deb832d685
This completes the transitions started in Ic5a61365ef0132476b11bdbf1dd96885e91c3cb6 The new file plugin.py is the place to start with this change. The abstract base classes PluginBase and NodeBase are heavily documented. NodeBase essentially replaces Digraph.Node The changes in level?/*.py make no functional changes, but are just refactoring to implement the plugin and node classes consistently. Additionally we have added asserts during parsing & generation to ensure plugins are implemented PluginBase, and get_nodes() is always returning NodeBase objects for the graph. Change-Id: Ie648e9224749491260dea65d7e8b8151a6824b9c
182 lines
6.6 KiB
Python
182 lines
6.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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import fixtures
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import logging
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import os
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import shutil
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import subprocess
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import tempfile
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import testtools
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from diskimage_builder.block_device.level0.localloop \
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import LocalLoopNode as LocalLoop
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from diskimage_builder.block_device.level1.mbr import MBR
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logger = logging.getLogger(__name__)
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class TestMBR(testtools.TestCase):
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disk_size_10M = 10 * 1024 * 1024
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disk_size_1G = 1024 * 1024 * 1024
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pargs = ["--raw", "--output",
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"NR,START,END,TYPE,FLAGS,SCHEME", "-g", "-b", "-"]
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def _get_path_for_partx(self):
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"""Searches and sets the path for partx
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Because different distributions store the partx binary
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at different places, there is the need to look for it.
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"""
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dirs = ["/bin", "/usr/bin", "/sbin", "/usr/sbin"]
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for d in dirs:
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if os.path.exists(os.path.join(d, "partx")):
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return os.path.join(d, "partx")
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return
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# If not found, try without path.
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return "partx"
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def setUp(self):
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super(TestMBR, self).setUp()
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fs = '%(asctime)s %(levelname)s [%(name)s] %(message)s'
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self.log_fixture = self.useFixture(
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fixtures.FakeLogger(level=logging.DEBUG,
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format=fs))
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def _create_image(self):
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tmp_dir = tempfile.mkdtemp(prefix="dib-bd-mbr-")
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image_path = os.path.join(tmp_dir, "image.raw")
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LocalLoop.image_create(image_path, TestMBR.disk_size_1G)
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return tmp_dir, image_path
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def _run_partx(self, image_path):
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largs = copy.copy(TestMBR.pargs)
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partx_path = self._get_path_for_partx()
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largs.insert(0, partx_path)
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largs.append(image_path)
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logger.info("Running command [%s]", largs)
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return subprocess.check_output(largs).decode("ascii")
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def test_one_ext_partition(self):
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"""Creates one partition and check correctness with partx."""
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tmp_dir, image_path = self._create_image()
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with MBR(image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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mbr.add_partition(False, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(image_path)
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shutil.rmtree(tmp_dir)
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self.assertEqual(
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"1 2048 2097151 0xf 0x0 dos\n"
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"5 4096 24575 0x83 0x0 dos\n", output)
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def test_zero_partitions(self):
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"""Creates no partition and check correctness with partx."""
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tmp_dir, image_path = self._create_image()
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with MBR(image_path, TestMBR.disk_size_1G, 1024 * 1024):
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pass
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output = self._run_partx(image_path)
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shutil.rmtree(tmp_dir)
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self.assertEqual("", output)
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def test_many_ext_partitions(self):
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"""Creates many partition and check correctness with partx."""
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tmp_dir, image_path = self._create_image()
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with MBR(image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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for nr in range(0, 64):
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mbr.add_partition(False, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(image_path)
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shutil.rmtree(tmp_dir)
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lines = output.split("\n")
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self.assertEqual(66, len(lines))
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self.assertEqual(
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"1 2048 2097151 0xf 0x0 dos", lines[0])
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start_block = 4096
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end_block = start_block + TestMBR.disk_size_10M / 512 - 1
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for nr in range(1, 65):
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fields = lines[nr].split(" ")
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self.assertEqual(6, len(fields))
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self.assertEqual(nr + 4, int(fields[0]))
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self.assertEqual(start_block, int(fields[1]))
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self.assertEqual(end_block, int(fields[2]))
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self.assertEqual("0x83", fields[3])
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self.assertEqual("0x0", fields[4])
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self.assertEqual("dos", fields[5])
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start_block += 22528
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end_block = start_block + TestMBR.disk_size_10M / 512 - 1
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def test_one_pri_partition(self):
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"""Creates one primary partition and check correctness with partx."""
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tmp_dir, image_path = self._create_image()
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with MBR(image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(image_path)
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shutil.rmtree(tmp_dir)
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self.assertEqual(
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"1 2048 22527 0x83 0x0 dos\n", output)
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def test_three_pri_partition(self):
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"""Creates three primary partition and check correctness with partx."""
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tmp_dir, image_path = self._create_image()
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with MBR(image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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for _ in range(3):
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mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(image_path)
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shutil.rmtree(tmp_dir)
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self.assertEqual(
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"1 2048 22527 0x83 0x0 dos\n"
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"2 22528 43007 0x83 0x0 dos\n"
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"3 43008 63487 0x83 0x0 dos\n", output)
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def test_many_pri_and_ext_partition(self):
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"""Creates many primary and extended partitions."""
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tmp_dir, image_path = self._create_image()
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with MBR(image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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# Create three primary partitions
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for _ in range(3):
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mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x83)
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for _ in range(7):
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mbr.add_partition(False, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(image_path)
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shutil.rmtree(tmp_dir)
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self.assertEqual(
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"1 2048 22527 0x83 0x0 dos\n" # Primary 1
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"2 22528 43007 0x83 0x0 dos\n" # Primary 2
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"3 43008 63487 0x83 0x0 dos\n" # Primary 3
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"4 63488 2097151 0xf 0x0 dos\n" # Extended
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"5 65536 86015 0x83 0x0 dos\n" # Extended Partition 1
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"6 88064 108543 0x83 0x0 dos\n" # Extended Partition 2
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"7 110592 131071 0x83 0x0 dos\n" # ...
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"8 133120 153599 0x83 0x0 dos\n"
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"9 155648 176127 0x83 0x0 dos\n"
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"10 178176 198655 0x83 0x0 dos\n"
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"11 200704 221183 0x83 0x0 dos\n", output)
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