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Add some tests for creator.py 

This is complicated by the fact that much of this module requires mount.
So for now just test the things that don't need mount.

(cherry picked from commit 134a333d92)
This commit is contained in:
Brian C. Lane 2018-11-02 11:47:31 -07:00
parent c63b2e3881
commit ef45d169b0
2 changed files with 123 additions and 0 deletions
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2
Dockerfile.test
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@ -22,6 +22,8 @@ RUN dnf -y install \
sudo \
tito \
rsync \
e2fsprogs \
squashfs-tools \
which
RUN useradd weldr
VOLUME /lorax

121
tests/pylorax/test_creator.py Normal file
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@ -0,0 +1,121 @@
#
# Copyright (C) 2018 Red Hat, 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 2 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 tempfile
import unittest
import xml.etree.ElementTree as ET
from pylorax import find_templates
from pylorax.base import DataHolder
from pylorax.creator import FakeDNF, create_pxe_config, make_appliance, make_squashfs, squashfs_args
from pylorax.executils import runcmd
from pylorax.imgutils import mksparse
from pylorax.sysutils import joinpaths
class CreatorTest(unittest.TestCase):
def fakednf_test(self):
"""Test FakeDNF class"""
fake_dbo = FakeDNF(conf=DataHolder(installroot="/a/fake/install/root/"))
self.assertEqual(fake_dbo.conf.installroot, "/a/fake/install/root/")
def squashfs_args_test(self):
"""Test squashfs_args results"""
test_arches = {"x86_64": ("xz", ["-Xbcj", "x86"]),
"ppc64": ("xz", ["-Xbcj", "powerpc"]),
"ppc64le": ("xz", ["-Xbcj", "powerpc"]),
"s390x": ("xz", []),
"ia64": ("xz", []),
"aarch64": ("xz", [])
}
for arch in test_arches:
opts = DataHolder(compression=None, arch=arch)
self.assertEqual(squashfs_args(opts), test_arches[arch], (opts, squashfs_args(opts)))
opts = DataHolder(compression="lzma", arch="x86_64")
self.assertEqual(squashfs_args(opts), ("lzma", []), (opts, squashfs_args(opts)))
def make_appliance_test(self):
"""Test creating the appliance description XML file"""
lorax_templates = find_templates("./share/")
appliance_template = joinpaths(lorax_templates, "appliance/libvirt.tmpl")
self.assertTrue(os.path.exists(appliance_template))
# A fake disk image
with tempfile.NamedTemporaryFile(prefix="lorax.test.disk.") as disk_img:
open(disk_img.name, "wb").write(b"THIS IS A FAKE DISK IMAGE FILE")
with tempfile.NamedTemporaryFile(prefix="lorax.test.appliance.") as output_xml:
make_appliance(disk_img.name, "test-appliance", appliance_template, output_xml.name,
["eth0", "eth1"], ram=4096, vcpus=8, arch="x86_64",
title="Lorax Test", project="Fedora", releasever="30")
print(open(output_xml.name).read())
# Parse the XML and check for known fields
tree = ET.parse(output_xml.name)
image = tree.getroot()
self.assertEqual(image.find("name").text, "test-appliance")
boot = image.find("./domain/boot")
self.assertEqual(boot.get("type"), "hvm")
self.assertEqual(boot.find("./guest/arch").text, "x86_64")
self.assertEqual(boot.find("./os/loader").get("dev"), "hd")
self.assertTrue(boot.find("drive").get("disk").startswith("lorax.test.disk."))
self.assertEqual(boot.find("drive").get("target"), "hda")
devices = image.find("./domain/devices")
self.assertEqual(devices.find("vcpu").text, "8")
self.assertEqual(devices.find("memory").text, "4096")
self.assertTrue(len(devices.findall("interface")), 2)
storage = image.find("storage")
self.assertTrue(storage.find("disk").get("file").startswith("lorax.test.disk."))
self.assertEqual(storage.find("./disk/checksum").get("type"), "sha256")
self.assertEqual(storage.find("./disk/checksum").text, "90611458b33009998f73e25ccc3766b31a8b548cc6c2d84f78ae0e84d64e10a5")
def pxe_config_test(self):
"""Test creation of a PXE config file"""
with tempfile.TemporaryDirectory(prefix="lorax.test.") as work_dir:
live_image_name = "live-rootfs.squashfs.img"
add_pxe_args = ["ostree=/mnt/sysimage/"]
lorax_templates = find_templates("./share/")
template = joinpaths(lorax_templates, "pxe-live/pxe-config.tmpl")
# Make a fake kernel and initrd
open(joinpaths(work_dir, "vmlinuz-4.18.13-200.fc28.x86_64"), "w").write("I AM A FAKE KERNEL")
open(joinpaths(work_dir, "initramfs-4.18.13-200.fc28.x86_64.img"), "w").write("I AM A FAKE INITRD")
# Create the PXE_CONFIG in work_dir
create_pxe_config(template, work_dir, live_image_name, add_pxe_args)
print(open(joinpaths(work_dir, "PXE_CONFIG")).read())
pxe_config = open(joinpaths(work_dir, "PXE_CONFIG")).read()
self.assertTrue("vmlinuz-4.18.13-200.fc28.x86_64" in pxe_config)
self.assertTrue("initramfs-4.18.13-200.fc28.x86_64.img" in pxe_config)
self.assertTrue("/live-rootfs.squashfs.img ostree=/mnt/sysimage/" in pxe_config)
def make_squashfs_test(self):
"""Test making a squashfs image"""
with tempfile.TemporaryDirectory(prefix="lorax.test.") as work_dir:
with tempfile.NamedTemporaryFile(prefix="lorax.test.disk.") as disk_img:
# Make a small ext4 disk image
mksparse(disk_img.name, 42 * 1024**2)
runcmd(["mkfs.ext4", "-L", "Anaconda", "-b", "4096", "-m", "0", disk_img.name])
opts = DataHolder(compression="xz", arch="x86_64")
make_squashfs(opts, disk_img.name, work_dir)
# Make sure it made an install.img
self.assertTrue(os.path.exists(joinpaths(work_dir, "images/install.img")))
# Make sure it looks like a squashfs filesystem
squashfs_sig = open(joinpaths(work_dir, "images/install.img"), "rb").read(4)
self.assertTrue(squashfs_sig in [b"hsqs", b"sqsh"])