R Under development (unstable) (2024-02-11 r85891 ucrt) -- "Unsuffered Consequences"
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> #### Compare our dsep() with  dSep() from package "ggm" :
> library(pcalg)
> 
> set.seed(22)
> p <- 8
> nreps <- 10
> ok <- rep(FALSE,nreps)
> for (i in 1:nreps) {
+   myDAG <- randomDAG(p, prob = 0.3)
+   amat <- as(myDAG,"matrix")
+   amat[amat!=0] <- 1
+ 
+   x <- sample(1:p,1)
+   y <- sample(setdiff(1:p,x),1)
+   S <- sample(setdiff(1:p,c(x,y)),sample(1:5,1))
+ 
+   dsepOld <- ggm::dSep(amat,as.character(x),as.character(y),as.character(S))
+   dsepRes <- dsep	   (as.character(x),as.character(y),as.character(S),
+ 			    myDAG)
+   ok[i] <- (dsepRes == dsepOld)
+ }
> 
> if (!all(ok)) stop("Test dsep wrong: dsep oracle made a mistake!")
> 
> #### Test with a graph that is NOT top. sorted (need not be)
> amat <- rbind(c(0,1,1,1,0,1,0),
+               c(0,0,0,0,0,0,0),
+               c(0,1,0,1,0,0,0),
+               c(0,0,0,0,0,0,0),
+               c(1,0,1,0,0,1,0),
+               c(0,0,0,0,0,0,0),
+               c(1,0,0,0,1,0,0))
>                
> colnames(amat) <- rownames(amat) <- as.character(1:7)
> g <- as(amat,"graphNEL")
> 
> ok <- rep(FALSE, 2)
> ok[1] <- ( dsep("7","2", c("1","5"),g) == TRUE ) ## should be TRUE
> ok[2] <- ( dsep("7","2", c("3","5"),g) == FALSE ) ## should be FALSE
> 
> if (!all(ok)) stop("Test dsep wrong: dsep oracle made a mistake!")
> 
> proc.time()
   user  system elapsed 
   1.67    0.25    1.93