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## Google Mock ## The Google C++ mocking framework. ### Overview ### Google's framework for writing and using C++ mock classes. It can help you derive better designs of your system and write better tests. It is inspired by: * [jMock](http://www.jmock.org/), * [EasyMock](http://www.easymock.org/), and * [Hamcrest](http://code.google.com/p/hamcrest/), and designed with C++'s specifics in mind. Google mock: * lets you create mock classes trivially using simple macros. * supports a rich set of matchers and actions. * handles unordered, partially ordered, or completely ordered expectations. * is extensible by users. We hope you find it useful! ### Features ### * Provides a declarative syntax for defining mocks. * Can easily define partial (hybrid) mocks, which are a cross of real and mock objects. * Handles functions of arbitrary types and overloaded functions. * Comes with a rich set of matchers for validating function arguments. * Uses an intuitive syntax for controlling the behavior of a mock. * Does automatic verification of expectations (no record-and-replay needed). * Allows arbitrary (partial) ordering constraints on function calls to be expressed,. * Lets a user extend it by defining new matchers and actions. * Does not use exceptions. * Is easy to learn and use. Please see the project page above for more information as well as the mailing list for questions, discussions, and development. There is also an IRC channel on OFTC (irc.oftc.net) #gtest available. Please join us! Please note that code under [scripts/generator](scripts/generator/) is from [cppclean](http://code.google.com/p/cppclean/) and released under the Apache License, which is different from Google Mock's license. ## Getting Started ## If you are new to the project, we suggest that you read the user documentation in the following order: * Learn the [basics](../googletest/docs/Primer.md) of Google Test, if you choose to use Google Mock with it (recommended). * Read [Google Mock for Dummies](docs/ForDummies.md). * Read the instructions below on how to build Google Mock. You can also watch Zhanyong's [talk](http://www.youtube.com/watch?v=sYpCyLI47rM) on Google Mock's usage and implementation. Once you understand the basics, check out the rest of the docs: * [CheatSheet](docs/CheatSheet.md) - all the commonly used stuff at a glance. * [CookBook](docs/CookBook.md) - recipes for getting things done, including advanced techniques. If you need help, please check the [KnownIssues](docs/KnownIssues.md) and [FrequentlyAskedQuestions](docs/FrequentlyAskedQuestions.md) before posting a question on the [discussion group](http://groups.google.com/group/googlemock). ### Using Google Mock Without Google Test ### Google Mock is not a testing framework itself. Instead, it needs a testing framework for writing tests. Google Mock works seamlessly with [Google Test](http://code.google.com/p/googletest/), but you can also use it with [any C++ testing framework](googlemock/ForDummies.md#Using_Google_Mock_with_Any_Testing_Framework). ### Requirements for End Users ### Google Mock is implemented on top of [Google Test]( http://github.com/google/googletest/), and depends on it. You must use the bundled version of Google Test when using Google Mock. You can also easily configure Google Mock to work with another testing framework, although it will still need Google Test. Please read ["Using_Google_Mock_with_Any_Testing_Framework"]( docs/ForDummies.md#Using_Google_Mock_with_Any_Testing_Framework) for instructions. Google Mock depends on advanced C++ features and thus requires a more modern compiler. The following are needed to use Google Mock: #### Linux Requirements #### * GNU-compatible Make or "gmake" * POSIX-standard shell * POSIX(-2) Regular Expressions (regex.h) * C++98-standard-compliant compiler (e.g. GCC 3.4 or newer) #### Windows Requirements #### * Microsoft Visual C++ 8.0 SP1 or newer #### Mac OS X Requirements #### * Mac OS X 10.4 Tiger or newer * Developer Tools Installed ### Requirements for Contributors ### We welcome patches. If you plan to contribute a patch, you need to build Google Mock and its tests, which has further requirements: * Automake version 1.9 or newer * Autoconf version 2.59 or newer * Libtool / Libtoolize * Python version 2.3 or newer (for running some of the tests and re-generating certain source files from templates) ### Building Google Mock ### #### Preparing to Build (Unix only) #### If you are using a Unix system and plan to use the GNU Autotools build system to build Google Mock (described below), you'll need to configure it now. To prepare the Autotools build system: cd googlemock autoreconf -fvi To build Google Mock and your tests that use it, you need to tell your build system where to find its headers and source files. The exact way to do it depends on which build system you use, and is usually straightforward. This section shows how you can integrate Google Mock into your existing build system. Suppose you put Google Mock in directory `${GMOCK_DIR}` and Google Test in `${GTEST_DIR}` (the latter is `${GMOCK_DIR}/gtest` by default). To build Google Mock, create a library build target (or a project as called by Visual Studio and Xcode) to compile ${GTEST_DIR}/src/gtest-all.cc and ${GMOCK_DIR}/src/gmock-all.cc with ${GTEST_DIR}/include and ${GMOCK_DIR}/include in the system header search path, and ${GTEST_DIR} and ${GMOCK_DIR} in the normal header search path. Assuming a Linux-like system and gcc, something like the following will do: g++ -isystem ${GTEST_DIR}/include -I${GTEST_DIR} \ -isystem ${GMOCK_DIR}/include -I${GMOCK_DIR} \ -pthread -c ${GTEST_DIR}/src/gtest-all.cc g++ -isystem ${GTEST_DIR}/include -I${GTEST_DIR} \ -isystem ${GMOCK_DIR}/include -I${GMOCK_DIR} \ -pthread -c ${GMOCK_DIR}/src/gmock-all.cc ar -rv libgmock.a gtest-all.o gmock-all.o (We need -pthread as Google Test and Google Mock use threads.) Next, you should compile your test source file with ${GTEST\_DIR}/include and ${GMOCK\_DIR}/include in the header search path, and link it with gmock and any other necessary libraries: g++ -isystem ${GTEST_DIR}/include -isystem ${GMOCK_DIR}/include \ -pthread path/to/your_test.cc libgmock.a -o your_test As an example, the make/ directory contains a Makefile that you can use to build Google Mock on systems where GNU make is available (e.g. Linux, Mac OS X, and Cygwin). It doesn't try to build Google Mock's own tests. Instead, it just builds the Google Mock library and a sample test. You can use it as a starting point for your own build script. If the default settings are correct for your environment, the following commands should succeed: cd ${GMOCK_DIR}/make make ./gmock_test If you see errors, try to tweak the contents of [make/Makefile](make/Makefile) to make them go away. ### Windows ### The msvc/2005 directory contains VC++ 2005 projects and the msvc/2010 directory contains VC++ 2010 projects for building Google Mock and selected tests. Change to the appropriate directory and run "msbuild gmock.sln" to build the library and tests (or open the gmock.sln in the MSVC IDE). If you want to create your own project to use with Google Mock, you'll have to configure it to use the `gmock_config` propety sheet. For that: * Open the Property Manager window (View | Other Windows | Property Manager) * Right-click on your project and select "Add Existing Property Sheet..." * Navigate to `gmock_config.vsprops` or `gmock_config.props` and select it. * In Project Properties | Configuration Properties | General | Additional Include Directories, type <path to Google Mock>/include. ### Tweaking Google Mock ### Google Mock can be used in diverse environments. The default configuration may not work (or may not work well)