"""
Test argument parsing and r2d construction
"""
import os
import pytest
import logging
from repo2docker.__main__ import make_r2d
from repo2docker import __version__


def test_version(capsys):
    """
    Test passing '--version' to repo2docker
    """
    with pytest.raises(SystemExit):
        make_r2d(['--version'])
    assert capsys.readouterr().out == "{}\n".format(__version__)

def test_simple():
    """
    Test simplest possible invocation to r2d
    """
    r2d = make_r2d(['.'])
    assert r2d.repo == '.'

def test_editable():
    """
    Test --editable behavior
    """
    r2d = make_r2d(['--editable', '.'])
    assert r2d.repo == '.'
    assert r2d.volumes[os.getcwd()] == '.'

def test_dry_run():
    """
    Test passing --no-build implies --no-run and lack of --push
    """
    r2d = make_r2d(['--no-build', '.'])
    assert r2d.dry_run
    assert not r2d.run
    assert not r2d.push


def test_mem_limit():
    """
    Test various ways of passing --build-memory-limit
    """
    r2d = make_r2d(['--build-memory-limit', '1024', '.'])
    assert int(r2d.build_memory_limit) == 1024

    r2d = make_r2d(['--build-memory-limit', '3K', '.'])
    assert int(r2d.build_memory_limit) == 1024 * 3

def test_run_required():
    """
    Test all the things that should fail if we pass in --no-run
    """
    # Can't use volumes without running
    with pytest.raises(SystemExit):
        make_r2d(['--no-run', '--editable', '.'])

    # Can't publish all ports without running
    with pytest.raises(SystemExit):
        make_r2d(['--no-run', '-P', '.'])

    # Can't publish any ports without running
    with pytest.raises(SystemExit):
        make_r2d(['--no-run', '-p', '8000:8000', '.'])

    # Can't publish any ports while running if we don't specify a command explicitly
    with pytest.raises(SystemExit):
        make_r2d(['-p', '8000:8000', '.'])

def test_clean():
    """
    Test checkout is cleaned appropriately
    """

    # Don't clean when repo isn't local and we explicitly ask it to not clean
    assert not make_r2d(['--no-clean', 'https://github.com/blah.git']).cleanup_checkout
    # Do clean repo when repo isn't localj
    assert make_r2d(['https://github.com/blah.git']).cleanup_checkout

    # Don't clean by default when repo exists locally
    assert not make_r2d(['.']).cleanup_checkout
    # Don't clean when repo exists locally and we explicitly ask it to not clean
    assert not make_r2d(['--no-clean', '.']).cleanup_checkout


def test_invalid_image_name():
    """
    Test validating image names
    """
    with pytest.raises(SystemExit):
        make_r2d(['--image-name', '_invalid', '.'])