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pwndbg/tests/unit-tests/test_memory.py

34 lines
1.1 KiB
Python

from __future__ import annotations
import sys
from unittest.mock import MagicMock
# Replace `pwndbg.commands` module with a mock to prevent import errors, as well
# as the `load_commands` function
module_name = "pwndbg.commands"
module = MagicMock(__name__=module_name, load_commands=lambda: None)
sys.modules[module_name] = module
# Load the mocks for the `gdb` and `gdblib` modules
import mocks.gdb
import mocks.gdblib # noqa: F401
# We must import the function under test after all the mocks are imported
from pwndbg.lib.memory import round_down
from pwndbg.lib.memory import round_up
def test_basic_rounding():
assert round_down(0xDEADBEEF, 0x1000) == 0xDEADB000
assert round_up(0xDEADBEEF, 0x1000) == 0xDEADC000
def test_many_rounding():
for n in range(0x100):
for i in range(8):
alignment = 1 << i
down = round_down(n, alignment)
up = round_up(n, alignment)
assert down <= n and down + alignment > n and down % alignment == 0
assert up >= n and up - alignment < n and up % alignment == 0