R Under development (unstable) (2025-06-05 r88281 ucrt) -- "Unsuffered Consequences"
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> source("incl/start.R")
Loading required package: parallelly
Loading required package: future
> 
> message("*** Futures - lazy ...")
*** Futures - lazy ...
> 
> strategies <- c("batchtools_local")
> 
> ## CRAN processing times:
> ## On Windows 32-bit, don't run these tests
> if (!fullTest && isWin32) strategies <- character(0L)
> 
> for (strategy in strategies) {
+   mprintf("- plan('%s') ...\n", strategy)
+   plan(strategy)
+ 
+   a <- 42
+   f <- future(2 * a, lazy = TRUE)
+   a <- 21
+   ## In future (> 1.14.0), resolved() will launch lazy future,
+   ## which means for some backends (e.g. sequential) this means
+   ## that resolved() might end up returning TRUE.
+   f <- resolve(f)
+   stopifnot(resolved(f))
+   v <- value(f)
+   stopifnot(v == 84)
+ 
+   a <- 42
+   v %<-% { 2 * a } %lazy% TRUE
+   a <- 21
+   f <- futureOf(v)  
+   ## In future (> 1.14.0), resolved() will launch lazy future,
+   ## which means for some backends (e.g. sequential) this means
+   ## that resolved() might end up returning TRUE.
+   f <- resolve(f)
+   stopifnot(resolved(f))
+   stopifnot(v == 84)
+ 
+   mprintf("- plan('%s') ... DONE\n", strategy)
+ } ## for (strategy ...)
- plan('batchtools_local') ...
[04:38:15.892] Launched future #1
[04:38:17.230] Launched future #1
- plan('batchtools_local') ... DONE
> 
> message("*** Futures - lazy ... DONE")
*** Futures - lazy ... DONE
> 
> source("incl/end.R")
> 
> proc.time()
   user  system elapsed 
   1.48    0.28    3.96