tests/testthat/test-bats.R

In forecast: Forecasting Functions for Time Series and Linear Models

# A unit test for bats function
if (require(testthat)) {
  test_that("tests for a non-ts object", {
    set.seed(123)
    abc <- rnorm(50, 5, 1)
    fit <- bats(abc, use.box.cox = TRUE, use.parallel = FALSE)
    expect_false(fit$lambda == 0)
    expect_output(print(fit), "Seed States")
    expect_equal(length(residuals(fit)), 50L)
    plot(fit)
    expect_equal(bats(1, use.box.cox = TRUE, use.parallel = FALSE)$AIC, -Inf)
    expect_equal(bats(-1, use.box.cox = TRUE, use.parallel = FALSE)$AIC, -Inf)
  })

  test_that("Test parallel of bats", {
    abc <- rnorm(50, 5, 1)
    skip_on_cran()
    skip_if(identical(Sys.getenv("GITHUB_ACTIONS"), "true"))
    expect_gt(bats(abc, use.box.cox = TRUE, use.parallel = TRUE)$lambda, 0.999)
  })
}