Nothing
test_that("crate() supports lambda syntax", {
expect_equal(
crate(~NULL),
new_crate(as_function(~NULL, env = current_env())),
ignore_function_env = TRUE
)
})
test_that("crate() requires named `...` arguments", {
expect_snapshot(
error = TRUE,
crate(function(x) identity(x), x = 1, y = 2, 3),
)
expect_no_error(crate(function(x) identity(x), x = 1, y = 2))
expect_no_error(crate(function(x) identity(x)))
})
test_that("crate() requires functions", {
expect_snapshot(error = TRUE, crate(1))
})
test_that("crate() supports quasiquotation", {
foo <- "foo"
fn <- crate(function() toupper(!!foo))
expect_identical(body(fn), quote(toupper("foo")))
expect_identical(fn(), "FOO")
fn <- crate(~ toupper(!!foo))
expect_identical(body(fn), quote(toupper("foo")))
expect_identical(fn(), "FOO")
})
test_that("can supply data", {
fn <- crate(~ toupper(foo), foo = "foo")
expect_identical(fn(), "FOO")
foo <- "foo"
fn <- crate(~ toupper(foo), foo = foo)
expect_identical(fn(), "FOO")
})
test_that("can supply data before or after function", {
foo <- "foo"
fn <- crate(foo = foo, ~ toupper(foo))
expect_identical(fn(), "FOO")
})
test_that("fails if relevant data not supplied", {
foobar <- "foobar"
fn <- crate(foo = "foo", ~ toupper(foobar))
expect_error(fn(), "not found")
})
test_that("can supply data in a block", {
fn <- crate({
foo <- "foo"
bar <- "bar"
~ paste(foo, bar)
})
expect_data(fn, "foo", "bar")
})
test_that("crated function roundtrips under serialisation", {
fn <- crate(~ toupper(foo), foo = "foo")
out <- unserialize(serialize(fn, NULL))
expect_equal(as.list(fn_env(fn)), as.list(fn_env(out)))
expect_equal(fn(), out())
})
test_that("new_crate() requires functions", {
expect_snapshot(error = TRUE, new_crate(1))
expect_snapshot(error = TRUE, new_crate(~foo))
})
test_that("new_crate() crates", {
expect_s3_class(new_crate(function() NULL), "crate")
})
test_that("sizes are printed with the crate", {
foo <- "foo"
bar <- 1:100
fn <- crate(~NULL, foo = foo, bar = bar)
bare_fn <- fn
attributes(bare_fn) <- NULL
environment(bare_fn) <- global_env()
bare_size <- format_bytes(lobstr::obj_size(bare_fn))
bar_size <- format_bytes(lobstr::obj_size(bar))
foo_size <- format_bytes(lobstr::obj_size(foo))
output <- "
* function: %s
* `bar`: %s
* `foo`: %s"
output <- sprintf(output, bare_size, bar_size, foo_size)
expect_output(print(fn), output, fixed = TRUE)
})
test_that("empty crates are printed correctly", {
fn <- crate(~NULL)
bare_fn <- fn
attributes(bare_fn) <- NULL
environment(bare_fn) <- global_env()
bare_size <- format_bytes(lobstr::obj_size(bare_fn))
output <- "
* function: %s
function"
output <- sprintf(output, bare_size)
expect_output(print(fn), output, fixed = TRUE)
})
test_that("function must be defined in the crate environment", {
fn <- function() NULL
expect_snapshot(error = TRUE, crate(fn))
expect_s3_class(crate(set_env(fn)), "crate")
})
test_that("helper functions can be passed via `...`", {
really_do_it <- function() "foo"
do_it <- function(x) really_do_it()
environment(really_do_it) <- environment(do_it) <- globalenv()
fn <- crate(function(x) do_it(x), do_it = do_it, really_do_it = really_do_it)
expect_equal(fn(), "foo")
})
test_that("closures passed via `...` are switched to the local env", {
fn <- function() {
foo <- "bar"
foo_fn <- function(x) foo
do_fn <- crate(function(x) foo_fn(x), foo_fn = foo_fn)
do_fn()
}
expect_snapshot(error = TRUE, fn())
})
test_that("`...` objects are not checked recursively for closures", {
# Same as above test but wraps the function in a list. We intentionally do
# not attempt to check for functions recursively in containers such as lists.
fn <- function() {
foo <- "bar"
foo_list <- list(fn = function(x) foo)
do_fn <- crate(function(x) foo_list$fn(x), foo_list = foo_list)
do_fn()
}
expect_equal(fn(), "bar")
})
test_that("closures passed via `...` are not switched for package functions", {
fn <- crate(function(x) format_bytes(x), format_bytes = format_bytes)
expect_identical(fn(123), format_bytes(123))
})
test_that("crates passed to `...` are not re-crated", {
fn2 <- crate(function(x) format_bytes(x), format_bytes = format_bytes)
fn <- crate(function(x) fn2(x), fn2 = fn2)
expect_identical(fn(123), format_bytes(123))
})
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