import uuid
from concurrent.futures import ThreadPoolExecutor

import pytest

import bcrypt

_test_vectors = [
    (
        b"Kk4DQuMMfZL9o",
        b"$2b$04$cVWp4XaNU8a4v1uMRum2SO",
        b"$2b$04$cVWp4XaNU8a4v1uMRum2SO026BWLIoQMD/TXg5uZV.0P.uO8m3YEm",
    ),
    (
        b"9IeRXmnGxMYbs",
        b"$2b$04$pQ7gRO7e6wx/936oXhNjrO",
        b"$2b$04$pQ7gRO7e6wx/936oXhNjrOUNOHL1D0h1N2IDbJZYs.1ppzSof6SPy",
    ),
    (
        b"xVQVbwa1S0M8r",
        b"$2b$04$SQe9knOzepOVKoYXo9xTte",
        b"$2b$04$SQe9knOzepOVKoYXo9xTteNYr6MBwVz4tpriJVe3PNgYufGIsgKcW",
    ),
    (
        b"Zfgr26LWd22Za",
        b"$2b$04$eH8zX.q5Q.j2hO1NkVYJQO",
        b"$2b$04$eH8zX.q5Q.j2hO1NkVYJQOM6KxntS/ow3.YzVmFrE4t//CoF4fvne",
    ),
    (
        b"Tg4daC27epFBE",
        b"$2b$04$ahiTdwRXpUG2JLRcIznxc.",
        b"$2b$04$ahiTdwRXpUG2JLRcIznxc.s1.ydaPGD372bsGs8NqyYjLY1inG5n2",
    ),
    (
        b"xhQPMmwh5ALzW",
        b"$2b$04$nQn78dV0hGHf5wUBe0zOFu",
        b"$2b$04$nQn78dV0hGHf5wUBe0zOFu8n07ZbWWOKoGasZKRspZxtt.vBRNMIy",
    ),
    (
        b"59je8h5Gj71tg",
        b"$2b$04$cvXudZ5ugTg95W.rOjMITu",
        b"$2b$04$cvXudZ5ugTg95W.rOjMITuM1jC0piCl3zF5cmGhzCibHZrNHkmckG",
    ),
    (
        b"wT4fHJa2N9WSW",
        b"$2b$04$YYjtiq4Uh88yUsExO0RNTu",
        b"$2b$04$YYjtiq4Uh88yUsExO0RNTuEJ.tZlsONac16A8OcLHleWFjVawfGvO",
    ),
    (
        b"uSgFRnQdOgm4S",
        b"$2b$04$WLTjgY/pZSyqX/fbMbJzf.",
        b"$2b$04$WLTjgY/pZSyqX/fbMbJzf.qxCeTMQOzgL.CimRjMHtMxd/VGKojMu",
    ),
    (
        b"tEPtJZXur16Vg",
        b"$2b$04$2moPs/x/wnCfeQ5pCheMcu",
        b"$2b$04$2moPs/x/wnCfeQ5pCheMcuSJQ/KYjOZG780UjA/SiR.KsYWNrC7SG",
    ),
    (
        b"vvho8C6nlVf9K",
        b"$2b$04$HrEYC/AQ2HS77G78cQDZQ.",
        b"$2b$04$HrEYC/AQ2HS77G78cQDZQ.r44WGcruKw03KHlnp71yVQEwpsi3xl2",
    ),
    (
        b"5auCCY9by0Ruf",
        b"$2b$04$vVYgSTfB8KVbmhbZE/k3R.",
        b"$2b$04$vVYgSTfB8KVbmhbZE/k3R.ux9A0lJUM4CZwCkHI9fifke2.rTF7MG",
    ),
    (
        b"GtTkR6qn2QOZW",
        b"$2b$04$JfoNrR8.doieoI8..F.C1O",
        b"$2b$04$JfoNrR8.doieoI8..F.C1OQgwE3uTeuardy6lw0AjALUzOARoyf2m",
    ),
    (
        b"zKo8vdFSnjX0f",
        b"$2b$04$HP3I0PUs7KBEzMBNFw7o3O",
        b"$2b$04$HP3I0PUs7KBEzMBNFw7o3O7f/uxaZU7aaDot1quHMgB2yrwBXsgyy",
    ),
    (
        b"I9VfYlacJiwiK",
        b"$2b$04$xnFVhJsTzsFBTeP3PpgbMe",
        b"$2b$04$xnFVhJsTzsFBTeP3PpgbMeMREb6rdKV9faW54Sx.yg9plf4jY8qT6",
    ),
    (
        b"VFPO7YXnHQbQO",
        b"$2b$04$WQp9.igoLqVr6Qk70mz6xu",
        b"$2b$04$WQp9.igoLqVr6Qk70mz6xuRxE0RttVXXdukpR9N54x17ecad34ZF6",
    ),
    (
        b"VDx5BdxfxstYk",
        b"$2b$04$xgZtlonpAHSU/njOCdKztO",
