from libpathod import utils
import tutils


def test_membool():
    m = utils.MemBool()
    assert not m.v
    assert m(1)
    assert m.v == 1
    assert m(2)
    assert m.v == 2


def test_parse_size():
    assert utils.parse_size("100") == 100
    assert utils.parse_size("100k") == 100 * 1024
    tutils.raises("invalid size spec", utils.parse_size, "foo")
    tutils.raises("invalid size spec", utils.parse_size, "100kk")


def test_parse_anchor_spec():
    assert utils.parse_anchor_spec("foo=200") == ("foo", "200")
    assert utils.parse_anchor_spec("foo") is None


def test_data_path():
    tutils.raises(ValueError, utils.data.path, "nonexistent")


def test_inner_repr():
    assert utils.inner_repr("\x66") == "\x66"
    assert utils.inner_repr(u"foo") == "foo"


def test_escape_unprintables():
    s = "".join([chr(i) for i in range(255)])
    e = utils.escape_unprintables(s)
    assert e.encode('ascii')
    assert not "PATHOD_MARKER" in e
