tests/testthat/test-install.R

In installr: Using R to Install Stuff on Windows OS (Such As: R, 'Rtools', 'RStudio', 'Git', and More!)

context("Test install.* functions")

if(is.windows()) {
   test_that("install.URL errors on multiple exe URLs", {
      expect_error(install.URL(c("https://dummy.url1", "https://dummy.url1")), "exe_URL is not a single URL")
   })
}