import getpass

from unittest import TestCase

from dvc.remote.ssh import RemoteSSH


class TestRemoteSSH(TestCase):
    def test_user(self):
        url = 'ssh://127.0.0.1:/path/to/dir'
        config = {'url': url}
        remote = RemoteSSH(None, config)
        self.assertEqual(remote.user, getpass.getuser())

        user = 'test1'
        url = 'ssh://{}@127.0.0.1:/path/to/dir'.format(user)
        config = {'url': url}
        remote = RemoteSSH(None, config)
        self.assertEqual(remote.user, user)

        user = 'test2'
        config['user'] = user
        remote = RemoteSSH(None, config)
        self.assertEqual(remote.user, user)

    def test_url(self):
        user = 'test'
        host = '123.45.67.89'
        port = 1234
        path = '/path/to/dir'

        # URL ssh://[user@]host.xz[:port]/path
        url = 'ssh://{}@{}:{}{}'.format(user, host, port, path)
        config = {'url': url}

        remote = RemoteSSH(None, config)

        self.assertEqual(remote.user, user)
        self.assertEqual(remote.host, host)
        self.assertEqual(remote.port, port)
        self.assertEqual(remote.prefix, path)

        # SCP-like URL ssh://[user@]host.xz:path
        url = 'ssh://{}@{}:{}'.format(user, host, path)
        config = {'url': url}

        remote = RemoteSSH(None, config)

        self.assertEqual(remote.user, user)
        self.assertEqual(remote.host, host)
        self.assertEqual(remote.port, remote.DEFAULT_PORT)
        self.assertEqual(remote.prefix, path)

    def test_port(self):
        url = 'ssh://127.0.0.1/path/to/dir'
        config = {'url': url}
        remote = RemoteSSH(None, config)
        self.assertEqual(remote.port, remote.DEFAULT_PORT)

        port = 1234
        url = 'ssh://127.0.0.1:{}/path/to/dir'.format(port)
        config = {'url': url}
        remote = RemoteSSH(None, config)
        self.assertEqual(remote.port, port)

        port = 4321
        config['port'] = port
        remote = RemoteSSH(None, config)
        self.assertEqual(remote.port, port)