![]() ![]() ![]() ![]() An assertion macro takes two arguments: The first argument is the name of the test group (a freely selectable string), and the second argument is the name of the test itself. Google recommends using EXPECT_* macros as they allow the test to continue when the tests define multiple assertions. EXPECT_* nonfatal failure, function is not aborted.ASSERT_* fatal failure, function is aborted.The assertions macros follow this scheme to distinguish a fatal from a nonfatal failure: Fatal failure: Test failed, and the test function will be aborted.Nonfatal failure: Test failed, but the test function will continue.Processing an assertion generates one of the following results: Using GoogleTest, the test cases are defined by assertions macros. The Generator library is one unit, so I'll write some meaningful tests to ensure proper function. In general, a unit test should verify the behavior of a single, logical unit. Even though GoogleTest is not meant to be exclusively for unit tests, I will use it to define unit tests for the Generator library. GoogleTest is a platform-independent, open source C++ testing framework. eBook: An introduction to programming with Bash.Try for free: Red Hat Learning Subscription.This weblog contains public wisdom of our company Softwareschneiderei GmbH in Karlsruhe, Germany. Using CMake, googletest and Jenkins makes it very similar to unit testing in Java projects. The setup of a unit testing environment for a C++ project is easier than many developers think. Activate “Publish JUnit test results” post-build action.Additional build step with shell execution containing something like:Ĭd build_dir & test/sample_tests -gtest_output="xml:testresults.xml".Integrating test execution and result publishing in Jenkins Implementing the actual tests like so examples):.Target_link_libraries(sample_tests gtest_main) Creating a CMakeLists.txt for the test executables:.Adding the directory with your (future) tests to your toplevel CMakeLists.txt:.Adding googletest to your toplevel CMakeLists.txt to build it as part of your project:.Putting googletest into your source tree.Integrating googletest into CMake project With many of the other frameworks it is not as easy, CxxTest even requiring a Perl interpreter. This kind of self-containment is really what we love. It is recommended to put googletest into your source tree and build it together with your project. CppUnit fails because of its verbose syntax and manual test registration. Since our projects use CMake as a build system googletest really shines here. This rules out xUnit++ and to a certain degree boost.test because they need quite modern compilers. Moderate compiler requirements and cross-platform support.Many other frameworks need either a Jenkins-plugin or a XSLT-script to make that work. ![]() Easy publishing of result because of JUnit-compatible XML output.There are a plethora of unit testing frameworks for C++ making it difficult to choose the right one for your needs. I will briefly cover why we picked googletest, adding unit testing to the build process and publishing the results. Therefore I would like to show how easy it can be to integrate unit testing in a CMake-based project and a continuous integration (CI) server. In my – admittedly limited – perception unit testing in C++ projects does not seem as widespread as in Java or the dynamic languages like Ruby or Python. ![]()
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