Include GTest in builds

CMakeLists.txt

+cmake_minimum_required(VERSION 2.8.12)
+project(bpftrace)
+
+add_compile_options("-std=c++14")
+add_compile_options("-Wall")
+add_compile_options("-Wextra")
+add_compile_options("-Wundef")
+add_compile_options("-Wpointer-arith")
+add_compile_options("-Wcast-align")
+add_compile_options("-Wwrite-strings")
+add_compile_options("-Wcast-qual")
+add_compile_options("-Wswitch-default")
+add_compile_options("-Wswitch-enum")
+add_compile_options("-Wconversion")
+add_compile_options("-Wunreachable-code")
+add_compile_options("-Wformat=2")
+add_compile_options("-Wstrict-overflow=5")
+add_compile_options("-Wdisabled-optimization")
+add_compile_options("-pedantic")
+
+enable_testing()
+
+add_subdirectory(src)
+add_subdirectory(tests)

README.md

@@ -50,6 +50,8 @@ git clone https://github.com/ajor/bpftrace
 cd bpftrace
 mkdir build
 cd build
-cmake -DCMAKE_BUILD_TYPE=Debug ../src
+cmake -DCMAKE_BUILD_TYPE=Debug ../
 make
 ```
+
+The latest versions of BCC and Google Test will be downloaded on the first build. To update them later, the commands `make bcc-update` and `make gtest-update` can be run.

src/CMakeLists.txt

-cmake_minimum_required(VERSION 2.8.12)
-project(bpftrace)
-
-add_compile_options("-std=c++14")
-add_compile_options("-Wall")
-add_compile_options("-Wextra")
-add_compile_options("-Wundef")
-add_compile_options("-Wpointer-arith")
-add_compile_options("-Wcast-align")
-add_compile_options("-Wwrite-strings")
-add_compile_options("-Wcast-qual")
-add_compile_options("-Wswitch-default")
-add_compile_options("-Wswitch-enum")
-add_compile_options("-Wconversion")
-add_compile_options("-Wunreachable-code")
-add_compile_options("-Wformat=2")
-add_compile_options("-Wstrict-overflow=5")
-add_compile_options("-Wdisabled-optimization")
-add_compile_options("-pedantic")
-
 find_package(BISON REQUIRED)
 find_package(FLEX REQUIRED)
 find_package(LLVM REQUIRED CONFIG)

tests/CMakeLists.txt

+add_compile_options("-Wno-undef")
+add_compile_options("-Wno-switch-default")
+add_compile_options("-Wno-switch-enum")
+
+add_executable(bpftrace_test parser.cpp)
+
+find_package(Threads REQUIRED)
+
+include(ExternalProject)
+ExternalProject_Add(gtest
+  GIT_REPOSITORY https://github.com/google/googletest.git
+  STEP_TARGETS build update
+  EXCLUDE_FROM_ALL 1
+  UPDATE_DISCONNECTED 1
+)
+add_dependencies(bpftrace_test gtest-build)
+ExternalProject_Get_Property(gtest source_dir binary_dir)
+include_directories(${source_dir}/googletest/include)
+target_link_libraries(bpftrace_test ${binary_dir}/googlemock/gtest/libgtest.a)
+target_link_libraries(bpftrace_test ${binary_dir}/googlemock/gtest/libgtest_main.a)
+target_link_libraries(bpftrace_test ${CMAKE_THREAD_LIBS_INIT})
+
+add_test(NAME bpftrace_test COMMAND bpftrace_test)

tests/parser.cpp

+#include "gtest/gtest.h"
+
+TEST(test1, aaa)
+{
+}
+
+int main(int argc, char *argv[])
+{
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}