/usr/share/doc/r-cran-dplyr/tests/testthat/test-colwise-select.R is in r-cran-dplyr 0.7.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | context("colwise select")
df <- data_frame(x = 0L, y = 0.5, z = 1)
test_that("can select/rename all variables", {
expect_identical(select_all(df), df)
expect_error(
rename_all(df),
"`.funs` must specify a renaming function",
fixed = TRUE
)
expect_identical(select_all(df, toupper), set_names(df, c("X", "Y", "Z")))
expect_identical(select_all(df, toupper), rename_all(df, toupper))
})
test_that("can select/rename with predicate", {
expect_identical(select_if(df, is_integerish), select(df, x, z))
expect_error(
rename_if(df, is_integerish),
"`.funs` must specify a renaming function",
fixed = TRUE
)
expect_identical(select_if(df, is_integerish, toupper), set_names(df[c("x", "z")], c("X", "Z")))
expect_identical(rename_if(df, is_integerish, toupper), set_names(df, c("X", "y", "Z")))
})
test_that("can supply funs()", {
expect_identical(select_if(df, funs(is_integerish(.)), funs(toupper(.))), set_names(df[c("x", "z")], c("X", "Z")))
expect_identical(rename_if(df, funs(is_integerish(.)), funs(toupper(.))), set_names(df, c("X", "y", "Z")))
})
test_that("fails when more than one renaming function is supplied", {
expect_error(
select_all(df, funs(tolower, toupper)),
"`.funs` must contain one renaming function, not 2",
fixed = TRUE
)
expect_error(
rename_all(df, funs(tolower, toupper)),
"`.funs` must contain one renaming function, not 2",
fixed = TRUE
)
})
test_that("can select/rename with vars()", {
expect_identical(select_at(df, vars(x:y)), df[-3])
expect_error(
rename_at(df, vars(x:y)),
"`.funs` must specify a renaming function",
fixed = TRUE
)
expect_identical(select_at(df, vars(x:y), toupper), set_names(df[-3], c("X", "Y")))
expect_identical(rename_at(df, vars(x:y), toupper), set_names(df, c("X", "Y", "z")))
})
test_that("select_if keeps grouping cols", {
expect_silent(df <- iris %>% group_by(Species) %>% select_if(is.numeric))
expect_equal(df, tbl_df(iris[c(5, 1:4)]))
})
test_that("select_if() handles non-syntactic colnames", {
df <- data_frame(`x 1` = 1:3)
expect_identical(select_if(df, is_integer)[[1]], 1:3)
})
test_that("select_if() handles quoted predicates", {
expected <- select_if(mtcars, is_integerish)
expect_identical(select_if(mtcars, "is_integerish"), expected)
expect_identical(select_if(mtcars, ~is_integerish(.x)), expected)
})
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