        b"$2b$04$xgZtlonpAHSU/njOCdKztOPuPFzCNVpB4LGicO4/OGgHv.uKHkwsS",
    ),
    (
        b"dEe6XfVGrrfSH",
        b"$2b$04$2Siw3Nv3Q/gTOIPetAyPr.",
        b"$2b$04$2Siw3Nv3Q/gTOIPetAyPr.GNj3aO0lb1E5E9UumYGKjP9BYqlNWJe",
    ),
    (
        b"cTT0EAFdwJiLn",
        b"$2b$04$7/Qj7Kd8BcSahPO4khB8me",
        b"$2b$04$7/Qj7Kd8BcSahPO4khB8me4ssDJCW3r4OGYqPF87jxtrSyPj5cS5m",
    ),
    (
        b"J8eHUDuxBB520",
        b"$2b$04$VvlCUKbTMjaxaYJ.k5juoe",
        b"$2b$04$VvlCUKbTMjaxaYJ.k5juoecpG/7IzcH1AkmqKi.lIZMVIOLClWAk.",
    ),
    (
        b"U*U",
        b"$2a$05$CCCCCCCCCCCCCCCCCCCCC.",
        b"$2a$05$CCCCCCCCCCCCCCCCCCCCC.E5YPO9kmyuRGyh0XouQYb4YMJKvyOeW",
    ),
    (
        b"U*U*",
        b"$2a$05$CCCCCCCCCCCCCCCCCCCCC.",
        b"$2a$05$CCCCCCCCCCCCCCCCCCCCC.VGOzA784oUp/Z0DY336zx7pLYAy0lwK",
    ),
    (
        b"U*U*U",
        b"$2a$05$XXXXXXXXXXXXXXXXXXXXXO",
        b"$2a$05$XXXXXXXXXXXXXXXXXXXXXOAcXxm9kjPGEMsLznoKqmqw7tc8WCx4a",
    ),
    (
        b"0123456789abcdefghijklmnopqrstuvwxyz"
        b"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
        b"chars after 72 are ignored",
        b"$2a$05$abcdefghijklmnopqrstuu",
        b"$2a$05$abcdefghijklmnopqrstuu5s2v8.iXieOjg/.AySBTTZIIVFJeBui",
    ),
    (
        b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
        b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
        b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
        b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
        b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
        b"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
        b"chars after 72 are ignored as usual",
        b"$2a$05$/OK.fbVrR/bpIqNJ5ianF.",
        b"$2a$05$/OK.fbVrR/bpIqNJ5ianF.swQOIzjOiJ9GHEPuhEkvqrUyvWhEMx6",
    ),
    (
        b"\xa3",
        b"$2a$05$/OK.fbVrR/bpIqNJ5ianF.",
        b"$2a$05$/OK.fbVrR/bpIqNJ5ianF.Sa7shbm4.OzKpvFnX1pQLmQW96oUlCq",
    ),
    (
        b"}>\xb3\xfe\xf1\x8b\xa0\xe6(\xa2Lzq\xc3P\x7f\xcc\xc8b{\xf9\x14\xf6"
        b"\xf6`\x81G5\xec\x1d\x87\x10\xbf\xa7\xe1}I7 \x96\xdfc\xf2\xbf\xb3Vh"
        b"\xdfM\x88q\xf7\xff\x1b\x82~z\x13\xdd\xe9\x84\x00\xdd4",
        b"$2b$10$keO.ZZs22YtygVF6BLfhGO",
        b"$2b$10$keO.ZZs22YtygVF6BLfhGOI/JjshJYPp8DZsUtym6mJV2Eha2Hdd.",
    ),
    (
        b"g7\r\x01\xf3\xd4\xd0\xa9JB^\x18\x007P\xb2N\xc7\x1c\xee\x87&\x83C"
        b"\x8b\xe8\x18\xc5>\x86\x14/\xd6\xcc\x1cJ\xde\xd7ix\xeb\xdeO\xef"
        b"\xe1i\xac\xcb\x03\x96v1' \xd6@.m\xa5!\xa0\xef\xc0(",
        b"$2a$04$tecY.9ylRInW/rAAzXCXPO",
        b"$2a$04$tecY.9ylRInW/rAAzXCXPOOlyYeCNzmNTzPDNSIFztFMKbvs/s5XG",
    ),
]

