library(testthat)
library(recipes)
library(lubridate)
exp_dates <- data.frame(
date = ymd(c("2017-12-25", "2017-05-29", "2017-04-16")),
holiday = c("ChristmasDay", "USMemorialDay", "Easter"),
stringsAsFactors = FALSE
)
test_data <- data.frame(
day = c(ymd("2017-01-01") + days(0:364), NA),
stringsAsFactors = FALSE
)
is_equal_1 <- function(x) {
x == 1 & !is.na(x)
}
test_that("Date class", {
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(), holidays = exp_dates$holiday)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_USMemorialDay)],
exp_dates$date[exp_dates$holiday == "USMemorialDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_ChristmasDay)],
exp_dates$date[exp_dates$holiday == "ChristmasDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_Easter)],
exp_dates$date[exp_dates$holiday == "Easter"]
)
expect_equal(
holiday_ind$day[is.na(test_data$day)],
NA_Date_
)
expect_equal(
holiday_ind$day_ChristmasDay[is.na(test_data$day)],
NA_integer_
)
expect_equal(
holiday_ind$day_USMemorialDay[is.na(test_data$day)],
NA_integer_
)
expect_equal(
holiday_ind$day_Easter[is.na(test_data$day)],
NA_integer_
)
})
test_that("Date class", {
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(),
holidays = exp_dates$holiday,
keep_original_cols = FALSE)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data, all_predictors())
expect_true(all(vapply(holiday_ind, is.integer, logical(1))))
})
test_that("works with no missing values - Date class", {
test_data <- na.omit(test_data)
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(), holidays = exp_dates$holiday)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_USMemorialDay)],
exp_dates$date[exp_dates$holiday == "USMemorialDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_ChristmasDay)],
exp_dates$date[exp_dates$holiday == "ChristmasDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_Easter)],
exp_dates$date[exp_dates$holiday == "Easter"]
)
})
test_that("POSIXct class", {
test_data$day <- lubridate::as_datetime(test_data$day, tz = "UTC")
exp_dates$date <- lubridate::as_datetime(exp_dates$date, tz = "UTC")
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(), holidays = exp_dates$holiday)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_USMemorialDay)],
exp_dates$date[exp_dates$holiday == "USMemorialDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_ChristmasDay)],
exp_dates$date[exp_dates$holiday == "ChristmasDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_Easter)],
exp_dates$date[exp_dates$holiday == "Easter"]
)
expect_equal(
holiday_ind$day[is.na(test_data$day)],
as.POSIXct(NA, tz = "UTC")
)
expect_equal(
holiday_ind$day_ChristmasDay[is.na(test_data$day)],
NA_integer_
)
expect_equal(
holiday_ind$day_USMemorialDay[is.na(test_data$day)],
NA_integer_
)
expect_equal(
holiday_ind$day_Easter[is.na(test_data$day)],
NA_integer_
)
})
test_that("Date class", {
test_data$day <- as.POSIXct(test_data$day)
exp_dates$date <- as.POSIXct(exp_dates$date)
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(),
holidays = exp_dates$holiday,
keep_original_cols = FALSE)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data, all_predictors())
expect_true(all(vapply(holiday_ind, is.integer, logical(1))))
})
test_that("works with no missing values - POSIXct class", {
test_data <- na.omit(test_data)
test_data$day <- as.POSIXct(test_data$day)
exp_dates$date <- as.POSIXct(exp_dates$date)
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(), holidays = exp_dates$holiday)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_USMemorialDay)],
exp_dates$date[exp_dates$holiday == "USMemorialDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_ChristmasDay)],
exp_dates$date[exp_dates$holiday == "ChristmasDay"]
)
expect_equal(
holiday_ind$day[is_equal_1(holiday_ind$day_Easter)],
exp_dates$date[exp_dates$holiday == "Easter"]
)
})
test_that("printing", {
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(), holidays = exp_dates$holiday)
expect_snapshot(print(holiday_rec))
expect_snapshot(prep(holiday_rec))
})
test_that("keep_original_cols works", {
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(),
holidays = exp_dates$holiday,
keep_original_cols = FALSE
)
holiday_rec <- prep(holiday_rec, training = test_data)
holiday_ind <- bake(holiday_rec, test_data)
expect_equal(
colnames(holiday_ind),
c(
"day_ChristmasDay",
"day_USMemorialDay",
"day_Easter"
)
)
})
test_that("can prep recipes with no keep_original_cols", {
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(all_predictors(), holidays = exp_dates$holiday)
holiday_rec$steps[[1]]$keep_original_cols <- NULL
expect_snapshot(
holiday_rec <- prep(holiday_rec, training = test_data, verbose = FALSE)
)
expect_error(
holiday_ind <- bake(holiday_rec, new_data = test_data, all_predictors()),
NA
)
})
test_that("empty selection prep/bake is a no-op", {
rec1 <- recipe(mpg ~ ., mtcars)
rec2 <- step_holiday(rec1)
rec1 <- prep(rec1, mtcars)
rec2 <- prep(rec2, mtcars)
baked1 <- bake(rec1, mtcars)
baked2 <- bake(rec2, mtcars)
expect_identical(baked1, baked2)
})
test_that("empty selection tidy method works", {
rec <- recipe(mpg ~ ., mtcars)
rec <- step_holiday(rec)
expect <- tibble(terms = character(), holiday = character(), id = character())
expect_identical(tidy(rec, number = 1), expect)
rec <- prep(rec, mtcars)
expect_identical(tidy(rec, number = 1), expect)
})
test_that("empty printing", {
skip_if(packageVersion("rlang") < "1.0.0")
rec <- recipe(mpg ~ ., mtcars)
rec <- step_holiday(rec)
expect_snapshot(rec)
rec <- prep(rec, mtcars)
expect_snapshot(rec)
})
test_that("bake method errors when needed non-standard role columns are missing", {
holiday_rec <- recipe(~day, test_data) %>%
step_holiday(day, holidays = exp_dates$holiday) %>%
update_role(day, new_role = "potato") %>%
update_role_requirements(role = "potato", bake = FALSE)
holiday_rec <- prep(holiday_rec, training = test_data)
expect_error(bake(holiday_rec, exp_dates[, 2, drop = FALSE]),
class = "new_data_missing_column")
})
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