Nothing
test_that("low-level constructor provides the desired structure", {
hash_fn <- default_hash_fn
compare_fn <- identical
key_preproc_fn <- identity
t <- new_hashtable(hash_fn, compare_fn, key_preproc_fn)
expect_s3_class(t, "r2r_hashtable")
expect_true(is.list(t)) # R object is an empty list
expect_true(is.environment(attr(t, "keys")))
expect_true(is.function(attr(t, "hash_fn")))
expect_true(is.function(attr(t, "compare_fn")))
})
test_that("low-level constructor correctly assigns hash and compare fn's", {
hash_fn <- default_hash_fn
compare_fn <- identical
key_preproc_fn <- Arg
t <- new_hashtable(hash_fn, compare_fn, key_preproc_fn)
exp_hash_fn <- function(x)
hash_fn(key_preproc_fn(x))
exp_compare_fn <- function(x, y)
compare_fn(key_preproc_fn(x), key_preproc_fn(y))
# Fix defining environment of expectations
environment(exp_hash_fn) <- environment(attr(t, "hash_fn"))
environment(exp_compare_fn) <- environment(attr(t, "compare_fn"))
expect_identical(attr(t, "hash_fn"), exp_hash_fn)
expect_identical(attr(t, "compare_fn"), exp_compare_fn)
})
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