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# Copyright (c) 2012, Calxeda Inc.
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of Calxeda Inc. nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
"""Unit tests for the Internal and External Tftp classes."""
import os
import socket
import unittest
from cxmanage_test import random_file
from cxmanage_api.tftp import InternalTftp, ExternalTftp
def _get_relative_host():
"""Returns the test machine ip as a relative host to pass to the
InternalTftp server.
"""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
# RFC863 defines port 9 as the UDP discard port, so we use it to
# find out our local ip to pass as a relative_host
return sock.getsockname()[0]
except socket.error:
raise
class InternalTftpTest(unittest.TestCase):
""" Tests the functions of the InternalTftp class."""
def setUp(self):
"""Create local Internal TFTP objects to test with."""
self.tftp1 = InternalTftp()
self.tftp2 = InternalTftp(ip_address='127.0.0.254')
def test_put_and_get(self):
""" Test file transfers on an internal host """
# Create file
filename = random_file(1024)
contents = open(filename).read()
# Upload and remove
basename = os.path.basename(filename)
self.tftp1.put_file(filename, basename)
os.remove(filename)
self.assertFalse(os.path.exists(filename))
# Download
self.tftp1.get_file(basename, filename)
# Verify match
self.assertEqual(open(filename).read(), contents)
os.remove(filename)
def test_get_address_with_relative_host(self):
"""Tests the get_address(relative_host) function with a relative_host
specified.
"""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
# RFC863 defines port 9 as the UDP discard port, so we use it to
# find out our local ip to pass as a relative_host
sock.connect((socket.gethostname(), 9))
relative_host = sock.getsockname()[0]
except socket.error:
raise
self.assertEqual(self.tftp2.ip_address,
self.tftp2.get_address(relative_host=relative_host))
sock.close()
class ExternalTftpTest(unittest.TestCase):
"""Tests the ExternalTftp class.
..note:
* For testing purposes the 'external' server points to an internally
hosted one, but it allows us to make sure the actual TFTP protocol is
working.
"""
def setUp(self):
"""Create an ExternalTftp object to test with."""
self.itftp = InternalTftp(ip_address='127.0.0.250')
self.etftp = ExternalTftp(
self.itftp.get_address(relative_host=_get_relative_host()),
self.itftp.port)
def test_put_and_get(self):
"""Test the put_file(src, dest) function. Test the get_file(src,dest)
function by movign local files around using the TFT Protocol.
"""
# Create file
filename = random_file(1024)
contents = open(filename).read()
# Upload and remove original file
basename = os.path.basename(filename)
self.etftp.put_file(src=filename, dest=basename)
os.remove(filename)
self.assertFalse(os.path.exists(filename))
# Download
self.etftp.get_file(src=basename, dest=filename)
# Verify match
self.assertEqual(open(filename).read(), contents)
os.remove(filename)
# End of file: ./tftp_test.py
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