R Under development (unstable) (2026-02-16 r89426 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(Rpcop)
> 
> test_check("Rpcop")
Saving _problems/test-stress-hard-11.R
Saving _problems/test-stress-hard-11.R
Saving _problems/test-stress-hard-32.R
[ FAIL 3 | WARN 0 | SKIP 0 | PASS 45 ]

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('test-stress-hard.R:11:5'): hard backend stress cases remain finite and non-empty ──
Expected `inherits(out, "error")` to be FALSE.
Differences:
`actual`:   TRUE 
`expected`: FALSE

backend case: anisotropic_p3
── Failure ('test-stress-hard.R:11:5'): hard backend stress cases remain finite and non-empty ──
Expected `inherits(out, "error")` to be FALSE.
Differences:
`actual`:   TRUE 
`expected`: FALSE

backend case: clusters_outliers_p8
── Failure ('test-stress-hard.R:32:5'): hard wrapper stress cases return well-formed outputs ──
Expected `inherits(fit, "error")` to be FALSE.
Differences:
`actual`:   TRUE 
`expected`: FALSE

wrapper case: wrapper_anisotropic_p8

[ FAIL 3 | WARN 0 | SKIP 0 | PASS 45 ]
Error:
! Test failures.
Execution halted