tests/testthat/test-scoping.R

In strengejacke/ggeffects: Create Tidy Data Frames of Marginal Effects for 'ggplot' from Model Outputs

skip_on_os(c("mac", "solaris"))

test_that("ggpredict, scoping", {
  data(efc, package = "ggeffects")

  fn1 <- function(data) {
    fit <- lm(barthtot ~ c12hour + neg_c_7 + c161sex + c172code, data = data)
    v <- c(20, 50, 70)
    ggpredict(fit, terms = "c12hour [20, 50, 70]", verbose = FALSE)
  }

  fn2 <- function(data) {
    fit <- lm(barthtot ~ c12hour + neg_c_7 + c161sex + c172code, data = data)
    v <- c(20, 50, 70)
    ggpredict(fit, terms = "c12hour [v]", verbose = FALSE)
  }

  out1 <- capture.output(print(fn1(efc)))
  out2 <- capture.output(print(fn2(efc)))
  expect_identical(out1, out2)
})

test_that("ggpredict, scoping-2", {
  data(efc, package = "ggeffects")
  fn3 <- function(data, v) {
    fit <- lm(barthtot ~ c12hour + c172code, data = data)
    ggpredict(fit, terms = "c12hour [v]", verbose = FALSE)
  }
  v <- c(5, 6, 7)
  a <- c(0.3, 0.5, 0.7)
  out <- fn3(efc, a)
  expect_equal(out$x, c(0.3, 0.5, 0.7), ignore_attr = TRUE)
})