R Under development (unstable) (2025-08-19 r88650 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(tensorflow)
> library(tfdatasets)

Attaching package: 'tfdatasets'

The following object is masked from 'package:testthat':

    matches

> 
> if (identical(Sys.getenv("NOT_CRAN"), "true")) {
+   reticulate::py_require(
+     if (Sys.info()[["sysname"]] == "Linux") "tensorflow-cpu" else "tensorflow"
+   )
+   test_check("tfdatasets")
+ }
> 
> proc.time()
   user  system elapsed 
   1.60    0.31    1.90