Refactor get_quos_name() and add tests for tidyr_helpers

R/tidyr_helpers.R

 #' get_quos_names(-x)
 #' get_quos_names(x:y)
 get_quos_names <- function(...) {
-  q <- quos(...)
-  sapply(q, function(i) as.character(i[[2]]))
+  q <- rlang::quos(...)
+  purrr::map_chr(q, rlang::quo_name)
 }
 
 #' Parses a simple vector so that it looks like its input

tests/testthat/test-tidyr_helpers.R

+context("test-tidyr_helpers")
+
+test_that("get_quos_names works", {
+  expect_equivalent(get_quos_names(-x), "-x")
+  expect_equivalent(get_quos_names(x:y), "x:y")
+  expect_equivalent(get_quos_names(-x, -y, -z), c("-x", "-y", "-z"))
+})