R covr package does not work

Question

I try to test code coverage of my R package. However, after Travis-CI build succeeds, it shows an error message that the R package I test does not contain covr package as follow: Error: ‘/home/travis/build/tzuliu/ooc’ does not contain a package! Execution halted

I have tried several instructions, such as this instruction or this instruction. However, it still fails.

My Travis yml file is as follows:

sudo: false
language: r
cache: packages
install:
 - Rscript -e 'install.packages(c("devtools","roxygen2","testthat"));devtools::install_deps("ooc")'
script:
 - Rscript -e 'devtools::check("ooc")'
r_packages:
 - covr  
r_github_packages:
 - r-lib/covr
after_success:
 - Rscript -e 'covr::codecov()'

Can anybody help identify where the issue is?

Note: The system is OSX and I have followed the instruction to revise DESCRIPTION .

Answer 1

Replace the last line with this

- Rscript -e 'covr::codecov(<path to the R-package>)'