tests/testthat/test-enframed_and_labelled.R

In torfason/zulutils: Miscellaneous utility functions that the author found useful

#### test lookup() ####
test_that("lookup works", {

  # Extremely simple test with letters
  expect_equal(lookup(letters, c(a="A",b="B")), c("A","B",letters[3:26]))

  # Validation data
  d.pets = tibble::enframe(c(
    cat="mammal",
    lizard="reptile",
    parrot="bird"
  ))
  x.species  = c("lizard", "cat")
  x.kingdoms = c("reptile","mammal")

  # Standard lookup
  expect_equal( lookup(x.species,d.pets),  x.kingdoms  )

  # Order should not matter, only the names of the name/value columns.
  d.pets.rearranged = d.pets %>%
    dplyr::mutate(ga = "ga", rb="rb", age="age") %>%
    dplyr::select(ga,name,rb,value,age)
  expect_equal( lookup(x.species,d.pets.rearranged),  x.kingdoms)
})


#### test lookuper() ####
test_that("lookuper works", {

  # Extremely simple test with letters
  lookup_letters <- lookuper(c(a = "A", b = "B"))
  expect_equal(lookup_letters(letters), c("A", "B", letters[3:26]))

  # Validation data
  d.pets <- tibble::enframe(c(
    cat = "mammal",
    lizard = "reptile",
    parrot = "bird"
  ))
  x.species <- c("lizard", "cat")
  x.kingdoms <- c("reptile", "mammal")

  # Standard lookup
  lookup_pets <- lookuper(d.pets)
  expect_equal(lookup_pets(x.species), x.kingdoms)

  # Order should not matter, only the names of the name/value columns.
  d.pets.rearranged <- d.pets %>%
    dplyr::mutate(ga = "ga", rb = "rb", age = "age") %>%
    dplyr::select(ga, name, rb, value, age)
  lookup_pets_rearranged <- lookuper(d.pets.rearranged)
  expect_equal(lookup_pets_rearranged(x.species), x.kingdoms)
})



#### test lookup_enframed() ####
test_that("lookup_enframed is deprecated", {
  expect_warning(lookup_enframed(letters, c(a="A",b="B")))
})

#### test rename_enframed() ####
test_that("rename_enframed works", {

    # Test data
    data   = tibble::tibble(plain_numbers=1:4,plain_letters=letters[1:4])
    final  = tibble::tibble(`The Numbers`=1:4, `The Letters`=letters[1:4])
    labels = tibble::enframe(c(plain_numbers="The Numbers",plain_letters="The Letters"))

    # The main test
    expect_equal(rename_enframed(data,labels), final)

    # Test that both inputs are data.frames
    expect_error(rename_enframed(data,letters))
    expect_error(rename_enframed(letters,labels))
})


#### test get_labels_enframed() ####
test_that("get_labels_enframed works", {

    # Test data (input)
    data_all     = cars
    attr(data_all$speed,"label") <- "Speed (mph)"
    attr(data_all$dist, "label") <- "Stopping distance (ft)"
    data_partial = cars
    attr(data_partial$speed,"label") <- "Speed (mph)"
    data_none    = cars

    # Test data (output)
    out_all = tibble::tibble(
        name=c("speed","dist"),
        value=c("Speed (mph)","Stopping distance (ft)")
    )
    out_none = tibble::tibble(
        name=c("speed","dist"),
        value=c(NA, NA)
    )
    out_partial = tibble::tibble(
        name=c("speed","dist"),
        value=c("Speed (mph)",NA)
    )

    # The main test
    expect_equal(get_labels_enframed(data_all), out_all)

    # Missing labels
    expect_equal(get_labels_enframed(data_partial), out_partial)
    expect_equal(get_labels_enframed(data_none), out_none)
})