R Under development (unstable) (2023-12-15 r85690 ucrt) -- "Unsuffered Consequences"
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> #  File tests/requireNamespaceTest.R in package ergm, part of the
> #  Statnet suite of packages for network analysis, https://statnet.org .
> #
> #  This software is distributed under the GPL-3 license.  It is free,
> #  open source, and has the attribution requirements (GPL Section 7) at
> #  https://statnet.org/attribution .
> #
> #  Copyright 2003-2023 Statnet Commons
> ################################################################################
> library(network)

'network' 1.18.2 (2023-12-04), part of the Statnet Project
* 'news(package="network")' for changes since last version
* 'citation("network")' for citation information
* 'https://statnet.org' for help, support, and other information

> data(flo)
> 
> # Also, while we are at it, test the options setting in .onLoad().
> options(ergm.eval.loglik=FALSE) # .onLoad() should not clobber this.
> 
> requireNamespace('ergm') # Load the namespace, but don't attach the package.
Loading required namespace: ergm
> 
> # Check that options are either set to default or preserved.
> stopifnot(getOption("ergm.eval.loglik")==FALSE)
> stopifnot(getOption("ergm.loglik.warn_dyads")==TRUE)
> 
> # run a summary
> ergm::summary_formula(as.network(flo)~density)
  density 
0.1666667 
> 
> # try a user-defined ergm term
> InitErgmTerm.myedges<-ergm:::InitErgmTerm.edges
> ergm::summary_formula(as.network(flo)~myedges)
edges 
   40 
> 
> # actually run ergm()
> data(sampson, package="ergm")
> fit <- ergm::ergm(samplike~edges)
Starting maximum pseudolikelihood estimation (MPLE):
Obtaining the responsible dyads.
Evaluating the predictor and response matrix.
Maximizing the pseudolikelihood.
Finished MPLE.
> stopifnot(isTRUE(all.equal(-log(1/(network.edgecount(samplike)/network.dyadcount(samplike))-1), coef(fit), check.attributes=FALSE)))
> 
> library(ergm) # Now, attach the package.

'ergm' 4.6.0 (2023-12-17), part of the Statnet Project
* 'news(package="ergm")' for changes since last version
* 'citation("ergm")' for citation information
* 'https://statnet.org' for help, support, and other information

'ergm' 4 is a major update that introduces some backwards-incompatible
changes. Please type 'news(package="ergm")' for a list of major
changes.

> # Check that options are either set to default or preserved.
> stopifnot(getOption("ergm.eval.loglik")==FALSE)
> stopifnot(getOption("ergm.loglik.warn_dyads")==TRUE)
> 
> proc.time()
   user  system elapsed 
   2.07    0.10    2.17