Exclusions
covr supports a couple of different ways of excluding some or all of a file.
The line_exclusions argument to package_coverage() can be used
to exclude some or all of a file. This argument takes a list of filenames
or named ranges to exclude.
Alternatively function_exclusions can be used to exclude R functions
based on regular expression(s). For example print\\\.* can be used to
exclude all the print methods defined in a package from coverage.
In addition you can exclude lines from the coverage by putting special comments
in your source code. This can be done per line or by specifying a range.
The patterns used can be specified by the exclude_pattern, exclude_start,
exclude_end arguments to package_coverage() or by setting the global
options covr.exclude_pattern, covr.exclude_start, covr.exclude_end.
## Not run:
# exclude whole file of R/test.R
package_coverage(exclusions = "R/test.R")
# exclude lines 1 to 10 and 15 from R/test.R
package_coverage(line_exclusions = list("R/test.R" = c(1:10, 15)))
# exclude lines 1 to 10 from R/test.R, all of R/test2.R
package_coverage(line_exclusions = list("R/test.R" = 1:10, "R/test2.R"))
# exclude all print and format methods from the package.
package_coverage(function_exclusions = c("print\\.", "format\\."))
# single line exclusions
f1 <- function(x) {
x + 1 # nocov
}
# ranged exclusions
f2 <- function(x) { # nocov start
x + 2
} # nocov end
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.