gns3-server/tests/compute/qemu/test_qemu_manager.py

220 lines
8.5 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (C) 2015 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import stat
import sys
import pytest
import platform
from gns3server.compute.qemu import Qemu
from gns3server.compute.qemu.qemu_error import QemuError
from tests.utils import asyncio_patch
from unittest.mock import patch, MagicMock
@pytest.fixture
def fake_qemu_img_binary(tmpdir):
if sys.platform.startswith("win"):
bin_path = str(tmpdir / "qemu-img.EXE")
else:
bin_path = str(tmpdir / "qemu-img")
with open(bin_path, "w+") as f:
f.write("1")
os.chmod(bin_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
return bin_path
async def test_get_qemu_version():
with asyncio_patch("gns3server.compute.qemu.subprocess_check_output", return_value="QEMU emulator version 2.2.0, Copyright (c) 2003-2008 Fabrice Bellard"):
version = await Qemu.get_qemu_version("/tmp/qemu-test")
if sys.platform.startswith("win"):
assert version == ""
else:
assert version == "2.2.0"
async def test_binary_list(monkeypatch, tmpdir):
monkeypatch.setenv("PATH", str(tmpdir))
files_to_create = ["qemu-system-x86", "qemu-system-x42", "qemu-kvm", "hello", "qemu-system-x86_64-spice"]
for file_to_create in files_to_create:
path = os.path.join(os.environ["PATH"], file_to_create)
with open(path, "w+") as f:
f.write("1")
os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
with asyncio_patch("gns3server.compute.qemu.subprocess_check_output", return_value="QEMU emulator version 2.2.0, Copyright (c) 2003-2008 Fabrice Bellard") as mock:
if sys.platform.startswith("win"):
version = ""
else:
version = "2.2.0"
qemus = await Qemu.binary_list()
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x42"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "hello"), "version": version} not in qemus
qemus = await Qemu.binary_list(["x86"])
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x42"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "hello"), "version": version} not in qemus
qemus = await Qemu.binary_list(["x86", "x42"])
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x42"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "hello"), "version": version} not in qemus
async def test_img_binary_list(monkeypatch, tmpdir):
monkeypatch.setenv("PATH", str(tmpdir))
files_to_create = ["qemu-img", "qemu-io", "qemu-system-x86", "qemu-system-x42", "qemu-kvm", "hello"]
for file_to_create in files_to_create:
path = os.path.join(os.environ["PATH"], file_to_create)
with open(path, "w+") as f:
f.write("1")
os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
with asyncio_patch("gns3server.compute.qemu.subprocess_check_output", return_value="qemu-img version 2.2.0, Copyright (c) 2004-2008 Fabrice Bellard") as mock:
qemus = await Qemu.img_binary_list()
version = "2.2.0"
assert {"path": os.path.join(os.environ["PATH"], "qemu-img"), "version": version} in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-io"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x42"), "version": version} not in qemus
assert {"path": os.path.join(os.environ["PATH"], "hello"), "version": version} not in qemus
def test_get_legacy_vm_workdir():
assert Qemu.get_legacy_vm_workdir(42, "bla") == os.path.join("qemu", "vm-42")
async def test_create_image_abs_path(tmpdir, fake_qemu_img_binary):
options = {
"format": "qcow2",
"preallocation": "metadata",
"cluster_size": 64,
"refcount_bits": 12,
"lazy_refcounts": "off",
"size": 100
}
with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
await Qemu.instance().create_disk(fake_qemu_img_binary, str(tmpdir / "hda.qcow2"), options)
args, kwargs = process.call_args
assert args == (
fake_qemu_img_binary,
"create",
"-f",
"qcow2",
"-o",
"cluster_size=64",
"-o",
"lazy_refcounts=off",
"-o",
"preallocation=metadata",
"-o",
"refcount_bits=12",
str(tmpdir / "hda.qcow2"),
"100M"
)
async def test_create_image_relative_path(tmpdir, fake_qemu_img_binary):
options = {
"format": "raw",
"size": 100
}
with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
with patch("gns3server.compute.qemu.Qemu.get_images_directory", return_value=str(tmpdir)):
await Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)
args, kwargs = process.call_args
assert args == (
fake_qemu_img_binary,
"create",
"-f",
"raw",
str(tmpdir / "hda.qcow2"),
"100M"
)
async def test_create_image_exist(tmpdir, fake_qemu_img_binary):
open(str(tmpdir / "hda.qcow2"), "w+").close()
options = {
"format": "raw",
"size": 100
}
with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
with patch("gns3server.compute.qemu.Qemu.get_images_directory", return_value=str(tmpdir)):
with pytest.raises(QemuError):
await Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)
assert not process.called
async def test_create_image_with_not_supported_characters_by_filesystem(tmpdir, fake_qemu_img_binary):
open(str(tmpdir / "hda.qcow2"), "w+").close()
options = {
"format": "raw",
"size": 100
}
# patching os.makedirs is necessary as it depends on already mocked os.path.exists
with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process, \
patch("gns3server.compute.qemu.Qemu._init_config_disk", return_value=MagicMock()), \
patch("gns3server.compute.qemu.Qemu.get_images_directory", return_value=str(tmpdir)), \
patch("os.path.exists", side_effect=UnicodeEncodeError('error', u"", 1, 2, 'Emulated Unicode Err')),\
patch("os.makedirs"):
with pytest.raises(QemuError):
await Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)
assert not process.called
async def test_get_kvm_archs_kvm_ok():
with patch("os.path.exists", return_value=True):
archs = await Qemu.get_kvm_archs()
if platform.machine() == 'x86_64':
assert archs == ['x86_64', 'i386']
else:
assert archs == [platform.machine()]
with patch("os.path.exists", return_value=False):
archs = await Qemu.get_kvm_archs()
assert archs == []