Integrated googletest into the project

The plan is to add unit tests, to completely test library functionality, alongside continuous integration on GitHub.

CMakeLists.txt

@@ -7,6 +7,7 @@ set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake_mo
 #User options
 option(USE_SSL "Use SSL" ON)
 option(BUILD_EXAMPLES "Build frnetlib examples" ON)
+option(BUILD_TESTS "Build frnetlib tests" ON)
 set(FRNETLIB_BUILD_SHARED_LIBS false CACHE BOOL "Build shared library.")
 
 if(USE_SSL)
@@ -66,6 +67,13 @@ if(USE_SSL)
     endif()
 endif()
 
+#Build Tests if needbe
+if(BUILD_TESTS)
+    set(EXT_PROJECTS_DIR ${PROJECT_SOURCE_DIR}/ext)
+    add_subdirectory(${EXT_PROJECTS_DIR}/gtest)
+    add_subdirectory(tests)
+endif()
+
 #Build examples if needbe
 if(BUILD_EXAMPLES)
     add_subdirectory(examples)
@@ -81,4 +89,4 @@ install(
 install(
         DIRECTORY include
         DESTINATION .
-)
+)

ext/gtest/CMakeLists.txt

@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 2.8.8)
+project(gtest_builder C CXX)
+include(ExternalProject)
+
+set(GTEST_FORCE_SHARED_CRT ON)
+set(GTEST_DISABLE_PTHREADS OFF)
+
+if(MINGW)
+    set(GTEST_DISABLE_PTHREADS ON)
+endif()
+
+ExternalProject_Add(googletest
+    GIT_REPOSITORY https://github.com/google/googletest.git
+    CMAKE_ARGS -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG:PATH=DebugLibs
+    -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE:PATH=ReleaseLibs
+    -DCMAKE_CXX_FLAGS=${MSVC_COMPILER_DEFS}
+    -Dgtest_force_shared_crt=${GTEST_FORCE_SHARED_CRT}
+    -Dgtest_disable_pthreads=${GTEST_DISABLE_PTHREADS}
+    -DBUILD_GTEST=ON
+    PREFIX "${CMAKE_CURRENT_BINARY_DIR}"
+    # Disable install step
+    INSTALL_COMMAND ""
+    )
+
+# Specify include dir
+ExternalProject_Get_Property(googletest source_dir)
+set(GTEST_INCLUDE_DIRS ${source_dir}/googletest/include PARENT_SCOPE)
+
+# Specify MainTest's link libraries
+ExternalProject_Get_Property(googletest binary_dir)
+set(GTEST_LIBS_DIR ${binary_dir}/googlemock/gtest PARENT_SCOPE)

tests/CMakeLists.txt

@@ -0,0 +1,28 @@
+enable_testing()
+set(FRNETLIB_TEST ${FRNETLIB_TEST_STR}_test)
+include_directories(${GTEST_INCLUDE_DIRS} ${COMMON_INCLUDES})
+
+file(GLOB TEST_SRC_FILES ${PROJECT_SOURCE_DIR}/tests/*.cpp)
+add_executable(${FRNETLIB_TEST} ${TEST_SRC_FILES})
+add_dependencies(${FRNETLIB_TEST} googletest)
+
+
+if(NOT WIN32 OR MINGW)
+    target_link_libraries(${FRNETLIB_TEST}
+        ${GTEST_LIBS_DIR}/libgtest.a
+        ${GTEST_LIBS_DIR}/libgtest_main.a
+        )
+else()
+    target_link_libraries(${FRNETLIB_TEST}
+        debug ${GTEST_LIBS_DIR}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest${CMAKE_FIND_LIBRARY_SUFFIXES}
+        optimized ${GTEST_LIBS_DIR}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest${CMAKE_FIND_LIBRARY_SUFFIXES}
+        )
+    target_link_libraries(${FRNETLIB_TEST}
+        debug ${GTEST_LIBS_DIR}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest_main${CMAKE_FIND_LIBRARY_SUFFIXES}
+        optimized ${GTEST_LIBS_DIR}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest_main${CMAKE_FIND_LIBRARY_SUFFIXES}
+        )
+endif()
+
+target_link_libraries(${FRNETLIB_TEST} ${CMAKE_THREAD_LIBS_INIT})
+
+add_test(test1 ${FRNETLIB_TEST})

tests/PacketableTest.cpp

@@ -0,0 +1,45 @@
+#include <algorithm>
+#include "gtest/gtest.h"
+#include <frnetlib/Packetable.h>
+#include <frnetlib/Packet.h>
+
+class CustomClass : public fr::Packetable
+{
+public:
+    CustomClass()
+    {
+        member1 = "hello";
+        member2 = 7;
+    }
+
+    bool operator==(const CustomClass &o) const
+    {
+        return o.member1 == member1 && o.member2 == member2;
+    }
+
+    virtual void pack(fr::Packet &destination) const
+    {
+        destination << member1 << member2;
+    }
+
+    virtual void unpack(fr::Packet &source)
+    {
+        source >> member1 >> member2;
+    }
+
+private:
+    std::string member1;
+    int member2;
+};
+
+TEST(PacketableTest, pack_and_unpack)
+{
+    fr::Packet packet;
+    CustomClass custom;
+    packet << custom;
+
+    CustomClass custom2;
+    packet >> custom2;
+
+    ASSERT_EQ(custom, custom2);
+}