skip_if_not_installed("truncreg")
skip_if_not_installed("survival")
data("tobin", package = "survival")
m1 <- truncreg::truncreg(durable ~ age + quant, data = tobin, subset = durable > 0)
test_that("model_info", {
expect_true(model_info(m1)$is_linear)
})
test_that("find_predictors", {
expect_identical(find_predictors(m1), list(conditional = c("age", "quant")))
expect_identical(find_predictors(m1, flatten = TRUE), c("age", "quant"))
expect_null(find_predictors(m1, effects = "random"))
})
test_that("find_response", {
expect_identical(find_response(m1), "durable")
})
test_that("link_inverse", {
expect_equal(link_inverse(m1)(0.2), 0.2, tolerance = 1e-5)
})
test_that("get_data", {
expect_equal(nrow(get_data(m1)), 7)
expect_equal(colnames(get_data(m1)), c("durable", "age", "quant"))
})
test_that("find_formula", {
expect_length(find_formula(m1), 1)
expect_equal(
find_formula(m1),
list(conditional = as.formula("durable ~ age + quant")),
ignore_attr = TRUE
)
})
test_that("find_terms", {
expect_equal(find_terms(m1), list(
response = "durable",
conditional = c("age", "quant")
))
expect_equal(find_terms(m1, flatten = TRUE), c("durable", "age", "quant"))
})
test_that("n_obs", {
expect_equal(n_obs(m1), 7)
})
test_that("linkfun", {
expect_false(is.null(link_function(m1)))
})
test_that("find_parameters", {
expect_equal(
find_parameters(m1),
list(conditional = c(
"(Intercept)", "age", "quant", "sigma"
))
)
expect_equal(nrow(get_parameters(m1)), 4)
expect_equal(
get_parameters(m1)$Parameter,
c("(Intercept)", "age", "quant", "sigma")
)
})
test_that("find_statistic", {
expect_identical(find_statistic(m1), "t-statistic")
})
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