reduce notifications by reducing invalid tests

[shenxianpeng]

I think only these files and paths need to trigger a self test action. fixup #212

paths: - 'action.yml' - 'requirements.txt' - 'docs/examples/demo/**' - '.github/workflows/self-test.yml'

[github-actions]

Cpp-Linter Report ⚠️

Some files did not pass the configured checks!

clang-format reports: 2 file(s) not formatted

• docs/examples/demo/demo.cpp
• docs/examples/demo/demo.hpp

clang-tidy reports: 7 concern(s)

• docs/examples/demo/demo.cpp:3:10: warning: [modernize-deprecated-headers]

  inclusion of deprecated C++ header 'stdio.h'; consider using 'cstdio' instead

  #include <stdio.h> ^~~~~~~~~ <cstdio>

• docs/examples/demo/demo.cpp:8:5: warning: [modernize-use-trailing-return-type]

  use a trailing return type for this function

  int main(){ ~~~ ^ auto -> int

• docs/examples/demo/demo.cpp:10:13: warning: [readability-braces-around-statements]

  statement should be inside braces

   for (;;) break; ^ {

• docs/examples/demo/demo.cpp:13:5: warning: [cppcoreguidelines-pro-type-vararg]

  do not call c-style vararg functions

   printf("Hello world!\n"); ^

• docs/examples/demo/demo.hpp:6:11: warning: [modernize-use-default-member-init]

  use default member initializer for 'useless'

   char* useless; ^ {"\0"}

• docs/examples/demo/demo.hpp:7:9: warning: [modernize-use-default-member-init]

  use default member initializer for 'numb'

   int numb; ^ {0}

• docs/examples/demo/demo.hpp:11:11: warning: [modernize-use-trailing-return-type]

  use a trailing return type for this function

   void *not_useful(char *str){useless = str;} ~~~~~~^ auto -> void *

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[2bndy5]

Nice!