## Regression tests for R >= 3.0.0

pdf("reg-tests-1c.pdf", encoding = "ISOLatin1.enc")

## mapply with classed objects with length method
## was not documented to work in 2.x.y
setClass("A", representation(aa = "integer"))
a <- new("A", aa = 101:106)
setMethod("length", "A", function(x) length(x@aa))
setMethod("[[", "A", function(x, i, j, ...) x@aa[[i]])
(z <- mapply(function(x, y) {x * y}, a, rep(1:3, 2)))
stopifnot(z == c(101, 204, 309, 104, 210, 318))
## reported as a bug (which it was not) by H. Pages in
## https://stat.ethz.ch/pipermail/r-devel/2012-November/065229.html

## recyling in split()
## https://stat.ethz.ch/pipermail/r-devel/2013-January/065700.html
x <- 1:6
y <- split(x, 1:2)
class(x) <- "A"
yy <- split(x, 1:2)
stopifnot(identical(y, yy))
## were different in R < 3.0.0


## dates with fractional seconds after 2038 (PR#15200)
## Extremely speculative!
z <- as.POSIXct(2^31+c(0.4, 0.8), origin=ISOdatetime(1970,1,1,0,0,0,tz="GMT"))
zz <- format(z)
stopifnot(zz[1] == zz[2])
## printed form rounded not truncated in R < 3.0.0