From 0a89edfda900b6322d0823a56f3d8241c90035a2 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 16 Dec 2016 13:20:29 +0100 Subject: Google C++ Testing Framework 1.8.0 --- README.md | 280 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 280 insertions(+) create mode 100644 README.md (limited to 'README.md') diff --git a/README.md b/README.md new file mode 100644 index 0000000..edd4408 --- /dev/null +++ b/README.md @@ -0,0 +1,280 @@ + +### Generic Build Instructions ### + +#### Setup #### + +To build Google Test 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. + +#### Build #### + +Suppose you put Google Test in directory `${GTEST_DIR}`. To build it, +create a library build target (or a project as called by Visual Studio +and Xcode) to compile + + ${GTEST_DIR}/src/gtest-all.cc + +with `${GTEST_DIR}/include` in the system header search path and `${GTEST_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} \ + -pthread -c ${GTEST_DIR}/src/gtest-all.cc + ar -rv libgtest.a gtest-all.o + +(We need `-pthread` as Google Test uses threads.) + +Next, you should compile your test source file with +`${GTEST_DIR}/include` in the system header search path, and link it +with gtest and any other necessary libraries: + + g++ -isystem ${GTEST_DIR}/include -pthread path/to/your_test.cc libgtest.a \ + -o your_test + +As an example, the make/ directory contains a Makefile that you can +use to build Google Test on systems where GNU make is available +(e.g. Linux, Mac OS X, and Cygwin). It doesn't try to build Google +Test's own tests. Instead, it just builds the Google Test 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 ${GTEST_DIR}/make + make + ./sample1_unittest + +If you see errors, try to tweak the contents of `make/Makefile` to make +them go away. There are instructions in `make/Makefile` on how to do +it. + +### Using CMake ### + +Google Test comes with a CMake build script ( +[CMakeLists.txt](CMakeLists.txt)) that can be used on a wide range of platforms ("C" stands for +cross-platform.). If you don't have CMake installed already, you can +download it for free from . + +CMake works by generating native makefiles or build projects that can +be used in the compiler environment of your choice. The typical +workflow starts with: + + mkdir mybuild # Create a directory to hold the build output. + cd mybuild + cmake ${GTEST_DIR} # Generate native build scripts. + +If you want to build Google Test's samples, you should replace the +last command with + + cmake -Dgtest_build_samples=ON ${GTEST_DIR} + +If you are on a \*nix system, you should now see a Makefile in the +current directory. Just type 'make' to build gtest. + +If you use Windows and have Visual Studio installed, a `gtest.sln` file +and several `.vcproj` files will be created. You can then build them +using Visual Studio. + +On Mac OS X with Xcode installed, a `.xcodeproj` file will be generated. + +### Legacy Build Scripts ### + +Before settling on CMake, we have been providing hand-maintained build +projects/scripts for Visual Studio, Xcode, and Autotools. While we +continue to provide them for convenience, they are not actively +maintained any more. We highly recommend that you follow the +instructions in the previous two sections to integrate Google Test +with your existing build system. + +If you still need to use the legacy build scripts, here's how: + +The msvc\ folder contains two solutions with Visual C++ projects. +Open the `gtest.sln` or `gtest-md.sln` file using Visual Studio, and you +are ready to build Google Test the same way you build any Visual +Studio project. Files that have names ending with -md use DLL +versions of Microsoft runtime libraries (the /MD or the /MDd compiler +option). Files without that suffix use static versions of the runtime +libraries (the /MT or the /MTd option). Please note that one must use +the same option to compile both gtest and the test code. If you use +Visual Studio 2005 or above, we recommend the -md version as /MD is +the default for new projects in these versions of Visual Studio. + +On Mac OS X, open the `gtest.xcodeproj` in the `xcode/` folder using +Xcode. Build the "gtest" target. The universal binary framework will +end up in your selected build directory (selected in the Xcode +"Preferences..." -> "Building" pane and defaults to xcode/build). +Alternatively, at the command line, enter: + + xcodebuild + +This will build the "Release" configuration of gtest.framework in your +default build location. See the "xcodebuild" man page for more +information about building different configurations and building in +different locations. + +If you wish to use the Google Test Xcode project with Xcode 4.x and +above, you need to either: + + * update the SDK configuration options in xcode/Config/General.xconfig. + Comment options `SDKROOT`, `MACOS_DEPLOYMENT_TARGET`, and `GCC_VERSION`. If + you choose this route you lose the ability to target earlier versions + of MacOS X. + * Install an SDK for an earlier version. This doesn't appear to be + supported by Apple, but has been reported to work + (http://stackoverflow.com/questions/5378518). + +### Tweaking Google Test ### + +Google Test can be used in diverse environments. The default +configuration may not work (or may not work well) out of the box in +some environments. However, you