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

from time import time
from math import floor

class TestAnonVDF(unittest.TestCase):
    def test_vdf_create(self):
        test_data = kasten.generator.pack.pack(b"test", "tst", 0)
        test_vdf = mimcvdf.vdf_create(test_data, 1000, dec=True)

        generated = anonvdf.AnonVDFGenerator.generate(test_data, rounds=1000)
        self.assertEqual(
            generated.get_packed(),
            test_data
        )
        self.assertEqual(generated.id, int(test_vdf).to_bytes(64, byteorder="big"))

    def test_vdf_block_validate_ok_time(self):
        rds = 90000
        test_data = kasten.generator.pack.pack(b"test", "tst", 0)
        rds += len(test_data) * 1000
        test_id = mimcvdf.vdf_create(test_data, rds)
        anonvdf.AnonVDFGenerator.validate_id(test_id, test_data, rounds=rds)

    def test_vdf_block_validate_not_enough(self):
        rds = 90000
        t = floor(time()) - 60
        test_data = kasten.generator.pack.pack(b"test", "tst", 0, timestamp=t)
        test_id = mimcvdf.vdf_create(test_data, rds)
        self.assertRaises(ValueError, anonvdf.AnonVDFGenerator.validate_id, test_id, test_data, rounds=rds)

    def test_vdf_incermental(self):
        last = 1
        for i in range(1, 20):
            t = time()
            rds = 90000
            test_data = kasten.generator.pack.pack(b"test" * i, "tst", 0)
            rds += len(test_data) * 1000
            test_id = mimcvdf.vdf_create(test_data, rds)
            anonvdf.AnonVDFGenerator.validate_id(test_id, test_data, rounds=rds)
            newT = time()
            self.assertGreater(newT - t, last)


unittest.main()