问题
I would like to run my package unit tests during R CMD check, but skip tests that require an internet connection. By convention, all unit tests that require internet have the word network in their filename.
Hence my run-all.R contains:
library(testthat)
test_package("mypackage", filter="^((?!network).)*$")
However this gives an invalid regular expression error. How do I specify the filter argument such that it runs each unit test except the ones with the word network in them?
回答1:
Use the invert argument:
test_package("mypackage", filter="network", invert=TRUE)
The invert argument eventually gets forwarded to grepl via the ... argument via test_check -> run_tests -> test_dir -> etc. From ?test_dir:
...: Additional arguments passed to 'grepl' to control filtering.
来源：https://stackoverflow.com/questions/22675252/using-filter-argument-in-test-package-to-skip-tests