R Under development (unstable) (2024-05-17 r86565 ucrt) -- "Unsuffered Consequences"
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> source(file.path("_helper", "init.R"))
> # - "int.pos" ------------------------------------------------------------------
> 
> unitizer:::is.int.pos.1L(c(1, 2, 3))  # FALSE
[1] FALSE
> unitizer:::is.int.pos.1L(1)
[1] TRUE
> unitizer:::is.int.pos.1L(1)
[1] TRUE
> unitizer:::is.int.pos.1L(-1)           # FALSE
[1] FALSE
> unitizer:::is.int.pos.1L(NA_integer_)  # FALSE
[1] FALSE
> unitizer:::is.int.pos.2L(1:2)
[1] TRUE
> unitizer:::is.int.pos.2L(c(1, 2))
[1] TRUE
> 
> # - "is.valid_two_arg" ---------------------------------------------------------
> 
> f1 <- function(x, y) NULL
> f2 <- function(...) NULL
> f3 <- function(x, ...) NULL
> f4 <- function(x, y, z) NULL
> f5 <- function(x, y, z = 3) NULL
> f6 <- function(x) NULL
> unitizer:::is.two_arg_fun(f1)
[1] TRUE
> unitizer:::is.two_arg_fun(f2)
[1] TRUE
> unitizer:::is.two_arg_fun(f3)
[1] TRUE
> unitizer:::is.two_arg_fun(f4)
[1] "cannot have any non-optional arguments other than first two"
> unitizer:::is.two_arg_fun(f5)
[1] TRUE
> unitizer:::is.two_arg_fun(f6)
[1] "does not have at least two arguments"
> unitizer:::is.two_arg_fun(1)
[1] "is not a function"
> 
> # - "is.valid_capt_setting" ----------------------------------------------------
> 
> capt.test <- unitizer:::is.valid_capt_setting(c(T, T))
| value must be logical(2L) containing TRUE 
| / FALSE and with names `c("output", "message")

> capt.test
[1] FALSE
> 
> proc.time()
   user  system elapsed 
   0.48    0.07    0.56