```
library(LRO.utilities)
context("polynomializer()")
test_that("polynomializer creates the right columns with vectors", {
vect <- c(1,3,5,7,8)
expect_equal(polynomializer(vect, degree = 3),
data.frame(vect = c(1,3,5,7,8),
vect_2 = vect^2,
vect_3 = vect^3))
expect_equal(polynomializer(vect, degree = 3, up_to=F),
data.frame(vect = c(1,3,5,7,8),
vect_3 = vect^3))
expect_error(polynomializer(vect, cols = c('bect','dect'), degree = 3),
"data is vector, argument 'cols' must be NULL", fixed = T)
})
test_that("polynomializer creates the right columns with dataframes", {
vect <- c(1,3,5,7,8)
data <- data.frame(vect = c(1,3,5,7,8),
bect = vect*3,
dect = vect*5)
expect_equal(polynomializer(data, cols = c('bect','dect'), degree = 3),
data.frame(vect = c(1,3,5,7,8),
bect = c(3,9,15,21,24),
dect = c(5,15,25,35,40),
bect_2 = c(9,81,225,441,576),
bect_3 = c(27,729,3375,9261,13824),
dect_2 = c(25,225,625,1225,1600),
dect_3 = c(125,3375,15625,42875,64000)))
expect_equal(polynomializer(data, cols = c('bect','dect'), degree = 3, up_to = F),
data.frame(vect = c(1,3,5,7,8),
bect = c(3,9,15,21,24),
dect = c(5,15,25,35,40),
bect_3 = c(27,729,3375,9261,13824),
dect_3 = c(125,3375,15625,42875,64000)))
expect_error(polynomializer(data, degree = 3),
"data is dataframe, argument 'cols' must be specified", fixed = T)
# Try with summarized_data that is saved to project
# This had the error that merging of input data and generated data
# went wrong. So changed it to cbind.
expect_equal(nrow(polynomializer(summarized_data, col = "trial", degree = 2)), 240)
})
```

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