tests/testthat/test_read.R

In heike/bulletxtrctr: Automatic Matching of Bullet Striae

context("read")
skipall <- T
if (requireNamespace("here") & requireNamespace("purrr")) {
  skipall <- F
  load(here::here("tests/bullet1_only.Rdata"))

  testthat::setup({
    # Download data if it is not present
    if (!dir.exists(here::here("tests/Bullet1"))) {
      dir.create(here::here("tests/Bullet1"))
    }
    b1l2 <- here::here("tests/Bullet1/Hamby252_Barrel1_Bullet1_Land2.x3p")
    if (!file.exists(b1l2)) {
      download.file(hamby252demo[[1]][2],
        destfile = b1l2, quiet = T
      )
    }
  })

  # teardown({
  #   file.remove(here::here("tests/Bullet1/Hamby252_Barrel1_Bullet1_Land2.x3p"))
  #   unlink(here::here("tests/Bullet1"), recursive = T)
  # })


  o1 <- capture.output(
    b2 <- read_bullet(here::here("tests/Bullet1"), "x3p"),
    split = T
  )
  b3 <- b2 %>%
    # turn the scans such that (0,0) is bottom left
    dplyr::mutate(
      x3p = x3p %>% purrr::map(.f = function(x) x %>%
          x3ptools::rotate_x3p(angle = -90) %>%
          x3ptools::y_flip_x3p())
    ) %>%
    dplyr::mutate(
      x3p = x3p %>% purrr::map(.f = function(x) {
        # make sure all measurements are in microns
        x$surface.matrix <- x$surface.matrix * 10^6
        x$header.info$incrementY <- x$header.info$incrementY * 10^6
        x$header.info$incrementX <- x$header.info$incrementX * 10^6
        x
      })
    )

  b4 <- read_bullet(urllist = hamby252demo$bullet1[2]) %>%
    # turn the scans such that (0,0) is bottom left
    dplyr::mutate(
      x3p = x3p %>% purrr::map(.f = function(x) x %>%
          x3ptools::rotate_x3p(angle = -90) %>%
          x3ptools::y_flip_x3p())
    ) %>%
    dplyr::mutate(
      x3p = x3p %>% purrr::map(.f = function(x) {
        # make sure all measurements are in microns
        x$surface.matrix <- x$surface.matrix * 10^6
        x$header.info$incrementY <- x$header.info$incrementY * 10^6
        x$header.info$incrementX <- x$header.info$incrementX * 10^6
        x
      })
    )
}


test_that("read works as expected", {
  skip_if(skipall)
  expect_length(o1, 0)
  expect_s3_class(b2, "tbl_df")
  expect_s3_class(b2, "tbl")
  expect_s3_class(b2, "data.frame")
  expect_equal(b1_l2_x3p$x3p, b3$x3p)
  expect_equal(b1_l2_x3p$x3p, b4$x3p)

  # If conditions
  expect_message(
    read_bullet(
      folder = here::here("tests/Bullet1/"),
      urllist = hamby252demo$bullet1[2]
    ),
    "folder and urllist both provided"
  )
  expect_error(read_bullet())
})