Nothing
y <- matrix(
data = c(1,1,
2,0,
3,1,
4,0,
5,1,
6,1),
byrow = TRUE,
ncol = 2
)
x <- matrix(
data = c(1, 2, 3, 1,
1, 0, 4, 1,
1, 2, 5, 3,
1, 0, 6, 3,
1, 2, 7, 4,
1, 2, 8, 4),
byrow = TRUE,
ncol = 4
)
test_that(
desc = "constant columns are detected in X matrix",
code = {
# include all rows
# column 1 is constant everywhere -> return value should be FALSE
# column 2 is constant where events occurred -> return value should be FALSE
# column 3 is unique everywhere -> return value should be TRUE
# column 4 is unique where events occurred -> return value should be TRUE
answers <- c(FALSE, FALSE, TRUE, TRUE)
for(j in seq(ncol(x))){
expect_equal(
is_col_splittable_exported(x, y, r = seq(0, nrow(x)-1), j-1),
answers[j]
)
}
# same deal if you just include event rows
for(j in seq(ncol(x))){
expect_equal(
is_col_splittable_exported(x, y, r = c(0, 2, 4, 5), j-1),
answers[j]
)
}
# all cols should be not splittable if you remove rows with events
for(j in seq(ncol(x))){
expect_equal(
is_col_splittable_exported(x, y, r = c(1, 3), j-1),
FALSE
)
}
}
)
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