R Under development (unstable) (2024-02-05 r85863 ucrt) -- "Unsuffered Consequences"
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> library(pcalg)
> 
> ## Tests whether "intervention matrices" can correctly be mapped to a 
> ## targets/target index pair, and vice versa
> 
> nreps <- 30
> p <- 20
> n <- 200
> 
> for (i in 1:nreps) {
+   set.seed(i)
+   A <- matrix(as.logical(rbinom(n*p, 1, 0.01)), nrow = n, ncol = p)
+   
+   ## Testing conversion of matrix to list of targets
+   target.list <- mat2targets(A)
+   if (any(duplicated(target.list$targets)))
+     stop("Targets are not unique!")
+   for (j in 1:n)
+     if (!all.equal(which(A[j, ]), 
+         target.list$targets[[target.list$target.index[j]]]))
+       stop("Targets not correctly represented!")
+   
+   ## Test back-conversion
+   B <- targets2mat(p, target.list$targets, target.list$target.index)
+   if (!identical(A, B))
+     stop("Intervention matrix not correctly represented!")
+ }
> 
> 
> proc.time()
   user  system elapsed 
   1.12    0.12    1.25