test_that("portion works", {
library(recipes)
df <- tibble(x = 1, t = as.POSIXct(1:10, origin = '1970-01-01'))
freqs <- c(1,2)
# lags numeric data
expect_error({recipe(~ ., data = df) %>%
step_harmonic(t, freq = freqs) %>%
portion()})
expect_error({recipe(~ ., data = df) %>%
step_harmonic(t, freq = freqs) %>%
prep(retain = FALSE) %>%
portion()})
})
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