has_ws <- function(x) {
  any(!is.na(x) & (startsWith(x, " ") | endsWith(x, " ")))
}

test_that("wb_language", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-language.rds"))
  )
  actual <- wb_language()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(23L, 3L))
  expect_true(all(map_lgl(actual, is.character)))
  expect_true(all(map_lgl(actual, \(x) all(nzchar(x)))))
  expect_false(any(map_lgl(actual, has_ws)))
})

test_that("wb_lending_type", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-lending-type.rds"))
  )
  actual <- wb_lending_type()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(4L, 3L))
  expect_true(all(map_lgl(actual, is.character)))
  expect_true(all(map_lgl(actual, \(x) all(nzchar(x)))))
  expect_false(any(map_lgl(actual, has_ws)))
})

test_that("wb_income_level", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-income-level.rds"))
  )
  actual <- wb_income_level()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(7L, 3L))
  expect_true(all(map_lgl(actual, is.character)))
  expect_true(all(map_lgl(actual, \(x) all(nzchar(x)))))
  expect_false(any(map_lgl(actual, has_ws)))
})

test_that("wb_source", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-source.rds"))
  )
  actual <- wb_source()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(69L, 9L))
  for (x in actual) {
    if (is.character(x)) {
      expect_true(all(nzchar(x)))
      expect_false(has_ws(x))
    }
  }
})

test_that("wb_topic", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-topic.rds"))
  )
  actual <- wb_topic()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(21L, 3L))
  for (x in actual) {
    if (is.character(x)) {
      expect_true(all(nzchar(x)))
      expect_false(has_ws(x))
    }
  }
})

test_that("wb_region", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-region.rds"))
  )
  actual <- wb_region()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(44L, 4L))
  for (x in actual) {
    if (is.character(x)) {
      expect_true(all(nzchar(x)))
      expect_false(has_ws(x))
    }
  }
})

test_that("wb_country", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-country.rds"))
  )
  actual <- wb_country()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(296L, 18L))
  for (x in actual) {
    if (is.character(x)) {
      expect_true(all(nzchar(x)))
      expect_false(has_ws(x))
    }
  }
})

test_that("wb_indicator", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-indicator.rds"))
  )
  actual <- wb_indicator()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(100L, 9L))
  for (x in actual) {
    if (is.character(x)) {
      expect_true(all(nzchar(x)))
      expect_false(has_ws(x))
    }
  }
})

test_that("wb_country_indicator", {
  local_mocked_bindings(
    worldbank = function(...) readRDS(test_path("fixtures", "wb-country-indicator.rds"))
  )
  actual <- wb_country_indicator()
  expect_s3_class(actual, "data.frame")
  expect_identical(dim(actual), c(63L, 10L))
  for (x in actual) {
    if (is.character(x)) {
      expect_true(all(nzchar(x)))
      expect_false(has_ws(x))
    }
  }
})

test_that("wb_lending_type input validation works", {
  # type should be a three letter code or NULL
  expect_error(wb_lending_type(character()))
  expect_error(wb_lending_type(""))
  expect_error(wb_lending_type("ab"))
  expect_error(wb_lending_type("abcd"))
  expect_error(wb_lending_type(c("abc", "abcd")))
  expect_error(wb_lending_type(NA))
  expect_error(wb_lending_type(1L))
  expect_error(wb_lending_type(TRUE))
  # lang should be two letter code
  expect_error(wb_lending_type(lang = "a"))
  expect_error(wb_lending_type(lang = "abc"))
  expect_error(wb_lending_type(lang = c("a", "b")))
  expect_error(wb_lending_type(lang = TRUE))
  expect_error(wb_lending_type(lang = 1L))
})

test_that("wb_income_level input validation works", {
  # income should be a three letter code or NULL
  expect_error(wb_income_level(character()))
  expect_error(wb_income_level(""))
  expect_error(wb_income_level("ab"))
  expect_error(wb_income_level("abcd"))
  expect_error(wb_income_level(c("abc", "abcd")))
  expect_error(wb_income_level(NA))
  expect_error(wb_income_level(1L))
  expect_error(wb_income_level(TRUE))
  # lang should be two letter code
  expect_error(wb_income_level(lang = "a"))
  expect_error(wb_income_level(lang = "abc"))
  expect_error(wb_income_level(lang = c("a", "b")))
  expect_error(wb_income_level(lang = TRUE))
  expect_error(wb_income_level(lang = 1L))
})

