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@ -2,43 +2,43 @@ |
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#### Setup |
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To build Google Test and your tests that use it, you need to tell your build |
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To build GoogleTest and your tests that use it, you need to tell your build |
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system where to find its headers and source files. The exact way to do it |
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depends on which build system you use, and is usually straightforward. |
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### Build with CMake |
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Google Test comes with a CMake build script |
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GoogleTest comes with a CMake build script |
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([CMakeLists.txt](https://github.com/google/googletest/blob/master/CMakeLists.txt)) |
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that can be used on a wide range of platforms ("C" stands for cross-platform.). |
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If you don't have CMake installed already, you can download it for free from |
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<http://www.cmake.org/>. |
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CMake works by generating native makefiles or build projects that can be used in |
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the compiler environment of your choice. You can either build Google Test as a |
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the compiler environment of your choice. You can either build GoogleTest as a |
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standalone project or it can be incorporated into an existing CMake build for |
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another project. |
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#### Standalone CMake Project |
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When building Google Test as a standalone project, the typical workflow starts |
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When building GoogleTest as a standalone project, the typical workflow starts |
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with |
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git clone https://github.com/google/googletest.git -b release-1.10.0 |
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cd googletest # Main directory of the cloned repository. |
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mkdir build # Create a directory to hold the build output. |
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cd build |
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cmake .. # Generate native build scripts for Google Test. |
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cmake .. # Generate native build scripts for GoogleTest. |
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The above command also includes Google Mock by default. And so, if you want |
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to build only Google Test, you should replace the last command |
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The above command also includes GoogleMock by default. And so, if you want |
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to build only GoogleTest, you should replace the last command |
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with |
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cmake .. -DBUILD_GMOCK=OFF |
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If you are on a \*nix system, you should now see a Makefile in the current |
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directory. Just type `make` to build Google Test. And then you can simply |
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install Google Test if you are a system administrator. |
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directory. Just type `make` to build GoogleTest. And then you can simply |
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install GoogleTest if you are a system administrator. |
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make |
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sudo make install # Install in /usr/local/ by default |
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@ -51,32 +51,32 @@ On Mac OS X with Xcode installed, a `.xcodeproj` file will be generated. |
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#### Incorporating Into An Existing CMake Project |
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If you want to use Google Test in a project which already uses CMake, |
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If you want to use GoogleTest in a project which already uses CMake, |
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the easiest way is to get installed libraries and headers. |
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* Import Google Test by using `find_package` (or `pkg_check_modules`). |
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* Import GoogleTest by using `find_package` (or `pkg_check_modules`). |
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For example, if `find_package(GTest CONFIG REQUIRED)` is succeed, |
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you can use the libraries as `GTest::gtest`, `GTest::gmock`. |
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And a more robust and flexible approach is to build Google Test as part of that |
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project directly. This is done by making the Google Test source code available |
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And a more robust and flexible approach is to build GoogleTest as part of that |
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project directly. This is done by making the GoogleTest source code available |
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to the main build and adding it using CMake's `add_subdirectory()` command. |
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This has the significant advantage that the same compiler and linker settings |
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are used between Google Test and the rest of your project, so issues associated |
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are used between GoogleTest and the rest of your project, so issues associated |
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with using incompatible libraries (eg debug/release), etc. are avoided. This is |
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particularly useful on Windows. Making Google Test's source code available to the |
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particularly useful on Windows. Making GoogleTest's source code available to the |
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main build can be done a few different ways: |
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* Download the Google Test source code manually and place it at a known |
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* Download the GoogleTest source code manually and place it at a known |
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location. This is the least flexible approach and can make it more difficult |
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to use with continuous integration systems, etc. |
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* Embed the Google Test source code as a direct copy in the main project's |
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* Embed the GoogleTest source code as a direct copy in the main project's |
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source tree. This is often the simplest approach, but is also the hardest to |
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keep up to date. Some organizations may not permit this method. |
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* Add Google Test as a git submodule or equivalent. This may not always be |
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* Add GoogleTest as a git submodule or equivalent. This may not always be |
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possible or appropriate. Git submodules, for example, have their own set of |
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advantages and drawbacks. |
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* Use CMake to download Google Test as part of the build's configure step. This |
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* Use CMake to download GoogleTest as part of the build's configure step. This |
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is just a little more complex, but doesn't have the limitations of the other |
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methods. |
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@ -154,12 +154,12 @@ also contains a link to a fully generalized implementation of the technique. |
