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'''Test Fortran 2008 rule R513

    upper-cobound is specification-expr

'''

import pytest
from fparser.two.Fortran2008 import Upper_Cobound
from fparser.two import Fortran2003


@pytest.mark.usefixtures("f2008_create")
@pytest.mark.parametrize('attr, _type', [
    ('aaa', Fortran2003.Name),
    ('aAa', Fortran2003.Name),
    ('1', Fortran2003.Int_Literal_Constant),
    ('5  + 7', Fortran2003.Level_2_Expr),
    ('3-9', Fortran2003.Level_2_Expr)
])
def test_upper_cobound(attr, _type):
    '''Test that upper_cobound is parsed correctly.'''
    obj = Upper_Cobound(attr)
    assert isinstance(obj, _type), repr(obj)
    ref = attr.replace(' ', '').replace('+', ' + ').replace('-', ' - ')
    assert str(obj) == ref


@pytest.mark.usefixtures("f2008_create")
@pytest.mark.parametrize('attr', ['', '*'])
def test_invalid_upper_cobound(attr):
    '''Test that invalid upper_cobound raise exception.'''
    with pytest.raises(Fortran2003.NoMatchError):
        _ = Upper_Cobound(attr)
