R Under development (unstable) (2024-09-17 r87161 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2024 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> # the testthat library executes test within the optmatch namespace,
> # so it can't detect if we forget to export methods
> # R CMD check tests, on the other hand, use the package externally
> 
> library(optmatch)
> 
> data(nuclearplants)
> 
> ### as.matrix
> 
> # sparse
> tmp <- match_on(pr ~ date + cost, data = nuclearplants, within = exactMatch(pr ~ pt, data = nuclearplants))
> 
> tmp.m <- as.matrix(tmp)
> 
> stopifnot(dim(tmp.m) == c(10,22))
> stopifnot(class(tmp.m)[1] == "matrix")
> 
> # dense
> tmp <- match_on(pr ~ date + cost, data = nuclearplants)
> 
> tmp.m <- as.matrix(tmp)
> 
> stopifnot(dim(tmp.m) == c(10,22))
> stopifnot(class(tmp.m)[1] == "matrix")
> 
> proc.time()
   user  system elapsed 
   0.78    0.03    0.79