Github test-coverage workflow does not ignore an Rcpp auto-generated header file inst/include/<pkg_name>_RcppExports.h

[zhuxr11]

Hi, recently I exported some Rcpp functions from a package to R and cpp interfaces using // [[Rcpp:interfaces(r, cpp)]] attribute. When I pushed the changes to Github, the test-coverage workflow began to test coverage on an auto-generated file (by Rcpp) inst/include/<pkg_name>_RcppExports.h. In this file, there is an unnamed namespace that defined a function validateSignature() (example below), which seemed invisible outside the file and thus could not be tested (and thus could not be covered), decreasing code coverage from 100%. In the end, I added .covrignore file to manually disable code coverage on this file. I noticed that some auto-generated files are already ignored by covr including RcppExports.cpp, RcppExports.R and <pkg_name>.h. Should this auto-generated file inst/include/<pkg_name>_RcppExports.h also be ignored by default?

Here is an example with some auto-generated code not covered.