if (helper_skip()) {

  context("Test pmx_plot_eta_cats function")
  ctr <- theophylline()
  #------------------- pmx_plot_eta_cats start ------------------------------------------
  test_that(
    "pmx_plot_eta_cats: params: strat.color; result: identical value",
    {
      p <- ctr %>% pmx_plot_eta_cats(is.strat.color = TRUE)
      expect_equal(p$plot_env$x$is.strat.color, TRUE)
    }
  )

  test_that("levels filtering is working", {
    p <- pmx_plot_eta_cats(
      ctr,
      effects=list(
        levels=c("ka", "V"),
        labels=c("Absorption_rate", "V")
      )
    )

    expect_identical(levels(p[["data"]][["EFFECT"]]), c("Absorption_rate", "V"))
  })

  #------------------- pmx_plot_eta_cats end --------------------------------------------

  context("Test pmx Eta Covariates plots")

  ctr <- theophylline(settings = pmx_settings(effects = list(
    levels = c("ka", "V", "Cl"),
    labels = c("Concentration", "Volume", "Clearance")
  )))

  #------------------- pmx_plot_eta_cats start -------------------------------
  test_that(
    "pmx_plot_eta_cats: params: ctr is controller, covariates result: gg",
    {
      expect_true(inherits(
        pmx_plot_eta_cats(
          ctr = ctr,
          covariates = pmx_cov(
            values = list("WT0", "AGE0"),
            labels = list("Weight", "Age")
          )
        ),
        "gg"
      ))
    }
  )

  test_that(
    "pmx_plot_eta_cats: params: ctr is controller, covariates result: gg",
    {
      expect_error(ctr <- theophylline(settings = pmx_settings(effects = list(
        levels = c("ka", "V"),
        labels = c("Concentration", "Volume")
      ))), NA)
    }
  )

  test_that(
    "pmx_plot_eta_cats: params: ctr is controller, covariates result: list",
    {
      expect_true(all(ctr$settings$effects$levels == c("ka", "V", "Cl")))

      expect_true(all(
        ctr$settings$effects$labels == c("Concentration", "Volume", "Clearance")
      ))
      p <- pmx_plot_eta_cats(
        ctr = ctr,
        covariates = pmx_cov(
          values = list("WT0", "AGE0"),
          labels = list("Weight", "Age")
        )
      )
      expect_true(all(unique(p$data$variable) %in% c("Weight", "Age")))
    }
  )
  #------------------- pmx_plot_eta_cats end ---------------------------------

  #------------------- pmx_plot_eta_conts start ------------------------------
  test_that(
    "pmx_plot_eta_conts: params: ctr is controller, covariates result: gg",
    {
      expect_true(inherits(
        pmx_plot_eta_conts(
          ctr = ctr,
          covariates = pmx_cov(
            values = list("WT0", "AGE0"),
            labels =
              list("Weight", "Age")
          )
        ),
        "gg"
      ))
    }
  )
  #------------------- pmx_plot_eta_conts end --------------------------------
}