"""Xonsh AST tests."""
from xonsh import ast
from xonsh.ast import Tuple, Name, Store, min_line

from tools import execer_setup, check_parse


def setup():
    execer_setup()


def test_gather_names_name():
    node = Name(id='y', ctx=Store())
    exp = {'y'}
    obs = ast.gather_names(node)
    assert exp == obs


def test_gather_names_tuple():
    node = Tuple(elts=[Name(id='y', ctx=Store()),
                       Name(id='z', ctx=Store())])
    exp = {'y', 'z'}
    obs = ast.gather_names(node)
    assert exp == obs

def test_multilline_num():
    code = ('x = 1\n'
            'ls -l\n')  # this second line wil be transformed
    tree = check_parse(code)
    lsnode = tree.body[1]
    assert 2 == min_line(lsnode)