test_that("wb_source input validation works", {
  # source should be a character vector or NULL
  expect_error(wb_source(character()))
  expect_error(wb_source(NA))
  expect_error(wb_source(1L))
  expect_error(wb_source(TRUE))
  # lang should be two letter code
  expect_error(wb_source(lang = "a"))
  expect_error(wb_source(lang = "abc"))
  expect_error(wb_source(lang = c("a", "b")))
  expect_error(wb_source(lang = TRUE))
  expect_error(wb_source(lang = 1L))
})

test_that("wb_topic input validation works", {
  # topic should be a character vector or NULL
  expect_error(wb_topic(character()))
  expect_error(wb_topic(NA))
  expect_error(wb_topic(1L))
  expect_error(wb_topic(TRUE))
  # lang should be two letter code
  expect_error(wb_topic(lang = "a"))
  expect_error(wb_topic(lang = "abc"))
  expect_error(wb_topic(lang = c("a", "b")))
  expect_error(wb_topic(lang = TRUE))
  expect_error(wb_topic(lang = 1L))
})

test_that("wb_region input validation works", {
  # region should be a character vector or NULL
  expect_error(wb_region(character()))
  expect_error(wb_region(NA))
  expect_error(wb_region(1L))
  expect_error(wb_region(TRUE))
  # lang should be two letter code
  expect_error(wb_region(lang = "a"))
  expect_error(wb_region(lang = "abc"))
  expect_error(wb_region(lang = c("a", "b")))
  expect_error(wb_region(lang = TRUE))
  expect_error(wb_region(lang = 1L))
})

test_that("wb_country input validation works", {
  # country should be a character vector with 2/3 letters or NULL
  expect_error(wb_country("a"))
  expect_error(wb_country("abcd"))
  expect_error(wb_country(c("ab", "abcd")))
  expect_error(wb_country(character()))
  expect_error(wb_country(NA))
  expect_error(wb_country(1L))
  expect_error(wb_country(TRUE))
  # lang should be two letter code
  expect_error(wb_country(lang = "a"))
  expect_error(wb_country(lang = "abc"))
  expect_error(wb_country(lang = c("a", "b")))
  expect_error(wb_country(lang = TRUE))
  expect_error(wb_country(lang = 1L))
})

test_that("wb_indicator input validation works", {
  # country should be a character vector with 2/3 letters or NULL
  expect_error(wb_indicator("a"))
  expect_error(wb_indicator("abcd"))
  expect_error(wb_indicator(c("ab", "abcd")))
  expect_error(wb_indicator(character()))
  expect_error(wb_indicator(NA))
  expect_error(wb_indicator(1L))
  expect_error(wb_indicator(TRUE))
  # lang should be two letter code
  expect_error(wb_indicator(lang = "a"))
  expect_error(wb_indicaotr(lang = "abc"))
  expect_error(wb_indicaotr(lang = c("a", "b")))
  expect_error(wb_indicaotr(lang = TRUE))
  expect_error(wb_indicaotr(lang = 1L))
})

test_that("wb_country_indicator input validation works", {
  # indicator should be a string
  expect_error(wb_country_indicator(indicator = NULL))
  expect_error(wb_country_indicator(indicator = c("a", "b")))
  expect_error(wb_country_indicator(indicator = 1L))
  expect_error(wb_country_indicator(indicator = NA))
  # country should be a character vector with 2/3 letters or NULL
  expect_error(wb_country_indicator(country = "a"))
  expect_error(wb_country_indicator(country = "abcd"))
  expect_error(wb_country_indicator(country = c("ab", "abcd")))
  expect_error(wb_country_indicator(country = character()))
  expect_error(wb_country_indicator(country = NA))
  expect_error(wb_country_indicator(country = 1L))
  expect_error(wb_country_indicator(country = TRUE))
  # lang should be two letter code
  expect_error(wb_country_indicator(lang = "a"))
  expect_error(wb_country_indicaotr(lang = "abc"))
  expect_error(wb_country_indicaotr(lang = c("a", "b")))
  expect_error(wb_country_indicaotr(lang = TRUE))
  expect_error(wb_country_indicaotr(lang = 1L))
})