Nothing
test_that("is.difftime works as expected", {
ct_time <- as.POSIXct("2008-08-03 13:01:59", tz = "UTC")
lt_time <- as.POSIXlt("2009-08-03 13:01:59", tz = "UTC")
expect_true(!is.difftime(234))
expect_true(!is.difftime(ct_time))
expect_true(!is.difftime(lt_time))
expect_true(!is.difftime(Sys.Date()))
expect_true(!is.difftime(minutes(1)))
expect_true(!is.difftime(dminutes(1)))
expect_true(!is.difftime(interval(ct_time, lt_time)))
expect_true(is.difftime(make_difftime(1000)))
expect_true(is.difftime(ct_time - lt_time))
})
test_that("is.difftime handle vectors", {
expect_true(is.difftime(make_difftime(1:3)))
})
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