gmock is a unit testing and mocking framework available from Google. Getting it set up and working correctly with a VS 2013 project takes a little bit of ceremony, however–and the errors one can stumble upon are not always the most helpful.

Get gmock compiled

Download the latest version of gmock (here we use v1.7.0)

• Open up the Visual Studio solution (gmock-1.7.0\msvc\2010\gmock.sln)
• Right click gmock > Properties > C/C++ > Code Generation > Runtime Library > Multi-threaded Debug
• Build the solution
• Ensure that gmock-1.7.0\msvc\2010\Debug contains both gmock.lib and gmock_main.lib. You will link these into your test project.

Configure a test project

• Open your Visual Studio solution (or create a new one). You should not create a new project within gmock-1.7.0\msvc\2010\gmock.sln
• Add New Project > Visual C++ > Win32 > Win32 Console Application. Name the project whatever you like, but I suggest XXXXXTest, where XXXXX is the name of the project you are testing.
• Right click on your newly created test project > Properties > Configuration Properties > VC++ Directories
• Include Directories > Add the full path to your gmock include and gtest include (e.g. C:\Users\jalospinoso\gmock-1.7.0\gtest\include and C:\Users\jalospinoso\gmock-1.7.0\include). Note: of course, you will want to add the /include folder for your project under test as well. Add this project as a dependency to your test project.
• Library Directories > Add the full path to your gmock/gtest artifacts (e.g. C:\Users\jalospinoso\gmock-1.7.0\msvc\2010\Debug`)
• Configuration properties > Linker > Input > Additional Dependencies
• Add gmock_main.lib and gmock.lib. Note also that you may want to include the name of the project under test here.
• C/C++ > Code Generation > Runtime Library > Multi-threaded Debug

Add a test

In your test project, create a new source file called HelloTest.cpp with the following contents:

#include "gmock/gmock.h"

TEST(HelloTest, AssertsCorrectly) {
	int value = 42;
	ASSERT_EQ(42, value);
}

Compile your solution. In your output folder, you will see a new artifact with a name corresponding to your new test project. This executable is a console application that runs all of the tests in your source:

> MyTest.exe
Running main() from gmock_main.cc
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from MyTest
[ RUN      ] HelloTest.AssertsCorrectly
[       OK ] HelloTest.AssertsCorrectly(0 ms)
[----------] 1 test from MyTest(0 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (0 ms total)
[  PASSED  ] 1 test.