# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, unicode_literals

import os
import sys

import mozunit
import pytest

from mozterm import Terminal, NullTerminal


def test_terminal():
    blessings = pytest.importorskip("blessings")
    term = Terminal()
    assert isinstance(term, blessings.Terminal)

    term = Terminal(disable_styling=True)
    assert isinstance(term, NullTerminal)

    del sys.modules["blessings"]
    orig = sys.path[:]
    for path in orig:
        if "blessings" in path:
            sys.path.remove(path)

    term = Terminal()
    assert isinstance(term, NullTerminal)

    with pytest.raises(ImportError):
        term = Terminal(raises=True)

    sys.path = orig


def test_null_terminal():
    term = NullTerminal()
    assert term.red("foo") == "foo"
    assert term.red == ""
    assert term.color(1) == ""
    assert term.number_of_colors == 0
    assert term.width == 0
    assert term.height == 0
    assert term.is_a_tty == os.isatty(sys.stdout.fileno())


if __name__ == "__main__":
    mozunit.main()