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authorBradley Lowekamp <blowekamp@mail.nih.gov>2017-02-06 16:14:16 (GMT)
committerBrad King <brad.king@kitware.com>2017-02-07 16:24:18 (GMT)
commit9837ed96992a0a5e151c4cb5d4cbe6c7890d7db4 (patch)
treeb16c47f075966160e135b4acbeb8a77001217513 /Modules/GoogleTest.cmake
parentfddc01bab3352d12c0eba1ff781b359a7dec529c (diff)
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GoogleTest: Add module to contain gtest_add_tests independently
Extract the `gtest_add_tests` macro from `FindGTest` into a separate module. GTest or GoogleTest can be used by a project in a several different ways, including installed libraries in the system, from an ExternalProject, or adding the GTest source directory as a sub directory of the project. As not all of these uses are supported by the FindGTest module the useful `gtest_add_tests` macro is separated to easily enable reuse. Issue: #14151
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diff --git a/Modules/GoogleTest.cmake b/Modules/GoogleTest.cmake
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+# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+GoogleTest
+----------
+
+This module defines functions to help use the Google Test infrastructure.
+
+.. command:: gtest_add_tests
+
+ Automatically add tests with CTest by scanning source code for Google test
+ macros.
+
+ ::
+
+ gtest_add_tests(<exe> <args> <files>...)
+
+ ``<exe>``
+ The path to the test executable.
+ ``<args>``
+ A ;-list of extra arguments to be passed to executable. The entire
+ list must be passed as a single argument. Enclose it in quotes,
+ or pass ``""`` for no arguments.
+ ``<files>...``
+ A list of source files to search for tests and test fixtures.
+ Alternatively, use ``AUTO`` to specify that ``<exe>`` is the name
+ of a CMake executable target whose sources should be scanned.
+
+Example
+^^^^^^^
+
+.. code-block:: cmake
+
+ include(GoogleTest)
+ set(FooTestArgs --foo 1 --bar 2)
+ add_executable(FooTest FooUnitTest.cc)
+ gtest_add_tests(FooTest "${FooTestArgs}" AUTO)
+
+#]=======================================================================]
+
+function(gtest_add_tests executable extra_args)
+ if(NOT ARGN)
+ message(FATAL_ERROR "Missing ARGN: Read the documentation for GTEST_ADD_TESTS")
+ endif()
+ if(ARGN STREQUAL "AUTO")
+ # obtain sources used for building that executable
+ get_property(ARGN TARGET ${executable} PROPERTY SOURCES)
+ endif()
+ set(gtest_case_name_regex ".*\\( *([A-Za-z_0-9]+) *, *([A-Za-z_0-9]+) *\\).*")
+ set(gtest_test_type_regex "(TYPED_TEST|TEST_?[FP]?)")
+ foreach(source ${ARGN})
+ set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${source})
+ file(READ "${source}" contents)
+ string(REGEX MATCHALL "${gtest_test_type_regex} *\\(([A-Za-z_0-9 ,]+)\\)" found_tests ${contents})
+ foreach(hit ${found_tests})
+ string(REGEX MATCH "${gtest_test_type_regex}" test_type ${hit})
+
+ # Parameterized tests have a different signature for the filter
+ if("x${test_type}" STREQUAL "xTEST_P")
+ string(REGEX REPLACE ${gtest_case_name_regex} "*/\\1.\\2/*" test_name ${hit})
+ elseif("x${test_type}" STREQUAL "xTEST_F" OR "x${test_type}" STREQUAL "xTEST")
+ string(REGEX REPLACE ${gtest_case_name_regex} "\\1.\\2" test_name ${hit})
+ elseif("x${test_type}" STREQUAL "xTYPED_TEST")
+ string(REGEX REPLACE ${gtest_case_name_regex} "\\1/*.\\2" test_name ${hit})
+ else()
+ message(WARNING "Could not parse GTest ${hit} for adding to CTest.")
+ continue()
+ endif()
+ add_test(NAME ${test_name} COMMAND ${executable} --gtest_filter=${test_name} ${extra_args})
+ endforeach()
+ endforeach()
+endfunction()