R Under development (unstable) (2023-11-01 r85459 ucrt) -- "Unsuffered Consequences"
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> library(lme4)
Loading required package: Matrix
> source(system.file("test-tools-1.R", package = "Matrix"), keep.source = FALSE)
Loading required package: tools
> ## N.B. is.all.equal4() and assert.EQ() use 'tol', not 'tolerance' 
> 
> 
> ## should be able to run any example with any bounds-constrained optimizer ...
> ##  Nelder_Mead, bobyqa built in; optimx/nlminb, optimx/L-BFGS-B
> ##  optimx/Rcgmin will require a bit more wrapping/interface work (requires gradient)
> 
> if (.Platform$OS.type != "windows") {
+ fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy)  ## Nelder_Mead
+ fm1B <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy,
+              control=lmerControl(optimizer="bobyqa"))
+ stopifnot(all.equal(fixef(fm1),fixef(fm1B)))
+ require(optimx)
+ lmerCtrl.optx <- function(method, ...)
+     lmerControl(optimizer="optimx", ..., optCtrl=list(method=method))
+ glmerCtrl.optx <- function(method, ...)
+     glmerControl(optimizer="optimx", ..., optCtrl=list(method=method))
+ 
+ (testLevel <- lme4:::testLevel())
+ 
+ ## FAILS on Windows (on r-forge only, not win-builder)... 'function is infeasible at initial parameters'
+ ## (can we test whether we are on r-forge??)
+ if (.Platform$OS.type != "windows") {
+     fm1C <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy,
+                  control=lmerCtrl.optx(method="nlminb"))
+     fm1D <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy,
+                  control=lmerCtrl.optx(method="L-BFGS-B"))
+     stopifnot(is.all.equal4(fixef(fm1),fixef(fm1B),fixef(fm1C),fixef(fm1D)))
+ 
+     fm1E <- update(fm1,control=lmerCtrl.optx(method=c("nlminb","L-BFGS-B")))
+     ## hack equivalence of call and optinfo
+     fm1E@call <- fm1C@call
+     fm1E@optinfo <- fm1C@optinfo
+     assert.EQ(fm1C,fm1E, tol=1e-5, giveRE=TRUE)# prints unless tolerance=0--equality
+ }
+ 
+ gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
+              data = cbpp, family = binomial,
+              control=glmerControl(tolPwrss=1e-13))
+ gm1B <- update(gm1, control=glmerControl  (tolPwrss=1e-13, optimizer="bobyqa"))
+ gm1C <- update(gm1, control=glmerCtrl.optx(tolPwrss=1e-13, method="nlminb"))
+ gm1D <- update(gm1, control=glmerCtrl.optx(tolPwrss=1e-13, method="L-BFGS-B"))
+ stopifnot(is.all.equal4(fixef(gm1),fixef(gm1B),fixef(gm1C),fixef(gm1D),
+                         tol=1e-5))
+ 
+ if (testLevel > 1) {
+     gm1E <- update(gm1, control=
+ 		   glmerCtrl.optx(tolPwrss=1e-13, method=c("nlminb","L-BFGS-B")))
+     ## hack equivalence of call and optinfo
+     gm1E@call <- gm1C@call
+     gm1E@optinfo <- gm1C@optinfo
+     assert.EQ(gm1E,gm1C, tol=1e-5, giveRE=TRUE)# prints unless tol=0--equality
+ }
+ } ## skip on windows (for speed)
> 
> proc.time()
   user  system elapsed 
   1.06    0.17    1.21