R Under development (unstable) (2024-01-23 r85822 ucrt) -- "Unsuffered Consequences"
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> message("TESTING: Object...")
TESTING: Object...
> 
> library("R.oo")
Loading required package: R.methodsS3
R.methodsS3 v1.8.2 (2022-06-13 22:00:14 UTC) successfully loaded. See ?R.methodsS3 for help.
R.oo v1.26.0 successfully loaded. See ?R.oo for help.

Attaching package: 'R.oo'

The following object is masked from 'package:R.methodsS3':

    throw

The following objects are masked from 'package:methods':

    getClasses, getMethods

The following objects are masked from 'package:base':

    attach, detach, load, save

> 
> obj <- Object()
> print(obj)
[1] "Object: 0x00000289dc866d80"
> 
> obj <- Object(42L)
> print(obj)
[1] "Object: 0x00000289dc89f140"
> stopifnot(obj == 42L)
> 
> obj$a <- 1:99
> print(obj)
[1] "Object: 0x00000289dc89f140"
> 
> fields <- getFields(obj)
> print(fields)
[1] "a"
> 
> hasA <- hasField(obj, "a")
> print(hasA)
[1] TRUE
> stopifnot(hasA)
> 
> value <- obj$a
> str(value)
 int [1:99] 1 2 3 4 5 6 7 8 9 10 ...
> stopifnot(identical(value, 1:99))
> 
> obj$a <- 1:100
> print(obj)
[1] "Object: 0x00000289dc89f140"
> 
> value <- obj[["a"]]
> str(value)
 int [1:100] 1 2 3 4 5 6 7 8 9 10 ...
> stopifnot(identical(value, 1:100))
> 
> obj[["a"]] <- 1:101
> print(obj)
[1] "Object: 0x00000289dc89f140"
> 
> value <- obj[["a"]]
> str(value)
 int [1:101] 1 2 3 4 5 6 7 8 9 10 ...
> stopifnot(identical(value, 1:101))
> 
> size <- objectSize(obj)
> print(size)
760 bytes
> 
> ref <- isReferable(obj)
> print(ref)
[1] TRUE
> stopifnot(isTRUE(ref))
> 
> time <- getInstantiationTime(obj)
> print(time)
NULL
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Attach and detach
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> res <- attach(obj)
> print(res)
[1] TRUE
> stopifnot(exists("a", mode="integer"))
> str(a)
 int [1:101] 1 2 3 4 5 6 7 8 9 10 ...
> 
> ## Object already attached
> res <- tryCatch(attach(obj), warning=function(w) w)
> stopifnot(inherits(res, "warning"))
> 
> res <- detach(obj)
> print(res)
[1] TRUE
> 
> ## Object already detached
> res <- tryCatch(detach(obj), warning=function(w) w)
> stopifnot(inherits(res, "warning"))
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Save and load
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> obj <- Object()
> obj$a <- 1
> obj$b <- 2
> pathnameT <- tempfile()
> save(obj, file=pathnameT)
> 
> obj2 <- Object$load(pathnameT)
> stopifnot(all.equal(getFields(obj2), getFields(obj)))
> for (key in getFields(obj)) {
+   stopifnot(identical(obj2[[key]], obj[[key]]))
+ }
> 
> file.remove(pathnameT)
[1] TRUE
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Class
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> obj2 <- newInstance(obj, 43L)
> print(obj2)
[1] "Object: 0x00000289db72f450"
> stopifnot(obj2 == 43L)
> 
> 
> hash <- hashCode(obj)
> print(hash)
[1] 2.791095e+12
> stopifnot(length(hash) == 1L)
> 
> neq <- equals(obj, 1)
> print(neq)
[1] FALSE
> stopifnot(!neq)
> 
> eq <- equals(obj, obj)
> print(eq)
[1] TRUE
> stopifnot(eq)
> 
> obj3 <- clone(obj)
> print(obj3)
[1] "Object: 0x00000289db7a9370"
> stopifnot(!identical(obj3, obj))
> stopifnot(all.equal(obj3, obj))
> 
> 
> message("TESTING: Object...DONE")
TESTING: Object...DONE
> 
> proc.time()
   user  system elapsed 
   0.25    0.18    0.36