can easily tweak Google Test by +defining control macros on the compiler command line. Generally, +these macros are named like `GTEST_XYZ` and you define them to either 1 +or 0 to enable or disable a certain feature. + +We list the most frequently used macros below. For a complete list, +see file [include/gtest/internal/gtest-port.h](include/gtest/internal/gtest-port.h). + +### Choosing a TR1 Tuple Library ### + +Some Google Test features require the C++ Technical Report 1 (TR1) +tuple library, which is not yet available with all compilers. The +good news is that Google Test implements a subset of TR1 tuple that's +enough for its own need, and will automatically use this when the +compiler doesn't provide TR1 tuple. + +Usually you don't need to care about which tuple library Google Test +uses. However, if your project already uses TR1 tuple, you need to +tell Google Test to use the same TR1 tuple library the rest of your +project uses, or the two tuple implementations will clash. To do +that, add + + -DGTEST_USE_OWN_TR1_TUPLE=0 + +to the compiler flags while compiling Google Test and your tests. If +you want to force Google Test to use its own tuple library, just add + + -DGTEST_USE_OWN_TR1_TUPLE=1 + +to the compiler flags instead. + +If you don't want Google Test to use tuple at all, add + + -DGTEST_HAS_TR1_TUPLE=0 + +and all features using tuple will be disabled. + +### Multi-threaded Tests ### + +Google Test is thread-safe where the pthread library is available. +After `#include "gtest/gtest.h"`, you can check the `GTEST_IS_THREADSAFE` +macro to see whether this is the case (yes if the macro is `#defined` to +1, no if it's undefined.). + +If Google Test doesn't correctly detect whether pthread is available +in your environment, you can force it with + + -DGTEST_HAS_PTHREAD=1 + +or + + -DGTEST_HAS_PTHREAD=0 + +When Google Test uses pthread, you may need to add flags to your +compiler and/or linker to select the pthread library, or you'll get +link errors. If you use the CMake script or the deprecated Autotools +script, this is taken care of for you. If you use your own build +script, you'll need to read your compiler and linker's manual to +figure out what flags to add. + +### As a Shared Library (DLL) ### + +Google Test is compact, so most users can build and link it as a +static library for the simplicity. You can choose to use Google Test +as a shared library (known as a DLL on Windows) if you prefer. + +To compile *gtest* as a shared library, add + + -DGTEST_CREATE_SHARED_LIBRARY=1 + +to the compiler flags. You'll also need to tell the linker to produce +a shared library instead - consult your linker's manual for how to do +it. + +To compile your *tests* that use the gtest shared library, add + + -DGTEST_LINKED_AS_SHARED_LIBRARY=1 + +to the compiler flags. + +Note: while the above steps aren't technically necessary today when +using some compilers (e.g. GCC), they may become necessary in the +future, if we decide to improve the speed of loading the library (see + for details). Therefore you are +recommended to always add the above flags when using Google Test as a +shared library. Otherwise a future release of Google Test may break +your build script. + +### Avoiding Macro Name Clashes ### + +In C++, macros don't obey namespaces. Therefore two libraries that +both define a macro of the same name will clash if you `#include` both +definitions. In case a Google Test macro clashes with another +library, you can force Google Test to rename its macro to avoid the +conflict. + +Specifically, if both Google Test and some other code define macro +FOO, you can add + + -DGTEST_DONT_DEFINE_FOO=1 + +to the compiler flags to tell Google Test to change the macro's name +from `FOO` to `GTEST_FOO`. Currently `FOO` can be `FAIL`, `SUCCEED`, +or `TEST`. For example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll +need to write + + GTEST_TEST(SomeTest, DoesThis) { ... } + +instead of + + TEST(SomeTest, DoesThis) { ... } + +in order to define a test. + +## Developing Google Test ## + +This section discusses how to make your own changes to Google Test. + +### Testing Google Test Itself ### + +To make sure your changes work as intended and don't break existing +functionality, you'll want to compile and run Google Test's own tests. +For that you can use CMake: + + mkdir mybuild + cd mybuild + cmake -Dgtest_build_tests=ON ${GTEST_DIR} + +Make sure you have Python installed, as some of Google Test's tests +are written in Python. If the cmake command complains about not being +able to find Python (`Could NOT find PythonInterp (missing: +PYTHON_EXECUTABLE)`), try telling it explicitly where your Python +executable can be found: + + cmake -DPYTHON_EXECUTABLE=path/to/python -Dgtest_build_tests=ON ${GTEST_DIR} + +Next, you can build Google Test and all of its own tests. On \*nix, +this is usually done by 'make'. To run the tests, do + + make test + +All tests should pass. + +Normally you don't need to worry about regenerating the source files, +unless you need to modify them. In that case, you should modify the +corresponding .pump files instead and run the pump.py Python script to +regenerate them. You can find pump.py in the [scripts/](scripts/) directory. +Read the [Pump manual](docs/PumpManual.md) for how to use it. -- cgit v1.2.3