Nothing
test_arrow_vbind <- function() {
d <- data.frame(
x = c(1, 2, 3, 4, 5, 6),
y = c(2, 2, 2, 3, 7, 10),
g = c('a', 'a', 'a', 'b', 'b' ,'b'),
stringsAsFactors = FALSE
)
scale <- 5
ops <- d %.>%
wrap %.>% # wrap data in a description
extend(., # add a new column
ratio := scale * y / x) %.>%
extend(., # rank the rows by group and order
simple_rank := row_number(),
partitionby = 'g',
orderby = 'ratio',
reverse = 'ratio') %.>%
extend(., # mark the rows we want
choice := simple_rank == 1)
str <- format(ops)
expect_true(length(grep('scale', str, fixed = TRUE))==0)
expect_true(length(grep('t', str, fixed = TRUE))==1)
if(requireNamespace('rqdatatable', quietly = TRUE)) {
res <- ex(ops)
expect_true(is.data.frame(res))
}
invisible(NULL)
}
test_arrow_vbind()
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