R Under development (unstable) (2025-02-14 r87718 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(WMWssp)
> 
> test_check("WMWssp")
Simulation:

Wilcoxon-Mann-Whitney Sample Size Calculation
 
Summary
Call: eval
Type-I error (two-sided): 0.05
Power: 0.8

                                 Results
alpha (2-sided)                0.0500000
Power                          0.8000000
Simulated Power                0.9200000
Estimated relative effect p    0.3491124
N (total sample size needed) 111.3664650
t=n1/N                         0.4964905
n1 in Group 1                 55.2923889
n2 in Group 2                 56.0740762
N rounded for t = 1/2        112.0000000
N rounded                    113.0000000
n1 rounded                    56.0000000
n2 rounded                    57.0000000
Simulation:

[ FAIL 0 | WARN 0 | SKIP 0 | PASS 17 ]
> 
> proc.time()
   user  system elapsed 
   0.68    0.18    0.85