Skip raster compression tests on old versions of WhiteboxTools

Author: brownag

tests/testthat/test-wbt.R

@@ -186,12 +186,14 @@ test_that("wbt utility functions [requires WhiteboxTools installed]", {
   expect_true(is.character(wbt_tool_help()))
 })
 
-test_that("wbt raster compression", {
+test_that("wbt raster compression (requires WhiteboxTools v2.1.0 or higher)", {
 
   skip_on_cran()
 
   skip_if_not(check_whitebox_binary())
 
+  skip_if_not(wbt_version() >= "2.1.0")
+  
   dem <- sample_dem_data()
 
   skip_if(dem == "")