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# frozen_string_literal: true
require_relative 'helper'
class TestUUID < Test::Unit::TestCase
include DeterministicHelper
assert_methods_are_deterministic(
FFaker::UUID,
:uuidv4, :uuidv6, :uuidv7, :uuidv8
)
def setup
@tester = FFaker::UUID
end
# @see https://stackoverflow.com/a/38191104
def test_uuidv4
raw_uuid = @tester.uuidv4
assert_format(raw_uuid)
uuid = uuid_to_integer(raw_uuid)
assert_version(uuid, 0b0100)
assert_variant(uuid, 0b10)
end
def test_uuidv6
raw_uuid = @tester.uuidv6
assert_format(raw_uuid)
uuid = uuid_to_integer(raw_uuid)
assert_version(uuid, 0b0110)
assert_variant(uuid, 0b10)
end
def test_uuidv7
raw_uuid = @tester.uuidv7
assert_format(raw_uuid)
uuid = uuid_to_integer(raw_uuid)
assert_version(uuid, 0b0111)
assert_variant(uuid, 0b10)
end
def test_uuidv8
raw_uuid = @tester.uuidv8
assert_format(raw_uuid)
uuid = uuid_to_integer(raw_uuid)
assert_version(uuid, 0b1000)
assert_variant(uuid, 0b10)
end
private
# Matches structure of all UUID versions.
def assert_format(uuid)
assert_match(/\A[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[89ab][0-9a-f]{3}-[0-9a-f]{12}\z/,
uuid)
end
def assert_version(uuid, version)
assert_equal(version, (uuid >> 76) & 0b1111)
end
def assert_variant(uuid, variant)
assert_equal(variant, (uuid >> 62) & 0b11)
end
def uuid_to_integer(uuid)
uuid.delete('-').to_i(16)
end
end
|
