import unittest
from onionrblocks import universalrules
from onionrblocks.generators import anonvdf
import kasten

from time import time
from math import floor

class TestUniversalRules(unittest.TestCase):

    def test_block_is_sane_max_size(self):
        packed = kasten.generator.pack.pack(b"1"*1000000000, b"tst", 0)
        self.assertRaises(
            universalrules.BlockTooLarge,
            universalrules.check_block_sanity, packed)

    def test_block_future_skew_ok(self):
        t = floor(time()) + 120
        packed = kasten.generator.pack.pack(b"1"*10, b"tst", timestamp=t)
        universalrules.check_block_sanity(packed)

    def test_block_future_skew_not_ok(self):
        t = floor(time()) + 121
        packed = kasten.generator.pack.pack(b"1"*10, b"tst", timestamp=t)
        self.assertRaises(
            universalrules.BlockFutureSkewedBeyondMax,
            universalrules.check_block_sanity, packed)

    def test_block_not_expired(self):
        packed = kasten.generator.pack.pack(b"1"*10, b"tst", app_metadata={"expire": 7})
        self.assertRaises(
            universalrules.BlockExpired,
            universalrules.check_block_sanity, packed)

    def test_block_expired(self):
        t = floor(time()) - 6
        packed = kasten.generator.pack.pack(b"1"*10, b"tst", timestamp=t, app_metadata={"expire": 6})
        self.assertRaises(
            universalrules.BlockExpired,
            universalrules.check_block_sanity, packed)

    def test_not_in_set(self):
        t = floor(time()) - 6
        bls = []
        for i in range(3):
            packed = kasten.generator.pack.pack(b"1"*2*i, b"tst", timestamp=t, app_metadata={"ttl": 10000})
            k = anonvdf.AnonVDFGenerator.generate(packed, 10000)
            bls.append(k.id)
        packed = kasten.generator.pack.pack(b"1"*2*1, b"tst", timestamp=t, app_metadata={"ttl": 10000})
        k = anonvdf.AnonVDFGenerator.generate(packed, 1000)
        self.assertRaises(universalrules.BlockExistsError, universalrules.checksum_exists_in_list, k.id, bls)


unittest.main()