_2y_test_vectors = [
    (
        b"\xa3",
        b"$2y$05$/OK.fbVrR/bpIqNJ5ianF.Sa7shbm4.OzKpvFnX1pQLmQW96oUlCq",
        b"$2y$05$/OK.fbVrR/bpIqNJ5ianF.Sa7shbm4.OzKpvFnX1pQLmQW96oUlCq",
    ),
    (
        b"\xff\xff\xa3",
        b"$2y$05$/OK.fbVrR/bpIqNJ5ianF.CE5elHaaO4EbggVDjb8P19RukzXSM3e",
        b"$2y$05$/OK.fbVrR/bpIqNJ5ianF.CE5elHaaO4EbggVDjb8P19RukzXSM3e",
    ),
]


def test_gensalt_basic():
    salt = bcrypt.gensalt()
    assert salt.startswith(b"$2b$12$")


@pytest.mark.parametrize(
    ("rounds", "expected_prefix"),
    [
        (4, b"$2b$04$"),
        (5, b"$2b$05$"),
        (6, b"$2b$06$"),
        (7, b"$2b$07$"),
        (8, b"$2b$08$"),
        (9, b"$2b$09$"),
        (10, b"$2b$10$"),
        (11, b"$2b$11$"),
        (12, b"$2b$12$"),
        (13, b"$2b$13$"),
        (14, b"$2b$14$"),
        (15, b"$2b$15$"),
        (16, b"$2b$16$"),
        (17, b"$2b$17$"),
        (18, b"$2b$18$"),
        (19, b"$2b$19$"),
        (20, b"$2b$20$"),
        (21, b"$2b$21$"),
        (22, b"$2b$22$"),
        (23, b"$2b$23$"),
        (24, b"$2b$24$"),
    ],
)
def test_gensalt_rounds_valid(rounds, expected_prefix):
    salt = bcrypt.gensalt(rounds)

    assert salt.startswith(expected_prefix)


@pytest.mark.parametrize("rounds", list(range(1, 4)))
def test_gensalt_rounds_invalid(rounds):
    with pytest.raises(ValueError):
        bcrypt.gensalt(rounds)


def test_gensalt_bad_prefix():
    with pytest.raises(ValueError):
        bcrypt.gensalt(prefix=b"bad")


def test_gensalt_2a_prefix():
    salt = bcrypt.gensalt(prefix=b"2a")
    assert salt.startswith(b"$2a$12$")


@pytest.mark.parametrize(("password", "salt", "hashed"), _test_vectors)
def test_hashpw_new(password, salt, hashed):
    assert bcrypt.hashpw(password, salt) == hashed


@pytest.mark.parametrize(("password", "salt", "hashed"), _test_vectors)
def test_checkpw(password, salt, hashed):
    assert bcrypt.checkpw(password, hashed) is True


@pytest.mark.parametrize(("password", "salt", "hashed"), _test_vectors)
def test_hashpw_existing(password, salt, hashed):
    assert bcrypt.hashpw(password, hashed) == hashed


@pytest.mark.parametrize(("password", "hashed", "expected"), _2y_test_vectors)
def test_hashpw_2y_prefix(password, hashed, expected):
    assert bcrypt.hashpw(password, hashed) == expected


