if (require("testthat") &&
require("insight") &&
require("survival")) {
data("lung")
m1 <- survfit(Surv(time, status) ~ sex + age + ph.ecog, data = lung)
test_that("model_info", {
expect_true(model_info(m1)$is_logit)
})
test_that("find_predictors", {
expect_identical(find_predictors(m1), list(conditional = c("sex", "age", "ph.ecog")))
expect_null(find_predictors(m1, effects = "random"))
})
test_that("find_response", {
expect_identical(find_response(m1), "Surv(time, status)")
expect_identical(find_response(m1, combine = FALSE), c("time", "status"))
})
test_that("link_inverse", {
expect_equal(link_inverse(m1)(.2), plogis(.2), tolerance = 1e-5)
})
test_that("get_data", {
expect_equal(nrow(get_data(m1)), 227)
expect_equal(
colnames(get_data(m1)),
c("time", "status", "age", "sex", "ph.ecog")
)
})
test_that("find_formula", {
expect_length(find_formula(m1), 1)
expect_equal(
find_formula(m1),
list(conditional = as.formula(
"Surv(time, status) ~ sex + age + ph.ecog"
))
)
})
test_that("find_variables", {
expect_equal(find_variables(m1), list(
response = c("time", "status"),
conditional = c("sex", "age", "ph.ecog")
))
expect_equal(
find_variables(m1, flatten = TRUE),
c("time", "status", "sex", "age", "ph.ecog")
)
})
test_that("n_obs", {
expect_equal(n_obs(m1), 227)
})
test_that("linkfun", {
expect_false(is.null(link_function(m1)))
})
test_that("is_multivariate", {
expect_false(is_multivariate(m1))
})
test_that("find_terms", {
expect_equal(
find_terms(m1),
list(
response = "Surv(time, status)",
conditional = c("sex", "age", "ph.ecog")
)
)
})
test_that("find_statistic", {
expect_null(find_statistic(m1))
})
}
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