R Under development (unstable) (2024-02-28 r85999 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> source("incl/start.R")
> 
> getOption2 <- parallelly:::getOption2
> getEnvVar2 <- parallelly:::getEnvVar2
> 
> options(parallelly.some.option = NULL)
> options(parallelly.some.option = NULL)
> Sys.unsetenv("R_FUTURE_SOME_ENVVAR")
> Sys.unsetenv("R_PARALLELLY_SOME_ENVVAR")
> 
> 
> message("*** Options and environment variables ...")
*** Options and environment variables ...
> 
> showall <- function() {
+   utils::str(list(
+     future.some.setting       = getOption("future.some.setting", NULL),
+     parallelly.some.setting   = getOption("parallelly.some.setting", NULL),
+     R_FUTURE_SOME_SETTING     = Sys.getenv("R_FUTURE_SOME_SETTING", ""),
+     R_PARALLELLY_SOME_SETTING = Sys.getenv("R_PARALLELLY_SOME_SETTING", "")
+   ))
+ }
> 
> for (what in c("option", "envvar")) {
+   if (what == "option") {
+     setvalue <- function(name, value) {
+       name <- sprintf("%s.some.setting", tolower(name))
+       if (is.null(value)) {
+         args <- list(NULL)
+       } else {
+         args <- as.list(value)
+       }
+       names(args) <- name
+       do.call(options, args = args)
+       class(args) <- "option"
+       args
+     }
+   } else if (what == "envvar") {
+     setvalue <- function(name, value) {
+       name <- sprintf("R_%s_SOME_SETTING", toupper(name))
+       if (is.null(value)) {
+         Sys.unsetenv(name)
+         args <- list(NULL)
+         names(args) <- name
+       } else {
+         args <- as.list(value)
+         names(args) <- name
+         do.call(Sys.setenv, args = args)
+       }
+       class(args) <- "envvar"
+       args
+     }
+   }
+   
+   for (name in c("future", "parallelly")) {
+     for (value0 in list(NULL, TRUE)) {
+       args <- setvalue(name, value0)
+       stopifnot(inherits(args, what))
+       showall()
+       
+       if (is.null(value0)) {
+         message("- getOption2()")
+         value <- getOption2("future.some.setting", NA)
+         stopifnot(is.na(value))
+         value <- getOption2("parallelly.some.setting", NA)
+         stopifnot(is.na(value))
+         
+         message("- getEnvVar2()")
+         value <- getEnvVar2("R_FUTURE_SOME_ENVVAR", NA)
+         stopifnot(is.na(value))
+         value <- getEnvVar2("R_PARALLELLY_SOME_ENVVAR", NA)
+         stopifnot(is.na(value))
+       } else if (isTRUE(value0)) {
+         if (what == "option") {
+           message("- getOption2()")
+           value1 <- getOption2("future.some.setting", NA)
+           stopifnot(isTRUE(value1))
+           value2 <- getOption2("parallelly.some.setting", NA)
+           stopifnot(isTRUE(value2))
+         } else if (what == "envvar") {
+           message("- getEnvVar2()")
+           value1 <- getEnvVar2("R_FUTURE_SOME_SETTING", NA)
+           stopifnot(value1 == "TRUE")
+           value2 <- getEnvVar2("R_PARALLELLY_SOME_SETTING", NA)
+           stopifnot(value2 == "TRUE")
+         }
+         stopifnot(identical(value1, value2))
+       }
+ 
+       args <- setvalue(name, NULL)
+       stopifnot(inherits(args, what), is.null(args[[1]]))
+     } ## for (value ...)
+   } ## for (name ...)
+ } ## for (what ...)
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getOption2()
- getEnvVar2()
List of 4
 $ future.some.setting      : logi TRUE
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getOption2()
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getOption2()
- getEnvVar2()
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : logi TRUE
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getOption2()
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getOption2()
- getEnvVar2()
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr "TRUE"
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getEnvVar2()
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr ""
- getOption2()
- getEnvVar2()
List of 4
 $ future.some.setting      : NULL
 $ parallelly.some.setting  : NULL
 $ R_FUTURE_SOME_SETTING    : chr ""
 $ R_PARALLELLY_SOME_SETTING: chr "TRUE"
- getEnvVar2()
> 
> 
> message("*** Options and environment variables ... DONE")
*** Options and environment variables ... DONE
> 
> source("incl/end.R")
> 
> proc.time()
   user  system elapsed 
   0.23    0.04    0.28