@pytest.mark.parametrize(("password", "hashed", "expected"), _2y_test_vectors)
def test_checkpw_2y_prefix(password, hashed, expected):
    assert bcrypt.checkpw(password, hashed) is True


def test_hashpw_invalid():
    with pytest.raises(ValueError):
        bcrypt.hashpw(b"password", b"$2z$04$cVWp4XaNU8a4v1uMRum2SO")


def test_checkpw_wrong_password():
    assert (
        bcrypt.checkpw(
            b"badpass",
            b"$2b$04$2Siw3Nv3Q/gTOIPetAyPr.GNj3aO0lb1E5E9UumYGKjP9BYqlNWJe",
        )
        is False
    )


def test_checkpw_bad_salt():
    with pytest.raises(ValueError):
        bcrypt.checkpw(
            b"badpass",
            b"$2b$04$?Siw3Nv3Q/gTOIPetAyPr.GNj3aO0lb1E5E9UumYGKjP9BYqlNWJe",
        )
    with pytest.raises(ValueError):
        bcrypt.checkpw(
            b"password",
            b"$2b$3$mdEQPMOtfPX.WGZNXgF66OhmBlOGKEd66SQ7DyJPGucYYmvTJYviy",
        )
    with pytest.raises(ValueError):
        bcrypt.checkpw(b"password", b"$2b$12$incorrect")


def test_checkpw_str_password():
    with pytest.raises(TypeError):
        bcrypt.checkpw("password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO")  # type: ignore[arg-type]


def test_checkpw_str_salt():
    with pytest.raises(TypeError):
        bcrypt.checkpw(b"password", "$2b$04$cVWp4XaNU8a4v1uMRum2SO")  # type: ignore[arg-type]


def test_hashpw_str_password():
    with pytest.raises(TypeError):
        bcrypt.hashpw("password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO")  # type: ignore[arg-type]


def test_hashpw_str_salt():
    with pytest.raises(TypeError):
        bcrypt.hashpw(b"password", "$2b$04$cVWp4XaNU8a4v1uMRum2SO")  # type: ignore[arg-type]


def test_checkpw_nul_byte():
    bcrypt.checkpw(
        b"abc\0def",
        b"$2b$04$2Siw3Nv3Q/gTOIPetAyPr.GNj3aO0lb1E5E9UumYGKjP9BYqlNWJe",
    )

    with pytest.raises(ValueError):
        bcrypt.checkpw(
            b"abcdef",
            b"$2b$04$2S\0w3Nv3Q/gTOIPetAyPr.GNj3aO0lb1E5E9UumYGKjP9BYqlNWJe",
        )


def test_hashpw_nul_byte():
    salt = bcrypt.gensalt(4)
    hashed = bcrypt.hashpw(b"abc\0def", salt)
    assert bcrypt.checkpw(b"abc\0def", hashed)
    # assert that we are sensitive to changes in the password after the first
    # null byte:
    assert not bcrypt.checkpw(b"abc\0deg", hashed)
    assert not bcrypt.checkpw(b"abc\0def\0", hashed)
    assert not bcrypt.checkpw(b"abc\0def\0\0", hashed)


def test_checkpw_extra_data():
    salt = bcrypt.gensalt(4)
    hashed = bcrypt.hashpw(b"abc", salt)

    assert bcrypt.checkpw(b"abc", hashed)
    assert bcrypt.checkpw(b"abc", hashed + b"extra") is False
    assert bcrypt.checkpw(b"abc", hashed[:-10]) is False


