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91 lines
2.3 KiB
R
91 lines
2.3 KiB
R
context("utils")
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test_that("Private randomness works at startup", {
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if (exists(".Random.seed", envir = .GlobalEnv))
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rm(".Random.seed", envir = .GlobalEnv)
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.globals$ownSeed <- NULL
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# Just make sure this doesn't blow up
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createUniqueId(4)
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})
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test_that("Setting process-wide seed doesn't affect private randomness", {
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set.seed(0)
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id1 <- createUniqueId(4)
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set.seed(0)
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id2 <- createUniqueId(4)
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expect_false(identical(id1, id2))
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})
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test_that("Resetting private seed doesn't result in dupes", {
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.globals$ownSeed <- NULL
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id3 <- createUniqueId(4)
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# Make sure we let enough time pass that reinitializing the seed is
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# going to result in a different value. This is especially required
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# on Windows.
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Sys.sleep(1)
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set.seed(0)
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.globals$ownSeed <- NULL
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id4 <- createUniqueId(4)
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expect_false(identical(id3, id4))
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})
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test_that("Clearing process-wide seed doesn't affect private randomness", {
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set.seed(NULL)
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id5 <- createUniqueId(4)
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set.seed(NULL)
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id6 <- createUniqueId(4)
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expect_false(identical(id5, id6))
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})
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test_that("Setting the private seed explicitly results in identical values", {
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set.seed(0)
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.globals$ownSeed <- .Random.seed
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id7 <- createUniqueId(4)
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set.seed(0)
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.globals$ownSeed <- .Random.seed
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id8 <- createUniqueId(4)
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expect_identical(id7, id8)
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})
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test_that("need() works as expected", {
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# These are all falsy
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expect_false(need(FALSE, FALSE))
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expect_false(need(NULL, FALSE))
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expect_false(need("", FALSE))
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expect_false(need(character(0), FALSE))
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expect_false(need(logical(0), FALSE))
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expect_false(need(numeric(0), FALSE))
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expect_false(need(integer(0), FALSE))
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expect_false(need(complex(0), FALSE))
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expect_false(need(matrix(), FALSE))
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expect_false(need(NA, FALSE))
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expect_false(need(NA_integer_, FALSE))
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expect_false(need(NA_real_, FALSE))
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expect_false(need(NA_complex_, FALSE))
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expect_false(need(NA_character_, FALSE))
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expect_false(need(c(NA, NA, FALSE), FALSE))
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expect_false(need(c(FALSE), FALSE))
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expect_false(need(try(stop("boom"), silent = TRUE), FALSE))
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# These are all truthy
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expect_null(need(0, FALSE))
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expect_null(need(1:10, FALSE))
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expect_null(need(LETTERS, FALSE))
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expect_null(need("NA", FALSE))
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expect_null(need(TRUE, FALSE))
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expect_null(need(c(NA, NA, TRUE), FALSE))
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expect_null(need(c(FALSE, FALSE, TRUE), FALSE))
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})
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