mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
71 lines
1.6 KiB
V
71 lines
1.6 KiB
V
import time
|
|
import rand
|
|
|
|
// uuid_v4:
|
|
fn test_rand_uuid_v4() {
|
|
uuid1 := rand.uuid_v4()
|
|
uuid2 := rand.uuid_v4()
|
|
uuid3 := rand.uuid_v4()
|
|
assert uuid1 != uuid2
|
|
assert uuid1 != uuid3
|
|
assert uuid2 != uuid3
|
|
assert uuid1.len == 36
|
|
assert uuid2.len == 36
|
|
assert uuid3.len == 36
|
|
assert uuid1[14] == `4`
|
|
assert uuid2[14] == `4`
|
|
assert uuid3[14] == `4`
|
|
}
|
|
|
|
// ulids:
|
|
fn test_ulids_are_unique() {
|
|
ulid1 := rand.ulid()
|
|
ulid2 := rand.ulid()
|
|
ulid3 := rand.ulid()
|
|
assert ulid1.len == 26
|
|
assert ulid2.len == 26
|
|
assert ulid3.len == 26
|
|
assert ulid1 != ulid2
|
|
assert ulid1 != ulid3
|
|
assert ulid2 != ulid3
|
|
}
|
|
|
|
fn test_ulids_max_start_character_is_ok() {
|
|
ulid1 := rand.ulid()
|
|
// the largest valid ULID encoded in Base32 is 7ZZZZZZZZZZZZZZZZZZZZZZZZZ
|
|
assert (int(ulid1[0]) - 48) <= 7
|
|
}
|
|
|
|
fn test_ulids_generated_in_the_same_millisecond_have_the_same_prefix() {
|
|
t := u64(time.utc().unix_time_milli())
|
|
mut ulid1 := ''
|
|
mut ulid2 := ''
|
|
mut ulid3 := ''
|
|
ulid1 = rand.ulid_at_millisecond(t)
|
|
ulid2 = rand.ulid_at_millisecond(t)
|
|
ulid3 = rand.ulid_at_millisecond(t)
|
|
ulid1_prefix := ulid1[0..10]
|
|
ulid2_prefix := ulid2[0..10]
|
|
ulid3_prefix := ulid3[0..10]
|
|
assert ulid1_prefix == ulid2_prefix
|
|
assert ulid1_prefix == ulid3_prefix
|
|
}
|
|
|
|
fn test_ulids_should_be_lexicographically_ordered_when_not_in_same_millisecond() {
|
|
ulid1 := rand.ulid()
|
|
time.sleep(1 * time.millisecond)
|
|
ulid2 := rand.ulid()
|
|
time.sleep(1 * time.millisecond)
|
|
ulid3 := rand.ulid()
|
|
mut all := [ulid3, ulid2, ulid1]
|
|
// eprintln('all before: $all')
|
|
all.sort()
|
|
// eprintln('all after: $all')
|
|
s1 := all[0]
|
|
s2 := all[1]
|
|
s3 := all[2]
|
|
assert s1 == ulid1
|
|
assert s2 == ulid2
|
|
assert s3 == ulid3
|
|
}
|