message("TESTING: trim()...")
library("R.oo")
x <- character(0L)
y <- trim(x)
print(y)
stopifnot(identical(y, x))
x <- "Hello world!"
y <- trim(x)
print(y)
stopifnot(identical(y, x))
x <- " \tHello world!\n "
y <- trim(x)
print(y)
stopifnot(identical(y, "Hello world!"))
x <- c(" \tHello", "world!")
y <- trim(x)
print(y)
stopifnot(identical(y, c("Hello", "world!")))
message("TESTING: trim()...DONE")
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