context("local")
test_that("local_envvar sets and unsets variables", {
# Make sure the "set_env_testvar" environment var is not set.
Sys.unsetenv("set_env_testvar")
expect_false("set_env_testvar" %in% names(Sys.getenv()))
# Use local_envvar (which calls set_envvar) to temporarily set it to 1
local({
local_envvar(c("set_env_testvar" = 1))
expect_identical("1", Sys.getenv("set_env_testvar"))
})
# set_env_testvar shouldn't stay in the list of environment vars
expect_false("set_env_testvar" %in% names(Sys.getenv()))
})
test_that("local_envar respects suffix and prefix", {
nested <- function(op1, op2) {
local({
local_envvar(c(A = 1), action = op1)
local({
local_envvar(c(A = 2), action = op2)
Sys.getenv("A")[[1]]
})
})
}
expect_equal(nested("replace", "suffix"), c("1 2"))
expect_equal(nested("replace", "prefix"), c("2 1"))
expect_equal(nested("prefix", "suffix"), c("1 2"))
expect_equal(nested("prefix", "prefix"), c("2 1"))
expect_equal(nested("suffix", "suffix"), c("1 2"))
expect_equal(nested("suffix", "prefix"), c("2 1"))
})
test_that("local_options works", {
expect_false(getOption("scipen") == 999)
local({
local_options(c(scipen=999))
expect_equal(getOption("scipen"), 999)
})
expect_false(getOption("scipen") == 999)
expect_false(identical(getOption("zyxxyzyx"), "qwrbbl"))
local({
local_options(c(zyxxyzyx="qwrbbl"))
expect_equal(getOption("zyxxyzyx"), "qwrbbl")
})
expect_false(identical(getOption("zyxxyzyx"), "qwrbbl"))
})
test_that("local_libpaths works and resets library", {
lib <- .libPaths()
new_lib <- "."
local({
local_libpaths(new_lib)
expect_equal(normalizePath(new_lib), normalizePath(.libPaths()[[1L]]))
})
expect_equal(lib, .libPaths())
})
test_that("local_temp_libpaths works and resets library", {
lib <- .libPaths()
local({
local_temp_libpaths()
expect_equal(.libPaths()[-1], lib)
})
expect_equal(lib, .libPaths())
})
test_that("local_ works", {
res <- NULL
set <- function(new) {
res <<- c(res, 1L)
}
reset <- function(old) {
res <<- c(res, 3L)
}
local_res <- local_(set, reset)
local({
local_res(NULL)
res <<- c(res, 2L)
})
expect_equal(res, 1L:3L)
})
test_that("local_ works on functions without arguments", {
res <- NULL
set <- function() {
res <<- c(res, 1L)
}
reset <- function(x) {
res <<- c(res, 3L)
}
local_res <- local_(set, reset)
local({
local_res()
res <<- c(res, 2L)
})
expect_equal(res, 1L:3L)
})
test_that("local_path works and resets path", {
current <- normalizePath(get_path(), mustWork = FALSE)
new_path <- normalizePath(".")
local({
local_path(new_path)
expect_equal(normalizePath(new_path), head(get_path(), n = 1))
expect_equal(length(get_path()), length(current) + 1L)
})
expect_equal(current, get_path())
})
test_that("local_path with suffix action works and resets path", {
current <- normalizePath(get_path(), mustWork = FALSE)
new_path <- normalizePath(".")
local({
local_path(new_path, action = "suffix")
expect_equal(normalizePath(new_path), tail(get_path(), n = 1))
expect_equal(length(get_path()), length(current) + 1L)
})
expect_equal(current, get_path())
})
test_that("local_path with replace action works and resets path", {
current <- normalizePath(get_path(), mustWork = FALSE)
new_path <- normalizePath(".")
local({
local_path(new_path, action = "replace")
expect_equal(normalizePath(new_path), get_path())
expect_equal(length(get_path()), 1L)
})
expect_equal(current, get_path())
})
test_that("local_libpaths works and resets library", {
lib <- .libPaths()
new_lib <- "."
local({
local_libpaths(new_lib)
expect_equal(normalizePath(new_lib), normalizePath(.libPaths()[[1L]], mustWork = FALSE))
})
expect_equal(lib, .libPaths())
})
test_that("local_locale works and resets locales", {
current <- Sys.getlocale("LC_CTYPE")
new <- "C"
local({
local_locale(c(LC_CTYPE = new))
expect_equal(new, Sys.getlocale("LC_CTYPE"))
})
expect_equal(current, Sys.getlocale("LC_CTYPE"))
})
test_that("local_locale fails with LC_ALL", {
local({
expect_error(local_locale(c(LC_ALL = "C")), "LC_ALL")
})
})
test_that("local_collate works and resets collate", {
current <- Sys.getlocale("LC_COLLATE")
new <- "C"
local({
local_collate(new)
expect_equal(new, Sys.getlocale("LC_COLLATE"))
})
expect_equal(current, Sys.getlocale("LC_COLLATE"))
})
test_that("local_makevars works and resets the Makevars file", {
current <- tempfile()
writeLines(con = current, c("CFLAGS=-03"), sep = "\n")
new <- c(CFLAGS = "-O0")
local({
local_makevars(new, path = current)
expect_equal("CFLAGS=-O0", readLines(Sys.getenv("R_MAKEVARS_USER")))
})
expect_equal("CFLAGS=-03", readLines(current))
})
test_that("local_makevars changes only the defined variables", {
current_name <- tempfile()
current <- c("CFLAGS=-03", "LDFLAGS=-lz")
writeLines(con = current_name, current, sep = "\n")
new <- c(CFLAGS = "-O0")
local({
local_makevars(new, path = current_name)
expect_equal(c("CFLAGS=-O0", "LDFLAGS=-lz"), readLines(Sys.getenv("R_MAKEVARS_USER")))
})
expect_equal(current, readLines(current_name))
})
test_that("local_makevars works with alternative assignments", {
current <- tempfile()
writeLines(con = current, c("CFLAGS=-03"), sep = "\n")
new <- c(CFLAGS = "-O0")
local({
local_makevars(new, path = current, assignment = "+=")
expect_equal("CFLAGS+=-O0", readLines(Sys.getenv("R_MAKEVARS_USER")))
})
expect_equal("CFLAGS=-03", readLines(current))
})
test_that("local_dir works as expected", {
old <- normalizePath(getwd())
local({
local_dir("..")
expect_equal(normalizePath(getwd()), normalizePath(file.path(old, "..")))
})
expect_equal(normalizePath(getwd()), normalizePath(old))
})
test_that("local_par works as expected", {
tmp <- tempfile()
pdf(tmp)
on.exit(unlink(tmp), add = TRUE)
old <- par("pty")
local({
local_par(list(pty = "s"))
expect_equal(par("pty"), "s")
})
expect_equal(par("pty"), old)
dev.off()
})
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