Проблема с связыванием файлов .cpp при запуске Pio Test с Googletest ⇐ C++

[Anonymous]

Нубской вопрос.
У меня есть простой проект PlatformIO Arduino со следующим деревом файлов:

Код: Выделить всё

project_root/
├── platformio.ini
├── src/
│   ├── Foo.cpp
│   └── Foo.h
│   └── main.cpp
├── test/
│   └── test_desktop/
│       └── bootstrap.cpp
│       └── foo_test.cpp
< /code>
// platformio.ini

[env:nanoatmega328new]
platform = atmelavr
board = nanoatmega328new
framework = arduino
test_ignore = test_desktop

[env:native]
platform = native
test_ignore = test_embedded
lib_compat_mode = off
lib_deps = google/googletest@^1.15.2
build_flags = -std=c++14
< /code>
// src/main.cpp
#include 
#include "Foo.h"

Foo foo;

void setup() {
Serial.begin(9600);
}

void loop() {
Serial.println(foo.bar());
}
< /code>
// src/Foo.h

#ifndef FOO_H
#define FOO_H

class Foo {
public:
int bar();
};

#endif //FOO_H

< /code>
// src/Foo.cpp
#include "Foo.h"

int Foo::bar() {
return 0;
}
< /code>
My goal is to be able to write unit tests using googletest and googlmock. My test setup is:
// test/test_desktop/bootstrap.cpp

#include 

int main(int argc, char **argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
< /code>
and the first test:
// test/test_desktop/foo_test.cpp

#include 
#include "Foo.h"

TEST(Foo, test_bar) {
Foo foo;
ASSERT_EQ(foo.bar(), 0);
}
< /code>
Then, when I run it with pio test

Я получаю ошибку с выводом:
Processing test_desktop in native environment
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
Building...
Undefined symbols for architecture arm64:
"Foo::bar()", referenced from:
Foo_test_bar_Test::TestBody() in foo_test.o
ld: symbol(s) not found for architecture arm64
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
*** [.pio/build/native/program] Error 1
Building stage has failed, see errors above. Use `pio test -vvv` option to enable verbose output.

< /code>
It seem like linker can't link ".h" and ".cpp" file.
Appreciate any help with that.

Подробнее здесь: https://stackoverflow.com/questions/793 ... googletest