Missing dependencies for test coverage section

[PabRod]

Problem

The subsection about test coverage requires the installation of a few packages.

Solution

install.packages(c("covr", "DT", "htmltools"))

[bvreede]

In addition, the covr::report() function does not work for a lot of people; they get errors similar to:

Warning: package ‘mysterycoffee’ is in use and will not be installed
Error in file(con, "r") : cannot open the connection
In addition: Warning message:
In file(con, "r") :
  cannot open file 'C:/Users/UserName/AppData/Local/Temp/RtmpGiF8LO/R_LIBS35bc55736419/Hgear/R/mysterycoffee': No such file or directory

What seems to fix the issue is running devtools::build(). It is not clear to me exactly why.