context("Testing functions for times operations")

example_run <- rbi::bi_read(system.file(package = "rbi", "example_output.nc"))
example_model_file <- system.file(package = "rbi", "PZ.bi")
example_bi <- rbi::attach_data(
  rbi::libbi(example_model_file), "output", example_run
)

test_that("We can convert numeric to actual times", {
  expect_equal(
    class(
      numeric_to_time(
        example_bi, origin = as.Date("2018-01-01"), unit = "day"
      )$Z$time
    ), "Date"
  )
  expect_true(
    "POSIXt" %in% class(numeric_to_time(
      bi_read(example_bi), origin = as.Date("2018-01-01"), unit = "2 minutes"
    )$Z$time)
  )
})

test_that("We can convert actual to numeric times", {
  out <- numeric_to_time(
    example_bi, origin = as.Date("2018-01-01"), unit = "day"
  )
  expect_equal(
    class(
      time_to_numeric(
        out, origin = as.Date("2018-01-01"), unit = "day"
      )$Z$time
    ), "numeric"
  )
  expect_equal(
    class(
      time_to_numeric(
        out$Z, origin = as.Date("2018-01-01"), unit = "day"
      )$time
    ), "numeric"
  )
})

test_that("Errors are recognised", {
  expect_error(time_to_numeric(3), "must be")
  expect_error(numeric_to_time(3), "must be")
})