Running examples in 'fritools-Ex.R' failed
The error most likely occurred in:

> ### Name: bulk_write_csv
> ### Title: Bulk Write Comma Separated Files
> ### Aliases: bulk_write_csv
> 
> ### ** Examples
> 
> unlink(dir(tempdir(), full.names = TRUE))
> data(mtcars)
> mt_german <- mtcars
> rownames(mt_german)[1] <- "Mazda R\u00f64"
> names(mt_german)[1] <- "mg\u00dc"
> for (i in 1:10) {
+     f <- file.path(tempdir(), paste0("f", i, ".csv"))
+     write.csv(mtcars[1:5, TRUE], file = f)
+     f <- file.path(tempdir(), paste0("f", i, "_german.csv"))
+     write.csv2(mt_german[1:7, TRUE], file = f, fileEncoding = "Latin1")
+ }
> #% read
> bulk <- bulk_read_csv(tempdir())
> 
> print(mtime <- file.info(list.files(tempdir(), full.names = TRUE))["mtime"])
                                                                                       mtime
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f1.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f10.csv        2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f10_german.csv 2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f1_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f2.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f2_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f3.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f3_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f4.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f4_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f5.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f5_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f6.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f6_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f7.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f7_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f8.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f8_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f9.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f9_german.csv  2022-03-28 04:04:39
> bulk[["f2"]][3, 5] <- bulk[["f2"]][3, 5] + 2
> Sys.sleep(2) # make sure the mtimes would change
> result <- bulk_write_csv(bulk)
> print(new_times <- file.info(dir(tempdir(), full.names = TRUE))["mtime"])
                                                                                       mtime
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f1.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f10.csv        2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f10_german.csv 2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f1_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f2.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f2_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f3.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f3_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f4.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f4_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f5.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f5_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f6.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f6_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f7.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f7_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f8.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f8_german.csv  2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f9.csv         2022-03-28 04:04:39
C:\\r_packages\\pkgcheck\\CRAN\\fritools\\tmp\\RtmpozLpen/f9_german.csv  2022-03-28 04:04:39
> index_change <- grep("f2\\.csv", rownames(mtime))
> if (requireNamespace("digest", quietly = TRUE)) {
+     only_f2_changed <- all((mtime == new_times)[-c(index_change)]) &&
+         (mtime < new_times)[c(index_change)]
+     RUnit::checkTrue(only_f2_changed)
+ } else {
+     RUnit::checkTrue(all(mtime < new_times))
+ }
Error in loadNamespace(x) : there is no package called 'RUnit'
Calls: loadNamespace -> withRestarts -> withOneRestart -> doWithOneRestart
Execution halted