skip_if_not_installed("nlme")
skip_if_not_installed("lme4")

data("sleepstudy", package = "lme4")

model <- nlme::lme(Reaction ~ Days,
  random = ~ 1 + Days | Subject,
  data = sleepstudy
)

test_that("model_parameters.lme", {
  params <- model_parameters(model, effects = "fixed")
  expect_equal(params$SE, c(6.8245, 1.5458), tolerance = 1e-3)
  expect_equal(
    colnames(params),
    c("Parameter", "Coefficient", "SE", "CI", "CI_low", "CI_high", "t", "df_error", "p", "Effects")
  )
})

test_that("model_parameters.lme", {
  params <- model_parameters(model, effects = "all")
  expect_equal(params$Coefficient, c(251.4051, 10.46729, 24.74024, 5.9221, 0.066, 25.59184), tolerance = 1e-3)
  expect_equal(params$SE, c(6.82452, 1.54578, NA, NA, NA, NA), tolerance = 1e-3)
  expect_equal(
    colnames(params),
    c(
      "Parameter", "Coefficient", "SE", "CI", "CI_low", "CI_high", "t",
      "df_error", "p", "Effects", "Group"
    )
  )
})