context("Rmpg output")

skip_on_cran()

library(laeken)
library(survey)
library(vardpoor)
data(eusilc)
names(eusilc) <- tolower(names(eusilc))
dati = data.frame(IDd = seq(10000 , 10000 + nrow(eusilc) - 1) , eusilc)

SE_lin2 <- function(t, des) {
  variance <-
    survey::svyrecvar(t / des$prob,
                      des$cluster,
                      des$strata,
                      des$fpc,
                      postStrata = des$postStrata)
  sqrt(variance)
}
des_eusilc <-
  svydesign(
    ids = ~ rb030,
    strata =  ~ db040,
    weights = ~ rb050,
    data = eusilc
  )

des_eusilc <- convey_prep(des_eusilc)

vardpoor_linrmpgw <-
  linrmpg(
    Y = "eqincome",
    id = "IDd",
    weight = "rb050",
    Dom = NULL,
    dataset = dati,
    percentage = 60,
    order_quant = 50L
  )
vardest <- vardpoor_linrmpgw$value
attributes(vardest) <- NULL
vardest <- unlist(vardest)
varse <- SE_lin2(vardpoor_linrmpgw$lin$lin_rmpg, des_eusilc)
attributes(varse) <- NULL
fun_svyrmpgw <- svyrmpg( ~ eqincome, design = des_eusilc, 0.5, 0.6)
convest <- coef(fun_svyrmpgw)
attributes(convest) <- NULL
convse <- SE(fun_svyrmpgw)
attributes(convse) <- NULL
#domain
vardpoor_rmpgd <-
  linrmpg(
    Y = "eqincome",
    id = "IDd",
    weight = "rb050",
    Dom = c("hsize"),
    dataset = dati
  )
#  point estimates
vardestd <- unlist(vardpoor_rmpgd$value$rmpg)
#  se estimates
varsed <-
  sapply(data.frame(vardpoor_rmpgd$lin)[, 2:10], function(t)
    SE_lin2(t, des_eusilc))
attributes (varsed) <- NULL
# library convey

fun_rmpgd <-
  svyby(
    ~ eqincome,
    by = ~ hsize,
    design = subset(des_eusilc, hsize < 8),
    FUN = svyrmpg,
    deff = FALSE
  )

convestd <- coef(fun_rmpgd)
attributes(convestd) <- NULL
convsed <- SE(fun_rmpgd)



test_that("compare results convey vs vardpoor", {
  expect_equal(vardest, 100 * convest)
  expect_equal(varse, 100 * convse)
  expect_equal(vardestd[1:7], 100 * convestd)
  expect_equal(vardestd[8:9], as.numeric(c(NA, NA)))
  expect_equal(varsed[8:9], c(0, 0))
  skip('different arpr se')
  expect_equal(varsed[1:7], 100 * convsed)
})
