# Tests for np.mojo.multilag function

set.seed(1)
x <- rnorm(500) + c(rep(0, 200), rep(2, 300))
G <- 80

x.c <- np.mojo.multilag(x, G = G)

test_that("np.mojo.multilag executes", {
  skip_on_cran()
  expect_equal(class(x.c), "list")
})

test_that("Change point merging type is recognised", {
  expect_error(
    np.mojo.multilag(x, G = G, merge.type = "pruning"),
    "Error: change point merging type must be either 'sequential' or 'bottom-up'."
  )
})

test_that("lags parameter is numeric", {
  expect_error(
    np.mojo.multilag(x, G = G, lags = c("0", "1")),
    "The set of lags must be a numeric vector of positive integer values."
  )
})

test_that("lags parameter contains positive values", {
  expect_error(
    np.mojo.multilag(x, G = G, lags = c(0, -1)),
    "The set of lags must be a numeric vector of positive integer values."
  )
})