tests/testthat/test-tar_glimpse.R

In targets: Dynamic Function-Oriented 'Make'-Like Declarative Pipelines

tar_test("tar_glimpse()", {
  skip_if_not_installed("visNetwork")
  tar_script({
    tar_option_set()
    list(
      tar_target(y1, 1 + 1),
      tar_target(y2, 1 + 1),
      tar_target(z, y1 + y2)
    )
  })
  out <- tar_glimpse(
    callr_function = NULL,
    callr_arguments = list(show = FALSE)
  )
  expect_true(inherits(out, "visNetwork"))
})

tar_test("custom script and store args", {
  skip_cran()
  skip_if_not_installed("visNetwork")
  expect_equal(tar_config_get("script"), path_script_default())
  expect_equal(tar_config_get("store"), path_store_default())
  tar_script(tar_target(x, "y"), script = "example/script.R")
  out <- tar_glimpse(
    script = "example/script.R",
    store = "example/store",
    callr_function = NULL
  )
  expect_true(inherits(out, "visNetwork"))
  expect_false(file.exists("_targets.yaml"))
  expect_equal(tar_config_get("script"), path_script_default())
  expect_equal(tar_config_get("store"), path_store_default())
  expect_false(file.exists(path_script_default()))
  expect_false(file.exists(path_store_default()))
  expect_true(file.exists("example/script.R"))
  expect_false(file.exists("example/store"))
  tar_config_set(script = "x")
  expect_equal(tar_config_get("script"), "x")
  expect_true(file.exists("_targets.yaml"))
})

tar_test("custom script and store args with callr function", {
  skip_cran()
  skip_if_not_installed("visNetwork")
  expect_equal(tar_config_get("script"), path_script_default())
  expect_equal(tar_config_get("store"), path_store_default())
  tar_script(tar_target(x, "y"), script = "example/script.R")
  out <- tar_glimpse(
    script = "example/script.R",
    store = "example/store"
  )
  expect_true(inherits(out, "visNetwork"))
  expect_false(file.exists("_targets.yaml"))
  expect_equal(tar_config_get("script"), path_script_default())
  expect_equal(tar_config_get("store"), path_store_default())
  expect_false(file.exists(path_script_default()))
  expect_false(file.exists(path_store_default()))
  expect_true(file.exists("example/script.R"))
  expect_false(file.exists("example/store"))
  tar_config_set(script = "x")
  expect_equal(tar_config_get("script"), "x")
  expect_true(file.exists("_targets.yaml"))
})