diff --git a/R/read_txt_Renishaw.R b/R/read_txt_Renishaw.R
index a565035..56bedb9 100644
--- a/R/read_txt_Renishaw.R
+++ b/R/read_txt_Renishaw.R
@@ -164,48 +164,47 @@ read_txt_Renishaw <- function(file = stop("file is required"),
 
 hySpc.testthat::test(read_txt_Renishaw) <- function() {
   context("read_txt_Renishaw")
+  path <- system.file("extdata", "txt.Renishaw", package = "hySpc.read.txt")
+  f_paracetamol <- paste0(path, "/paracetamol.txt")
+  f_laser <- paste0(path, "/laser.txt.gz")
+  f_chondro <- paste0(path, "/chondro.txt")
 
   test_that("single spectrum", {
-    skip("TODO: adapt to new package")
-    tmp <- read_txt_Renishaw("fileio/txt.Renishaw/paracetamol.txt", "spc")
+    tmp <- read_txt_Renishaw(f_paracetamol, "spc")
     expect_equal(dim(tmp), c(nrow = 1L, ncol = 2L, nwl = 4064L))
   })
 
   test_that("time series spectrum, gzipped", {
-    skip("TODO: adapt to new package")
-    tmp <- read_txt_Renishaw("fileio/txt.Renishaw/laser.txt.gz", "ts")
+    tmp <- read_txt_Renishaw(f_laser, "ts")
     expect_equal(dim(tmp), c(nrow = 84L, ncol = 3L, nwl = 140L))
     expect_equal(colnames(tmp), c("t", "spc", "filename"))
   })
 
   test_that("map (= default)", {
-    skip("TODO: adapt to new package")
-    tmp <- read_txt_Renishaw("fileio/txt.Renishaw/chondro.txt", "xyspc")
+    tmp <- read_txt_Renishaw(f_chondro, "xyspc")
     expect_equal(dim(tmp), c(nrow = 875L, ncol = 4L, nwl = 1272L))
     expect_equal(colnames(tmp), c("y", "x", "spc", "filename"))
 
-    tmp <- read_txt_Renishaw("fileio/txt.Renishaw/chondro.txt")
+    tmp <- read_txt_Renishaw(f_chondro)
     expect_equal(dim(tmp), c(nrow = 875L, ncol = 4L, nwl = 1272L))
     expect_equal(colnames(tmp), c("y", "x", "spc", "filename"))
   })
 
   test_that("chunked reading", {
-    skip("TODO: adapt to new package")
 
     ## error on too small chunk size
     expect_error(
-      read_txt_Renishaw("fileio/txt.Renishaw/chondro.txt", nlines = 10),
+      read_txt_Renishaw(f_chondro, nlines = 10),
       "Wavelengths do not correspond"
     )
 
-    tmp <- read_txt_Renishaw("fileio/txt.Renishaw/chondro.txt", nlines = 1e5)
+    tmp <- read_txt_Renishaw(f_chondro, nlines = 1e5)
     expect_equal(dim(tmp), c(nrow = 875L, ncol = 4L, nwl = 1272L))
   })
 
   test_that("compressed files", {
-    skip("TODO: adapt to new package")
 
-    files <- Sys.glob("fileio/txt.Renishaw/chondro.*")
+    files <- Sys.glob(paste0(path, "/chondro.*"))
     files <- grep("[.]zip", files, invert = TRUE, value = TRUE) # .zip is tested with read_zip_Renishaw
     for (f in files) {
       expect_equal(dim(read_txt_Renishaw(!!f)), c(nrow = 875L, ncol = 4L, nwl = 1272L))