import pytest
import os
import sys
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
from functions.math_utils import *
import functions.math_utils as math_utils
import math
import importlib
from unittest import mock

class CustomError(Exception):
    pass

def test_broken():
    # simulating a broken or faulty test implementation that will cause the test to error
    want_the_test_to_fail

def test_call_missing_function():
    # Accessing a missing function attribute raises AttributeError
    with pytest.raises(AttributeError):
        getattr(math_utils, "non_existent_function")()

def test_addition_pass():
    # Test passes: correct addition
    assert addition(2, 2) == 4

def test_addition_fail():
    # Assertion failure: expected incorrect result
    assert addition(2, 2) == 5

def test_division_zero():
    # Expect ZeroDivisionError when dividing by zero
    with pytest.raises(ZeroDivisionError):
        division(1, 0)

@pytest.mark.xfail(reason="Expected failure")
def test_multiply_xfail():
    # Expected fail test (xfail): incorrect expected multiply result
    assert multiply(2, 2) == 5

def test_runtime_error():
    # Test raises an uncaught RuntimeError
    raise RuntimeError("Forced runtime error")

def test_memory_error():
    # Manually raise MemoryError to simulate out-of-memory condition
    with pytest.raises(MemoryError):
        raise MemoryError("Simulated memory error")

def test_timeout_error():
    # Manually raise TimeoutError simulating timeout conditions
    with pytest.raises(TimeoutError):
        raise TimeoutError("Simulated timeout error")

def test_recursion_error():
    # Infinite recursion triggers RecursionError
    def recursive():
        return recursive()
    with pytest.raises(RecursionError):
        recursive()

def test_floating_point_error():
    # Manually raise FloatingPointError (rare in practice)
    with pytest.raises(FloatingPointError):
        raise FloatingPointError("Simulated floating point error")

def test_floating_point_overflow():
    # Exponential overflow triggers OverflowError
    with pytest.raises(OverflowError):
        math.exp(1000)

def test_value_error():
    # ValueError on invalid integer conversion
    with pytest.raises(ValueError):
        int("invalid")

def test_type_error():
    # TypeError when passing wrong argument type to sum
    with pytest.raises(TypeError):
        sum(5)

def test_unhandled_exception():
    # Raises generic unhandled Exception
    raise Exception("Generic unhandled exception")

def test_custom_error():
    # Raises user-defined CustomError exception
    with pytest.raises(CustomError):
        raise CustomError("Custom error simulation")

def test_stop_iteration_direct():
    # Directly raise StopIteration exception
    raise StopIteration()

def test_generator_exit_direct():
    # Directly raise GeneratorExit exception
    raise GeneratorExit()

def test_keyboard_interrupt_direct():
    # Directly raise KeyboardInterrupt exception
    raise KeyboardInterrupt()

def test_recursion_limit(monkeypatch):
    # Lower recursion limit to force RecursionError on deep recursion
    original_limit = sys.getrecursionlimit()
    sys.setrecursionlimit(50)
    def recurse():
        return recurse()
    with pytest.raises(RecursionError):
        recurse()
    sys.setrecursionlimit(original_limit)

def test_malformed_code():
    # SyntaxError when executing malformed Python code
    with pytest.raises(SyntaxError):
        exec("def bad(:\n pass")

def test_sys_exit(monkeypatch):
    # Simulate SystemExit via patched sys.exit
    def fake_exit(code=0):
        raise SystemExit(f"Exit with code {code}")
    monkeypatch.setattr(sys, "exit", fake_exit)
    with pytest.raises(SystemExit):
        sys.exit(1)

def test_broken_function(monkeypatch):
    # Simulate broken function raising TypeError
    def broken_func(*args, **kwargs):
        raise TypeError("Broken function")
    monkeypatch.setattr(__name__, "test_broken_function", broken_func)
    with pytest.raises(TypeError):
        broken_func()

def test_import_error_patch(monkeypatch):
    # Patch import to simulate ImportError on specific module
    original_import = __import__
    def fake_import(name, *args, **kwargs):
        if name == "fake_module":
            raise ImportError("Simulated ImportError")
        return original_import(name, *args, **kwargs)
    monkeypatch.setattr("builtins.__import__", fake_import)
    with pytest.raises(ImportError):
        __import__("fake_module")

def test_module_not_found_error():
    # Raises ModuleNotFoundError (subclass of ImportError) for missing module
    with pytest.raises(ModuleNotFoundError):
        importlib.import_module("non_existent_module_xyz")