R Under development (unstable) (2024-05-23 r86608 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> library(testthat)
> library(DGP4LCF)
> 
> test_check("DGP4LCF")
Error in `test_dir()`:
! No test files found
Backtrace:
    ▆
 1. └─testthat::test_check("DGP4LCF")
 2.   └─testthat::test_dir("testthat", package = package, reporter = reporter, ..., load_package = "installed")
 3.     └─rlang::abort("No test files found")
Execution halted