import clang.cindex
from clang.cindex import ExceptionSpecificationKind
from .util import get_tu


def find_function_declarations(node, declarations=[]):
    if node.kind == clang.cindex.CursorKind.FUNCTION_DECL:
        declarations.append((node.spelling, node.exception_specification_kind))
    for child in node.get_children():
        declarations = find_function_declarations(child, declarations)
    return declarations


def test_exception_specification_kind():
    source = """int square1(int x);
                int square2(int x) noexcept;
                int square3(int x) noexcept(noexcept(x * x));"""

    tu = get_tu(source, lang='cpp', flags=['-std=c++14'])

    declarations = find_function_declarations(tu.cursor)
    expected = [
        ('square1', ExceptionSpecificationKind.NONE),
        ('square2', ExceptionSpecificationKind.BASIC_NOEXCEPT),
        ('square3', ExceptionSpecificationKind.COMPUTED_NOEXCEPT)
    ]
    assert declarations == expected