if (requiet("quantreg")) {
set.seed(123)
n <- 200
x <- rnorm(n)
y <- 5 + x + rnorm(n)
c <- 4 + x + rnorm(n)
d <- (y > c)
dat <<- data.frame(y, x, c, d)
# model
m1 <- crq(survival::Surv(pmax(y, c), d, type = "left") ~ x, method = "Portnoy", data = dat)
test_that("model_info", {
expect_false(model_info(m1)$is_linear)
expect_true(model_info(m1)$is_censored)
})
test_that("find_predictors", {
expect_identical(
find_predictors(m1),
list(conditional = "x")
)
})
test_that("find_random", {
expect_null(find_random(m1))
})
test_that("find_response", {
expect_identical(find_response(m1), "survival::Surv(pmax(y, c), d, type = \"left\")")
})
test_that("get_predictors", {
expect_equal(colnames(get_predictors(m1)), "x")
})
test_that("get_data", {
expect_equal(nrow(get_data(m1)), 200)
expect_equal(
colnames(get_data(m1)),
c("y", "c", "d", "x")
)
})
test_that("find_formula", {
expect_length(find_formula(m1), 1)
expect_equal(
find_formula(m1),
list(conditional = as.formula("survival::Surv(pmax(y, c), d, type = \"left\") ~ x")),
ignore_attr = TRUE
)
})
test_that("find_terms", {
expect_equal(
find_terms(m1),
list(
response = "Surv(pmax(y, c), d, type = \"left\")",
conditional = "x"
)
)
expect_equal(
find_terms(m1, flatten = TRUE),
c("Surv(pmax(y, c), d, type = \"left\")", "x")
)
})
test_that("n_obs", {
expect_equal(n_obs(m1), 200)
})
test_that("link_function", {
expect_equal(link_function(m1)(0.2), 0.2, tolerance = 1e-5)
})
test_that("link_inverse", {
expect_equal(link_inverse(m1)(0.2), 0.2, tolerance = 1e-5)
})
test_that("find_parameters", {
expect_equal(
find_parameters(m1),
list(conditional = c("(Intercept)", "x"))
)
expect_equal(nrow(get_parameters(m1)), 8)
expect_equal(
get_parameters(m1)$Parameter,
c("(Intercept)", "x", "(Intercept)", "x", "(Intercept)", "x", "(Intercept)", "x")
)
expect_equal(
get_parameters(m1)$Component,
c("tau (0.2)", "tau (0.2)", "tau (0.4)", "tau (0.4)", "tau (0.6)", "tau (0.6)", "tau (0.8)", "tau (0.8)")
)
})
test_that("find_statistic", {
expect_identical(find_statistic(m1), "t-statistic")
})
if (getRversion() >= "3.6.0") {
test_that("get_statistic", {
expect_equal(
get_statistic(m1)$Parameter,
c("(Intercept)", "x", "(Intercept)", "x", "(Intercept)", "x", "(Intercept)", "x")
)
expect_equal(
get_statistic(m1)$Statistic,
c(67.64633, 5.88482, 56.8453, 10.05249, 76.86565, 9.78366, 53.05556, 12.83912),
tolerance = 1e-3
)
})
}
}
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