@pytest.mark.parametrize(
    ("rounds", "password", "salt", "expected"),
    [
        [
            4,
            b"password",
            b"salt",
            b"\x5b\xbf\x0c\xc2\x93\x58\x7f\x1c\x36\x35\x55\x5c\x27\x79\x65\x98"
            b"\xd4\x7e\x57\x90\x71\xbf\x42\x7e\x9d\x8f\xbe\x84\x2a\xba\x34\xd9",
        ],
        [
            4,
            b"password",
            b"\x00",
            b"\xc1\x2b\x56\x62\x35\xee\xe0\x4c\x21\x25\x98\x97\x0a\x57\x9a\x67",
        ],
        [
            4,
            b"\x00",
            b"salt",
            b"\x60\x51\xbe\x18\xc2\xf4\xf8\x2c\xbf\x0e\xfe\xe5\x47\x1b\x4b\xb9",
        ],
        [
            # nul bytes in password and string
            4,
            b"password\x00",
            b"salt\x00",
            b"\x74\x10\xe4\x4c\xf4\xfa\x07\xbf\xaa\xc8\xa9\x28\xb1\x72\x7f\xac"
            b"\x00\x13\x75\xe7\xbf\x73\x84\x37\x0f\x48\xef\xd1\x21\x74\x30\x50",
        ],
        [
            4,
            b"pass\x00wor",
            b"sa\0l",
            b"\xc2\xbf\xfd\x9d\xb3\x8f\x65\x69\xef\xef\x43\x72\xf4\xde\x83\xc0",
        ],
        [
            4,
            b"pass\x00word",
            b"sa\0lt",
            b"\x4b\xa4\xac\x39\x25\xc0\xe8\xd7\xf0\xcd\xb6\xbb\x16\x84\xa5\x6f",
        ],
        [
            # bigger key
            8,
            b"password",
            b"salt",
            b"\xe1\x36\x7e\xc5\x15\x1a\x33\xfa\xac\x4c\xc1\xc1\x44\xcd\x23\xfa"
            b"\x15\xd5\x54\x84\x93\xec\xc9\x9b\x9b\x5d\x9c\x0d\x3b\x27\xbe\xc7"
            b"\x62\x27\xea\x66\x08\x8b\x84\x9b\x20\xab\x7a\xa4\x78\x01\x02\x46"
            b"\xe7\x4b\xba\x51\x72\x3f\xef\xa9\xf9\x47\x4d\x65\x08\x84\x5e\x8d",
        ],
        [
            # more rounds
            42,
            b"password",
            b"salt",
            b"\x83\x3c\xf0\xdc\xf5\x6d\xb6\x56\x08\xe8\xf0\xdc\x0c\xe8\x82\xbd",
        ],
        [
            # longer password
            8,
            b"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do"
            b" eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut "
            b"enim ad minim veniam, quis nostrud exercitation ullamco laboris "
            b"nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor "
            b"in reprehenderit in voluptate velit esse cillum dolore eu fugiat"
            b" nulla pariatur. Excepteur sint occaecat cupidatat non proident,"
            b" sunt in culpa qui officia deserunt mollit anim id est laborum.",
            b"salis\x00",
            b"\x10\x97\x8b\x07\x25\x3d\xf5\x7f\x71\xa1\x62\xeb\x0e\x8a\xd3\x0a",
        ],
        [
            # "unicode"
            8,
            b"\x0d\xb3\xac\x94\xb3\xee\x53\x28\x4f\x4a\x22\x89\x3b\x3c\x24\xae",
            b"\x3a\x62\xf0\xf0\xdb\xce\xf8\x23\xcf\xcc\x85\x48\x56\xea\x10\x28",
            b"\x20\x44\x38\x17\x5e\xee\x7c\xe1\x36\xc9\x1b\x49\xa6\x79\x23\xff",
        ],
        [
            # very large key
            8,
            b"\x0d\xb3\xac\x94\xb3\xee\x53\x28\x4f\x4a\x22\x89\x3b\x3c\x24\xae",
            b"\x3a\x62\xf0\xf0\xdb\xce\xf8\x23\xcf\xcc\x85\x48\x56\xea\x10\x28",
            b"\x20\x54\xb9\xff\xf3\x4e\x37\x21\x44\x03\x34\x74\x68\x28\xe9\xed"
            b"\x38\xde\x4b\x72\xe0\xa6\x9a\xdc\x17\x0a\x13\xb5\xe8\xd6\x46\x38"
            b"\x5e\xa4\x03\x4a\xe6\xd2\x66\x00\xee\x23\x32\xc5\xed\x40\xad\x55"
            b"\x7c\x86\xe3\x40\x3f\xbb\x30\xe4\xe1\xdc\x1a\xe0\x6b\x99\xa0\x71"
            b"\x36\x8f\x51\x8d\x2c\x42\x66\x51\xc9\xe7\xe4\x37\xfd\x6c\x91\x5b"
            b"\x1b\xbf\xc3\xa4\xce\xa7\x14\x91\x49\x0e\xa7\xaf\xb7\xdd\x02\x90"
            b"\xa6\x78\xa4\xf4\x41\x12\x8d\xb1\x79\x2e\xab\x27\x76\xb2\x1e\xb4"
            b"\x23\x8e\x07\x15\xad\xd4\x12\x7d\xff\x44\xe4\xb3\xe4\xcc\x4c\x4f"
            b"\x99\x70\x08\x3f\x3f\x74\xbd\x69\x88\x73\xfd\xf6\x48\x84\x4f\x75"
            b"\xc9\xbf\x7f\x9e\x0c\x4d\x9e\x5d\x89\xa7\x78\x39\x97\x49\x29\x66"
            b"\x61\x67\x07\x61\x1c\xb9\x01\xde\x31\xa1\x97\x26\xb6\xe0\x8c\x3a"
            b"\x80\x01\x66\x1f\x2d\x5c\x9d\xcc\x33\xb4\xaa\x07\x2f\x90\xdd\x0b"
            b"\x3f\x54\x8d\x5e\xeb\xa4\x21\x13\x97\xe2\xfb\x06\x2e\x52\x6e\x1d"
            b"\x68\xf4\x6a\x4c\xe2\x56\x18\x5b\x4b\xad\xc2\x68\x5f\xbe\x78\xe1"
            b"\xc7\x65\x7b\x59\xf8\x3a\xb9\xab\x80\xcf\x93\x18\xd6\xad\xd1\xf5"
            b"\x93\x3f\x12\xd6\xf3\x61\x82\xc8\xe8\x11\x5f\x68\x03\x0a\x12\x44",
        ],
        [
            # UTF-8 Greek characters "odysseus" / "telemachos"
            8,
            b"\xe1\xbd\x88\xce\xb4\xcf\x85\xcf\x83\xcf\x83\xce\xb5\xcf\x8d\xcf\x82",
            b"\xce\xa4\xce\xb7\xce\xbb\xce\xad\xce\xbc\xce\xb1\xcf\x87\xce\xbf"
            b"\xcf\x82",
            b"\x43\x66\x6c\x9b\x09\xef\x33\xed\x8c\x27\xe8\xe8\xf3\xe2\xd8\xe6",
        ],
    ],
)
def test_kdf(rounds, password, salt, expected):
    derived = bcrypt.kdf(
        password, salt, len(expected), rounds, ignore_few_rounds=True
    )
    assert derived == expected


