R Under development (unstable) (2023-11-28 r85645 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(gam)
Loading required package: splines
Loading required package: foreach
Loaded gam 1.22-3

> 
> test_check("gam")
Start:  y ~ s(x, 6) + z; AIC= 43.7495 
Step:1 y ~ s(x, 6) ; AIC= 42.6681 
Testing fit1
Testing fit2
Testing fit3
Testing fit4
Testing fit5
Testing fit6
Testing sum1
Testing an1
Testing an2
Testing step1
[ FAIL 0 | WARN 1 | SKIP 0 | PASS 10 ]

[ FAIL 0 | WARN 1 | SKIP 0 | PASS 10 ]
> 
> proc.time()
   user  system elapsed 
   0.92    0.25    1.11