import pytest

from ..helpers import Suite

TYPE_LIST = ['f32', 'f64']

@pytest.mark.integration_test
@pytest.mark.parametrize('type_', TYPE_LIST)
def test_division_float(type_):
    code_py = f"""
@exported
def testEntry() -> {type_}:
    return 10.0 / 8.0
"""

    result = Suite(code_py).run_code()

    assert 1.25 == result.returned_value
    assert isinstance(result.returned_value, float)

@pytest.mark.integration_test
@pytest.mark.parametrize('type_', TYPE_LIST)
def test_division_zero_let_it_crash_float(type_):
    code_py = f"""
@exported
def testEntry() -> {type_}:
    return 10.0 / 0.0
"""

    # WebAssembly dictates that float division follows the IEEE rules
    # https://www.w3.org/TR/wasm-core-1/#-hrefop-fdivmathrmfdiv_n-z_1-z_2
    result = Suite(code_py).run_code()
    assert float('+inf') == result.returned_value