def test_kdf_str_password():
    with pytest.raises(TypeError):
        bcrypt.kdf("password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", 10, 10)  # type: ignore[arg-type]


def test_kdf_str_salt():
    with pytest.raises(TypeError):
        bcrypt.kdf(b"password", "salt", 10, 10)  # type: ignore[arg-type]


def test_kdf_no_warn_rounds():
    bcrypt.kdf(b"password", b"salt", 10, 10, True)


def test_kdf_warn_rounds():
    with pytest.warns(UserWarning):
        bcrypt.kdf(b"password", b"salt", 10, 10)


@pytest.mark.parametrize(
    ("password", "salt", "desired_key_bytes", "rounds", "error"),
    [
        ("pass", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", 10, 10, TypeError),
        (b"password", "salt", 10, 10, TypeError),
        (b"", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", 10, 10, ValueError),
        (b"password", b"", 10, 10, ValueError),
        (b"password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", 0, 10, ValueError),
        (b"password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", -3, 10, OverflowError),
        (b"password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", 513, 10, ValueError),
        (b"password", b"$2b$04$cVWp4XaNU8a4v1uMRum2SO", 20, 0, ValueError),
    ],
)
def test_invalid_params(password, salt, desired_key_bytes, rounds, error):
    with pytest.raises(error):
        bcrypt.kdf(password, salt, desired_key_bytes, rounds)


def test_2a_wraparound_bug():
    assert (
        bcrypt.hashpw(
            (b"0123456789" * 26)[:255], b"$2a$04$R1lJ2gkNaoPGdafE.H.16."
        )
        == b"$2a$04$R1lJ2gkNaoPGdafE.H.16.1MKHPvmKwryeulRe225LKProWYwt9Oi"
    )


def test_multithreading():
    def create_user(pw):
        salt = bcrypt.gensalt(4)
        hash_ = bcrypt.hashpw(pw, salt)
        key = bcrypt.kdf(pw, salt, 32, 50)
        assert bcrypt.checkpw(pw, hash_)
        return (salt, hash_, key)

    user_creator = ThreadPoolExecutor(max_workers=4)
    pws = [uuid.uuid4().bytes for _ in range(50)]

    futures = [user_creator.submit(create_user, pw) for pw in pws]

    users = [future.result() for future in futures]

    for pw, (salt, hash_, key) in zip(pws, users):
        assert bcrypt.hashpw(pw, salt) == hash_
        assert bcrypt.checkpw(pw, hash_)
        assert bcrypt.kdf(pw, salt, 32, 50) == key