R Under development (unstable) (2024-02-11 r85891 ucrt) -- "Unsuffered Consequences"
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> library(pcalg)
> 
> p <- 10
> reps <- 10
> set.seed(21)
> res <- logical(reps)
> for (i in 1:reps) {
+   amat <- matrix(sample(c(0,1),p*p,replace=TRUE),p,p)
+   diag(amat) <- 0
+   skelT <- amat+t(amat)
+   skelT[skelT != 0] <- 1
+ 
+   ## same skeleton?
+   my.dag <- amat2dag(amat)
+   skelDAG <- my.dag+t(my.dag)
+   res1 <- all(skelDAG == skelT)
+ 
+   ## acyclic?
+   res2 <- ggm::isAcyclic(my.dag)
+ 
+   res[i] <- res1 & res2
+ }
> 
> if(!all(res)) {
+   stop("Test amat2dag: Problem")
+ }
> 
> proc.time()
   user  system elapsed 
   1.29    0.31    1.54