Getting Started with Code Coverage in PlatformIO: A Beginner's Guide to Writing Effective Tests

Announcements
, ,
#1

In the world of software development, it’s essential to ensure that the code being written is not only functional but also maintainable and easily testable. One way to measure the effectiveness of testing is to analyze the code coverage to identify areas of the code that are not adequately tested. In this article, we’ll delve into the concept of source code coverage analysis, its importance, and some tools available for performing the analysis. Read more :point_right:

3 Likes
#4

Hello guys,

I’m trying to get code coverage working on my unit test project. I’m working on a mac M1 using clang and I’m struggling to find out how to compile it.
I added these flags to my platformio.ini test file :

-fprofile-instr-generate
-fcoverage-mapping
-fprofile-arcs
-ftest-coverage

But it sounds like my linker doesn’t really like it because it gives me errors like :

Undefined symbols for architecture x86_64:
  "___llvm_profile_runtime", referenced from:
      ___llvm_profile_runtime_user in unity_config.o
      ___llvm_profile_runtime_user in main.o
      ___llvm_profile_runtime_user in libluos_engine.a(unit_test.o)
      ___llvm_profile_runtime_user in libUnity.a(unity.o)
     (maybe you meant: ___llvm_profile_runtime_user)
  "_llvm_gcda_emit_arcs", referenced from:
      ___llvm_gcov_writeout in unity_config.o
      ___llvm_gcov_writeout in main.o
      ___llvm_gcov_writeout in libluos_engine.a(unit_test.o)
      ___llvm_gcov_writeout in libUnity.a(unity.o)
  "_llvm_gcda_emit_function", referenced from:
      ___llvm_gcov_writeout in unity_config.o
      ___llvm_gcov_writeout in main.o
      ___llvm_gcov_writeout in libluos_engine.a(unit_test.o)
      ___llvm_gcov_writeout in libUnity.a(unity.o)
  "_llvm_gcda_end_file", referenced from:
      ___llvm_gcov_writeout in unity_config.o
      ___llvm_gcov_writeout in main.o
      ___llvm_gcov_writeout in libluos_engine.a(unit_test.o)
      ___llvm_gcov_writeout in libUnity.a(unity.o)
  "_llvm_gcda_start_file", referenced from:
      ___llvm_gcov_writeout in unity_config.o
      ___llvm_gcov_writeout in main.o
      ___llvm_gcov_writeout in libluos_engine.a(unit_test.o)
      ___llvm_gcov_writeout in libUnity.a(unity.o)
  "_llvm_gcda_summary_info", referenced from:
      ___llvm_gcov_writeout in unity_config.o
      ___llvm_gcov_writeout in main.o
      ___llvm_gcov_writeout in libluos_engine.a(unit_test.o)
      ___llvm_gcov_writeout in libUnity.a(unity.o)
  "_llvm_gcov_init", referenced from:
      ___llvm_gcov_init in unity_config.o
      ___llvm_gcov_init in main.o
      ___llvm_gcov_init in libluos_engine.a(unit_test.o)
      ___llvm_gcov_init in libUnity.a(unity.o)
ld: symbol(s) not found for architecture x86_64

Do you guys have any idea to solve this?

#5

Related to Codecoverage running natively on OSX - #4 by softwaregravy ?

2 Likes
#6

Yes it is, thank you.