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##### Visual Studio Dynamic vs Static Runtimes |
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By default, new Visual Studio projects link the C runtimes dynamically but |
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Google Test links them statically. This will generate an error that looks |
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GoogleTest links them statically. This will generate an error that looks |
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something like the following: gtest.lib(gtest-all.obj) : error LNK2038: mismatch |
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detected for 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value |
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'MDd_DynamicDebug' in main.obj |
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Google Test already has a CMake option for this: `gtest_force_shared_crt` |
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GoogleTest already has a CMake option for this: `gtest_force_shared_crt` |
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Enabling this option will make gtest link the runtimes dynamically too, and |
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match the project in which it is included. |
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@ -167,17 +167,17 @@ match the project in which it is included. |
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#### C++ Standard Version |
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An environment that supports C++11 is required in order to successfully build |
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Google Test. One way to ensure this is to specify the standard in the top-level |
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GoogleTest. One way to ensure this is to specify the standard in the top-level |
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project, for example by using the `set(CMAKE_CXX_STANDARD 11)` command. If this |
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is not feasible, for example in a C project using Google Test for validation, |
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is not feasible, for example in a C project using GoogleTest for validation, |
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then it can be specified by adding it to the options for cmake via the |
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`DCMAKE_CXX_FLAGS` option. |
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### Tweaking Google Test |
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### Tweaking GoogleTest |
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Google Test can be used in diverse environments. The default configuration may |
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GoogleTest can be used in diverse environments. The default configuration may |
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not work (or may not work well) out of the box in some environments. However, |
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you can easily tweak Google Test by defining control macros on the compiler |
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you can easily tweak GoogleTest by defining control macros on the compiler |
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command line. Generally, these macros are named like `GTEST_XYZ` and you define |
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them to either 1 or 0 to enable or disable a certain feature. |
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@ -186,12 +186,12 @@ We list the most frequently used macros below. For a complete list, see file |
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### Multi-threaded Tests |
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Google Test is thread-safe where the pthread library is available. After |
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GoogleTest is thread-safe where the pthread library is available. After |
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`#include "gtest/gtest.h"`, you can check the |
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`GTEST_IS_THREADSAFE` macro to see whether this is the case (yes if the macro is |
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`#defined` to 1, no if it's undefined.). |
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If Google Test doesn't correctly detect whether pthread is available in your |
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If GoogleTest doesn't correctly detect whether pthread is available in your |
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environment, you can force it with |
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-DGTEST_HAS_PTHREAD=1 |
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@ -200,7 +200,7 @@ or |
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-DGTEST_HAS_PTHREAD=0 |
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When Google Test uses pthread, you may need to add flags to your compiler and/or |
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When GoogleTest uses pthread, you may need to add flags to your compiler and/or |
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linker to select the pthread library, or you'll get link errors. If you use the |
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CMake script, this is taken care of for you. If you use your own build script, |
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you'll need to read your compiler and linker's manual to figure out what flags |
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@ -208,8 +208,8 @@ to add. |
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### As a Shared Library (DLL) |
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Google Test is compact, so most users can build and link it as a static library |
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for the simplicity. You can choose to use Google Test as a shared library (known |
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GoogleTest is compact, so most users can build and link it as a static library |
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for the simplicity. You can choose to use GoogleTest as a shared library (known |
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as a DLL on Windows) if you prefer. |
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To compile *gtest* as a shared library, add |
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@ -229,22 +229,22 @@ Note: while the above steps aren't technically necessary today when using some |
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compilers (e.g. GCC), they may become necessary in the future, if we decide to |
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improve the speed of loading the library (see |
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<http://gcc.gnu.org/wiki/Visibility> for details). Therefore you are recommended |
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to always add the above flags when using Google Test as a shared library. |
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Otherwise a future release of Google Test may break your build script. |
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to always add the above flags when using GoogleTest as a shared library. |
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Otherwise a future release of GoogleTest may break your build script. |
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### Avoiding Macro Name Clashes |
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In C++, macros don't obey namespaces. Therefore two libraries that both define a |
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macro of the same name will clash if you `#include` both definitions. In case a |
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Google Test macro clashes with another library, you can force Google Test to |
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GoogleTest macro clashes with another library, you can force GoogleTest to |
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rename its macro to avoid the conflict. |
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Specifically, if both Google Test and some other code define macro FOO, you can |
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Specifically, if both GoogleTest and some other code define macro FOO, you can |
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add |
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-DGTEST_DONT_DEFINE_FOO=1 |
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to the compiler flags to tell Google Test to change the macro's name from `FOO` |
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to the compiler flags to tell GoogleTest to change the macro's name from `FOO` |
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to `GTEST_FOO`. Currently `FOO` can be `FAIL`, `SUCCEED`, or `TEST`. For |
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example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write |
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