tests/testthat/test-step_dummy.R

In orbital: Predict with 'tidymodels' Workflows in Databases

test_that("step_dummy works", {
	skip_if_not_installed("recipes")

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors()) %>%
		recipes::prep()

	exp <- recipes::bake(rec, new_data = mtcars1)

	res <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))
	res <- res[names(exp)]

	expect_equal(res, exp)
})

test_that("step_dummy works with `one_hot = TRUE`", {
	skip_if_not_installed("recipes")

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors(), one_hot = TRUE) %>%
		recipes::prep()

	exp <- recipes::bake(rec, new_data = mtcars1)

	res <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))
	res <- res[names(exp)]

	expect_equal(res, exp)
})

test_that("step_dummy only calculates what is sufficient", {
	skip_if_not_installed("recipes")

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors()) %>%
		recipes::step_rm(dplyr::ends_with("4")) %>%
		recipes::prep()

	exp <- recipes::bake(rec, new_data = mtcars1)

	res <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))
	res <- res[names(exp)]

	expect_equal(res, exp)
})

test_that("step_dummy works with empty selections", {
	skip_if_not_installed("recipes")

	mtcars <- dplyr::as_tibble(mtcars)

	rec <- recipes::recipe(mpg ~ ., data = mtcars) %>%
		recipes::step_dummy() %>%
		recipes::prep()

	exp <- recipes::bake(rec, new_data = mtcars)

	res <- dplyr::mutate(mtcars, !!!orbital_inline(orbital(rec)))
	res <- res[names(exp)]

	expect_equal(res, exp)
})

test_that("spark - step_dummy works", {
	skip_if_not_installed("recipes")
	skip_if_not_installed("sparklyr")
	skip_if(is.na(testthat_spark_env_version()))

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors()) %>%
		recipes::prep()

	exp <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))

	sc <- testthat_spark_connection()
	mtcars_tbl <- testthat_tbl("mtcars1")

	res_new <- dplyr::mutate(mtcars_tbl, !!!orbital_inline(orbital(rec))) %>%
		dplyr::collect()

	expect_equal(res_new, exp)
})

test_that("SQLite - step_dummy works", {
	skip_if_not_installed("recipes")
	skip_if_not_installed("DBI")
	skip_if_not_installed("RSQLite")
	skip_on_cran()

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors()) %>%
		recipes::prep()

	exp <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))

	con <- DBI::dbConnect(RSQLite::SQLite(), path = ":memory:")
	mtcars_tbl <- dplyr::copy_to(con, mtcars1)

	res_new <- dplyr::mutate(mtcars_tbl, !!!orbital_inline(orbital(rec))) %>%
		dplyr::collect()

	expect_equal(res_new, exp)

	DBI::dbDisconnect(con)
})

test_that("duckdb - step_dummy works", {
	skip_if_not_installed("recipes")
	skip_if_not_installed("DBI")
	skip_if_not_installed("duckdb")

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors()) %>%
		recipes::prep()

	exp <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))

	con <- DBI::dbConnect(duckdb::duckdb(dbdir = ":memory:"))
	mtcars_tbl <- dplyr::copy_to(con, mtcars1)

	res_new <- dplyr::mutate(mtcars_tbl, !!!orbital_inline(orbital(rec))) %>%
		dplyr::collect()

	expect_equal(res_new, exp)

	DBI::dbDisconnect(con)
})

test_that("arrow - step_dummy works", {
	skip_if_not_installed("recipes")
	skip_if_not_installed("arrow")

	mtcars1 <- dplyr::as_tibble(mtcars)

	mtcars1$gear <- as.character(mtcars1$gear)
	mtcars1$carb <- as.character(mtcars1$carb)

	rec <- recipes::recipe(mpg ~ ., data = mtcars1) %>%
		recipes::step_dummy(recipes::all_nominal_predictors()) %>%
		recipes::prep()

	exp <- dplyr::mutate(mtcars1, !!!orbital_inline(orbital(rec)))

	mtcars_tbl <- arrow::as_arrow_table(mtcars1)

	res_new <- dplyr::mutate(mtcars_tbl, !!!orbital_inline(orbital(rec))) %>%
		dplyr::collect()

	expect_equal(res_new, exp)
})