import pytest

from phasm.type3.entry import Type3Exception

from ..helpers import Suite


@pytest.mark.integration_test
def test_foldable_sum():
    code_py = """
@exported
def testEntry(x: i32[5]) -> i32:
    return sum(x)
"""

    result = Suite(code_py).run_code((4, 5, 6, 7, 8, ))

    assert 30 == result.returned_value

@pytest.mark.integration_test
def test_foldable_sum_not_natnum():
    code_py = """
class Foo:
    bar: i32

@exported
def testEntry(x: Foo[4]) -> Foo:
    return sum(x)
"""

    with pytest.raises(Type3Exception, match='Missing type class instantation: NatNum Foo'):
        Suite(code_py).run_code()


@pytest.mark.integration_test
def test_foldable_invalid_return_type():
    code_py = """
@exported
def testEntry(x: i32[5]) -> f64:
    return sum(x)
"""

    with pytest.raises(Type3Exception, match='f64 must be i32 instead'):
        Suite(code_py).run_code((4, 5, 6, 7, 8, ))

@pytest.mark.integration_test
def test_foldable_not_foldable():
    code_py = """
@exported
def testEntry(x: i32) -> i32:
    return sum(x)
"""

    with pytest.raises(Type3Exception, match='Missing type class instantation: Foldable i32'):
        Suite(code_py).run_code()