Nothing
context("ichunk iterator")
test_that("ichunk functions properly without using default value", {
it <- iterators::iter(letters[1:3])
it_chunk <- ichunk(it, chunk_size=3)
expect_equal(iterators::nextElem(it_chunk), as.list(letters[1:3]))
})
test_that("ichunk functions properly when using fill value", {
it <- iterators::iter(letters[1:3])
it_chunk <- ichunk(it, chunk_size=2)
expect_equal(iterators::nextElem(it_chunk), as.list(letters[1:2]))
expect_equal(iterators::nextElem(it_chunk), list(letters[3], NA))
})
test_that("ichunk functions properly when fill value is specified", {
it <- iterators::iter(letters[1:3])
it_chunk <- ichunk(it, chunk_size=2, fill='weeeeee')
expect_equal(iterators::nextElem(it_chunk), as.list(letters[1:2]))
expect_equal(iterators::nextElem(it_chunk), list(letters[3], 'weeeeee'))
})
test_that("ichunk rejects non-positive or non-numeric n", {
it <- iterators::iter(letters)
error_msg <- "'chunk_size' must be a positive integer of length 1"
expect_error(ichunk(it, chunk_size=-1), error_msg)
expect_error(ichunk(it, "1"), error_msg)
})
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