tests/testthat/test-util_as_numeric.R

In dataquieR: Data Quality in Epidemiological Research

test_that("util_as_numeric works", {
  skip_on_cran()
  a <- dataquieR:::util_as_numeric(1:10,
                             warn = TRUE)
  b <- dataquieR:::util_as_numeric(as.character(1:10),
                              warn = TRUE)
  c <- dataquieR:::util_as_numeric(factor(1:10,
                                     levels = 10:1,
                                     labels = as.character(1:10)),
                              warn = TRUE)
  d <- expect_warning(
       dataquieR:::util_as_numeric(factor(1:10,
                                     levels = 10:1,
                                     labels =
                                       paste("Grade", as.character(1:10))),
                              warn = TRUE),
       regexp = paste(
         "Could not convert .+Grade 10.+, .+Grade 9.+, .+Grade 8.+,",
         ".+Grade 7.+, .+Grade 6.+, ... to numeric values"),
       perl = TRUE)

  e <- dataquieR:::util_as_numeric(ordered(1:10,
                                     levels = 10:1,
                                     labels = as.character(1:10)),
                              warn = TRUE)

  expect_equal(a, 1:10)
  expect_equal(b, 1:10)
  expect_equal(c, 10:1)
  expect_equal(d, rep(NA_real_, 10))
  expect_equal(e, 10:1)
})