context("from_to")
test_that("incorrect inputs raise errors", {
bads <- list(
letters[1:5],
matrix(1:12, 4, 3)
)
expect_that(from_to(bads[[1]]), throws_error("A list is required"))
expect_that(from_to(bads[[2]]), throws_error("A list is required"))
})
test_that("from_to works as expected", {
num_list = list(1:3, 4:5, 6:9)
str_list = list(c("a","b"), letters[1:5])
nul_list = list(1:3, NULL, 1:10)
expect_that(from_to(num_list), equals(list(from=c(1, 4, 6), to=c(3, 5, 9))))
expect_that(from_to(str_list), equals(list(from=c(1, 3), to=c(2, 7))))
expect_that(from_to(nul_list), equals(list(from=c(1, 4, 4), to=c(3, 3, 13))))
})
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