R Under development (unstable) (2024-10-04 r87208 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(exampletestr)
> 
> get_os <- function() {
+   sysinf <- Sys.info()
+   if (!is.null(sysinf)) {
+     os <- sysinf["sysname"]
+     if (os == "Darwin") {
+       os <- "osx"
+     }
+   } else { ## mystery machine
+     os <- .Platform$OS.type
+     if (grepl("^darwin", R.version$os)) {
+       os <- "osx"
+     }
+     if (grepl("linux-gnu", R.version$os)) {
+       os <- "linux"
+     }
+   }
+   if (os == "osx") os <- "mac"
+   tolower(os)
+ }
> 
> if (get_os() != "mac" || Sys.getenv("NOT_CRAN") == "true") {
+   test_check("exampletestr")
+ }
[ FAIL 0 | WARN 6 | SKIP 1 | PASS 26 ]

══ Skipped tests (1) ═══════════════════════════════════════════════════════════
• On CRAN (1): 'test-example-extraction.R:15:3'

[ FAIL 0 | WARN 6 | SKIP 1 | PASS 26 ]
> 
> proc.time()
   user  system elapsed 
  10.31    2.29   12.07