Add gtests as submodule (#1)

.gitignore

@@ -30,3 +30,9 @@
 *.exe
 *.out
 *.app
+
+
+.cache
+.vscode
+build/
+*__pycache__/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "src/external/googletest"]
+	path = src/external/googletest
+	url = https://github.com/google/googletest.git

CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(image_sequence_localizer)
+
+include(GoogleTest)
+include(cmake/UpdateSubmodules.cmake)
+
+option(PACKAGE_TESTS "Build the tests" ON)
+if(PACKAGE_TESTS)
+    enable_testing()
+    add_subdirectory(src/external/googletest)
+endif()
+
+add_subdirectory(src)
+

cmake/UpdateSubmodules.cmake

@@ -0,0 +1,15 @@
+find_package(Git QUIET)
+if(GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
+# Update submodules as needed
+    option(UPDATE_SUBMODULES "Check submodules during build" ON)
+    if(UPDATE_SUBMODULES)
+        message(STATUS "Updating submodules")
+        execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive
+                        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                        RESULT_VARIABLE GIT_SUBMOD_RESULT)
+        if(NOT GIT_SUBMOD_RESULT EQUAL "0")
+            message(FATAL_ERROR "git submodule update --init --recursive failed with ${GIT_SUBMOD_RESULT}, please checkout submodules")
+        endif()
+        message(STATUS "All sobmodules updated")
+    endif()
+endif()

src/CMakeLists.txt

@@ -1,7 +1,3 @@
-cmake_minimum_required(VERSION 3.10)
-
-project(image_sequence_localizer)
-
 find_package(Protobuf REQUIRED)
 
 # TODO: is opencv really required?
@@ -16,7 +12,7 @@ target_compile_features(cxx_flags INTERFACE cxx_std_17)
 include_directories(${Protobuf_INCLUDE_DIRS})
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS localization_protos.proto)
-protobuf_generate_python(PROTO_PY localization_protos.proto PROTOC_OUT_DIR ${CMAKE_SOURCE_DIR}/python/protos)
+protobuf_generate_python(PROTO_PY localization_protos.proto PROTOC_OUT_DIR ${CMAKE_SOURCE_DIR}/src/python/protos)
 
 add_library(protos ${PROTO_SRCS} ${PROTO_HDRS})
 target_link_libraries(protos ${Protobuf_LIBRARIES})
@@ -26,4 +22,8 @@ add_subdirectory(localization)
 add_subdirectory(apps)
 
 # # Generate the python proto files
-add_custom_target(proto_python ALL DEPENDS ${PROTO_PY})
+add_custom_target(proto_python ALL DEPENDS ${PROTO_PY})
+
+if(PACKAGE_TESTS)
+    add_subdirectory(test)
+endif()

src/test/CMakeLists.txt

@@ -0,0 +1,6 @@
+set(TESTNAME test_${PROJECT_NAME})
+
+add_executable(${TESTNAME} dummy_test.cpp dummy_test_2.cpp)
+target_link_libraries(${TESTNAME} gtest gtest_main)
+
+gtest_discover_tests(${TESTNAME})

src/test/dummy_test.cpp

@@ -0,0 +1,3 @@
+#include <gtest/gtest.h>
+
+TEST(Dummy, Dummy) { SUCCEED(); }

src/test/dummy_test_2.cpp

@@ -0,0 +1,3 @@
+#include <gtest/gtest.h>
+
+TEST(Dummy2, Dummy) { FAIL(); }