This is an unusual case; most projects specify install rules. CMake’s ExternalProject_Add module is maybe the best tool for this job. This allows you to download, configure and build gtest from within your project, and then link to the gtest libraries. I’ve tested the following CMakeLists.txt on Windows with Visual Studio 10 and 11, and … Read more
Use ASSERT when the condition must hold – if it doesn’t the test stops right there. Use this when the remainder of the test doesn’t have semantic meaning without this condition holding. Use EXPECT when the condition should hold, but in cases where it doesn’t we can still get value out of continuing the test. … Read more
Googletest offers functions for this: testing::internal::CaptureStdout(); std::cout << “My test”; std::string output = testing::internal::GetCapturedStdout();
If you use older version of gcc compiler or if your code under tests runs on vxWorks (or VxSim) you might have a better chance with cppUnit than Googletest framework. On the other hand, another feature of the googletest framework is availability of 3 different levels of setup/teardown: per program per test case (or test … Read more
There are at least two more options. I’ll list out some other options you should consider by explaining a certain situation. Option 4: Consider refactoring your code so that the part you want to test is public in another class. Typically when you’re tempted to test a class’s private method, it’s a sign of bad … Read more
A colleague came up with the solution by just re-throwing the exception. The knack: no need of extra FAIL() statements, just the two EXPECT… calls that test the bits you actually want: the exception as such and its value. TEST(Exception, HasCertainMessage ) { // this tests _that_ the expected exception is thrown EXPECT_THROW({ try { … Read more
(These instructions get the testing framework working for the Debug configuration. It should be pretty trivial to apply the same process to the Release configuration.) Get Google C++ Testing Framework Download the latest gtest framework Unzip to C:\gtest Build the Framework Libraries Open C:\gtest\msvc\gtest.sln in Visual Studio Set Configuration to “Debug” Build Solution Create and … Read more
It is pretty common to test C code using a C++ testing frameworks, even the leading book on the subject follows this approach. I have used googletest extensively in the past to unit test C code and can recommend it. I have written a blog post about it that might be useful: http://meekrosoft.wordpress.com/2009/11/09/unit-testing-c-code-with-the-googletest-framework/
Before you start make sure your have read and understood this note from Google! This tutorial makes using gtest easy, but may introduce nasty bugs. 1. Get the googletest framework wget https://github.com/google/googletest/archive/release-1.8.0.tar.gz Or get it by hand. I won’t maintain this little How-to, so if you stumbled upon it and the links are outdated, feel … Read more
I would really suggest looking at Google C++ Mocking Framework. Even if you don’t want to mock anything, it allows you to write rather complicated assertions with ease. For example //checks that vector v is {5, 10, 15} ASSERT_THAT(v, ElementsAre(5, 10, 15)); //checks that map m only have elements 1 => 10, 2 => 20 … Read more