64_Test());
 		tests.run(*output, true);
 	} catch(...) {
 		return -1;